Frontiers in Ceramic Science

Volume: 2

NiCo and NiCu Based-Materials for Hydrogen Production and Electro-oxidation Reactions

Author(s): Moises R. Cesario, Daniel A. Macedo, Glageane S. Souza, Francisco J.A. Loureiro, Haingomalala L. Tidahy, Cedric Gennequin and Edmond Abi- Aad

Pp: 129-161 (33)

DOI: 10.2174/9781681087580118020008

* (Excluding Mailing and Handling)

Abstract

Ni1-xCoxO-CGO, Ni1-xCuxO-CGO, CuOCGO and NiO-CGO composites powders were obtained by a one-step synthesis method and their catalytic activities in dry reforming of methane (CH4+CO2) for hydrogen production were evaluated. X-ray diffraction (XRD) analysis of composite powders confirmed NiO, Co3O4, CuO and Ce0.9Gd0.1O1.95 cubic phases. XRD results also showed the formation of nanocrystalline materials. Cobalt-based materials showed higher surface area values (SBET) than copper-based materials. According to temperature programmed reduction (TPR) analyses, Ni0.6Co0.4O-CGO (NiCo0.4) and Ni0.4Co0.6O-CGO (NiCo0.6) catalysts have higher reduction capacity and stronger metal/support interaction than Ni0.6Cu0.4O-CGO (NiCu0.4) and Ni0.4Cu0.6O-CGO (NiCu0.6) materials. Rietveld refinement analyses for NiCo0.4, NiCo0.6 and NiCu0.4 reduced catalysts, confirmed the presence of Ni-Co and Ni- Cu alloys. These factors are important for enhanced catalytic activity avoiding carbon deposition. NiCo0.4 and NiCo0.6 catalysts had higher conversions of CH4 and CO2 than Ni-CGO and Cu-based catalysts. NiCo-based catalyst showed a better resistance to carbon deposition. NiCo0.4 had high H2/CO ratio and the best reaction selectivity below 600 ºC. The electrocatalytic activity of NiCo0.4/CGO/NiCo0.4 screen-printed symmetrical cells from hydrogen and synthetic biogas (CH4+CO2) electro-oxidation reaction was studied by impedance spectroscopy in the temperature range between 650 and 850 ºC. The polarization resistance was influenced by the atmosphere conditions. Total polarization resistances (Rp) of 0.96 and 36.10 Ω cm2 were obtained at 750 °C for H2 and biogas atmospheres, respectively. The activation energy (Ea) was lower when H2 was used (0.92 eV). The hydrogen oxidation reaction occurs more easily than the dry reforming of methane.


Keywords: Alloy, Carbon Deposition, Dry Reforming of Methane, One Step Synthesis, Electro-Oxidation Reaction, Hydrogen, Impedance Spectroscopy Surface Area, Metal/Support Interaction, Reduction Capacity.

Related Journals
Related Books
© 2025 Bentham Science Publishers | Privacy Policy
Request history8.2.27PHP Version179msRequest Duration26MBMemory UsageGET chapter/{id}/{param?}Route
  • warninglog[10:05:25] LOG.warning: Optional parameter $id declared before required parameter $request is implic...
  • Booting (93.47ms)time
  • Application (85.58ms)time
  • 1 x Booting (52.2%)
    93.47ms
    1 x Application (47.79%)
    85.58ms
    12 templates were rendered
    • ebook.chapter_detailschapter_details.blade.php#?blade
    • layouts.chapter_header_sectionchapter_header_section.blade.php#?blade
    • ebook.chapter_top_bannerchapter_top_banner.blade.php#?blade
    • ebook.chapter_bottom_bannerchapter_bottom_banner.blade.php#?blade
    • ebook.ebook_right_bannerebook_right_banner.blade.php#?blade
    • includes.inc_related_journalsinc_related_journals.blade.php#?blade
    • includes.inc_related_ebooksinc_related_ebooks.blade.php#?blade
    • layouts.appapp.blade.php#?blade
    • layouts._login_access_login_access.blade.php#?blade
    • layouts._header_header.blade.php#?blade
    • layouts._main_menu_main_menu.blade.php#?blade
    • layouts._footer_menu_footer_menu.blade.php#?blade
    uri
    GET chapter/{id}/{param?}
    middleware
    web, check_user_access
    controller
    App\Http\Controllers\ChapterController@GetChapterDetails
    namespace
    App\Http\Controllers
    where
    as
    chapter
    file
    app/Http/Controllers/ChapterController.php:1350-1704
    19 statements were executed23.91ms
    • Connection Establishedalphaeurekaselec_live_10_06_2022UserAccessCheck.php#24
      Backtrace
      • 9. middleware::check_user_access:24
      • 10. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 11. vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
      • 12. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 13. vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php:88
    • INSERT INTO visitor_ip_address (ip_address,visitor_agent,visitor_count, created_on,updated_on) VALUES ('59769557','',1,1739959525,1739959525) ON DUPLICATE KEY UPDATE visitor_count=visitor_count + 1, updated_on=1739959525
      850μsalphaeurekaselec_live_10_06_2022UserAccessCheck.php#24
      Backtrace
      • 11. middleware::check_user_access:24
      • 12. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 13. vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
      • 14. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 15. vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php:88
    • INSERT INTO visitor_ip_address_detail (ip_address,visitor_url,visitor_count, created_on,updated_on) VALUES ('59769557','/chapter/12757',1,1739959525,1739959525)
      190μsalphaeurekaselec_live_10_06_2022UserAccessCheck.php#27
      Backtrace
      • 11. middleware::check_user_access:27
      • 12. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 13. vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
      • 14. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 15. vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php:88
    • (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_journal_volume_trail WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_journal_volume_corporate WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_journal_volume_token WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_ebook_volume_trail WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_ebook_volume_corporate WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_ebook_volume_token WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_issue_trail WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_issue_corporate WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_issue_token WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_article_trail WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_article_corporate WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_article_token WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_chapter_trail WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_chapter_corporate WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_chapter_token WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) union (select `user_id`, `to_ip`, `from_ip` from (select user_id, to_ip, from_ip FROM user_access_disease_corporate WHERE to_ip >= 59769557 ORDER BY to_ip ASC LIMIT 1) as `tjv` where `from_ip` <= 59769557) limit 1
      12.18msalphaeurekaselec_live_10_06_2022UserAccess.php#784
      Bindings
      • 0: 59769557
      • 1: 59769557
      • 2: 59769557
      • 3: 59769557
      • 4: 59769557
      • 5: 59769557
      • 6: 59769557
      • 7: 59769557
      • 8: 59769557
      • 9: 59769557
      • 10: 59769557
      • 11: 59769557
      • 12: 59769557
      • 13: 59769557
      • 14: 59769557
      • 15: 59769557
      Backtrace
      • 14. app/Models/UserAccess/UserAccess.php:784
      • 15. middleware::check_user_access:114
      • 16. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Middleware/SubstituteBindings.php:50
      • 18. vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:183
    • select * from `chapter` where `chapter_id` = '12757' limit 1
      340μsalphaeurekaselec_live_10_06_2022ChapterController.php#1406
      Bindings
      • 0: 12757
      Backtrace
      • 16. app/Http/Controllers/ChapterController.php:1406
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 18. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 19. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
      • 20. vendor/laravel/framework/src/Illuminate/Routing/Route.php:206
    • select CONCAT_WS(' ',au.first_name, ' ', ifnull(au.initials,''), ' ', au.last_name) as authors, CONCAT(au.last_name, IFNULL(CONCAT(' ', au.initials), ''), ' ', au.first_name) AS authorsRIS, CONCAT_WS(' ',au.last_name, ' ', ifnull(au.initials,''), ' ', au.first_name) as authorsCiteAs, CONCAT_WS(' ',au.first_name, IFNULL(CONCAT(' ', au.initials), ''), IFNULL(CONCAT(' ', au.last_name), '')) as authorsmodal , `au`.*, `af`.`ror_id`, `af`.`institution`, `af`.`department`, `af`.`country`, `af`.`city`, `af`.`address`, (GROUP_CONCAT(TRIM(BOTH ', ' FROM CONCAT(ifnull(concat(af.institution,','),''), ifnull(concat(af.department,','),''), ifnull(concat(af.address,','),''), ifnull(concat(af.city,','),''), ifnull(concat(af.country,','),''), ifnull(concat(af.postal_code,','),''), ifnull(concat(af.phone,','),''), ifnull(concat(af.fax,','),''))) SEPARATOR '|')) as `author_affiliation`, (GROUP_CONCAT(TRIM(BOTH ', ' FROM CONCAT(ifnull(concat(af.web_view,','),''))) SEPARATOR '|')) as `web_view` from `author` as `au` left join `author_affiliation` as `af` on `au`.`author_id` = `af`.`author_id` where `au`.`chapter_id` = '12757' group by `au`.`author_id` order by `au`.`article_id` asc, `au`.`sequence` asc
      2.21msalphaeurekaselec_live_10_06_2022Author.php#86
      Bindings
      • 0: 12757
      Backtrace
      • 13. app/Models/Author.php:86
      • 14. app/Http/Controllers/ChapterController.php:1411
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select * from `keywords` where `chapter_id` = '12757'
      1.21msalphaeurekaselec_live_10_06_2022ChapterController.php#1415
      Bindings
      • 0: 12757
      Backtrace
      • 15. app/Http/Controllers/ChapterController.php:1415
      • 16. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 17. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
      • 19. vendor/laravel/framework/src/Illuminate/Routing/Route.php:206
    • select * from `ebook` where `ebook_id` = 637 limit 1
      210μsalphaeurekaselec_live_10_06_2022ChapterController.php#1430
      Bindings
      • 0: 637
      Backtrace
      • 16. app/Http/Controllers/ChapterController.php:1430
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 18. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 19. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
      • 20. vendor/laravel/framework/src/Illuminate/Routing/Route.php:206
    • select count(*) as aggregate from `subject_ebook` as `se` inner join `ebook` as `e` on `e`.`ebook_id` = `se`.`ebook_id` inner join `ebook_volume` as `v` on `v`.`ebook_id` = `e`.`ebook_id` where subject_id IN (select subject_id FROM subject_ebook WHERE ebook_id=637) and se.ebook_id!=637 and v.ebook_status='1'
      920μsalphaeurekaselec_live_10_06_2022Subject.php#238
      Backtrace
      • 16. app/Models/Subject.php:238
      • 17. app/Http/Controllers/ChapterController.php:1434
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 19. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 20. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select distinct v.nid as volume_id,e.nid,e.title,v.issn,v.eissn,v.isbn,v.eisbn,e.ebook_id, v.image_file_name,v.file_path,v.flyer_link,v.ebook_volume_id, v.volume_name,v.doi,v.year_id,v.introduction from `subject_ebook` as `se` inner join `ebook` as `e` on `e`.`ebook_id` = `se`.`ebook_id` inner join `ebook_volume` as `v` on `v`.`ebook_id` = `e`.`ebook_id` where subject_id IN (select subject_id FROM subject_ebook WHERE ebook_id=637) and se.ebook_id!=637 and v.ebook_status='1' limit 10 offset 0
      690μsalphaeurekaselec_live_10_06_2022Subject.php#238
      Backtrace
      • 14. app/Models/Subject.php:238
      • 15. app/Http/Controllers/ChapterController.php:1434
      • 16. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 17. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select count(*) as aggregate from `subject_journal` as `sj` inner join `journal` as `j` on `j`.`journal_id` = `sj`.`journal_id` where subject_id IN (select subject_id FROM subject_ebook WHERE ebook_id=637)
      320μsalphaeurekaselec_live_10_06_2022Subject.php#255
      Backtrace
      • 16. app/Models/Subject.php:255
      • 17. app/Http/Controllers/ChapterController.php:1435
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 19. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 20. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select distinct j.nid as journal_nid,j.title,j.subtitle,j.issn,j.eissn,j.keyword,sj.journal_id,j.image_file_name,j.flyer_link from `subject_journal` as `sj` inner join `journal` as `j` on `j`.`journal_id` = `sj`.`journal_id` where subject_id IN (select subject_id FROM subject_ebook WHERE ebook_id=637) limit 10 offset 0
      380μsalphaeurekaselec_live_10_06_2022Subject.php#255
      Backtrace
      • 14. app/Models/Subject.php:255
      • 15. app/Http/Controllers/ChapterController.php:1435
      • 16. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 17. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select `e`.*, `a`.*, `y`.`year`, `e`.`ebook_volume_id` as `ebook_volume_id`, `a`.`ebook_volume_id` as `ebk_vol_id`, `e`.`ebook_id` as `ebk_ebook_id` from `ebook_volume` as `e` left join `author` as `a` on `e`.`ebook_volume_id` = `a`.`ebook_volume_id` left join `year` as `y` on `y`.`id` = `e`.`year_id` where `e`.`ebook_volume_id` = 2630 and `e`.`is_uploaded` = 1
      1.24msalphaeurekaselec_live_10_06_2022EbookVolume.php#271
      Bindings
      • 0: 2630
      • 1: 1
      Backtrace
      • 13. app/Models/EbookVolume.php:271
      • 14. app/Http/Controllers/ChapterController.php:1438
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select count(*) rcd from `ebook_volume` where `ebook_id` = 637 and ebook_volume_id <> 2630 limit 1
      260μsalphaeurekaselec_live_10_06_2022EbookVolume.php#999
      Bindings
      • 0: 637
      Backtrace
      • 14. app/Models/EbookVolume.php:999
      • 15. app/Http/Controllers/ChapterController.php:1462
      • 16. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 17. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 18. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select count(*) as total_count, content_type_access_id as access_type from ebook_access where content_type_id = '12757' and content_type = 'c' and ( (from_date <= CURDATE() and to_date >= CURDATE() and perpetual= 0) or (from_date is null and to_date is null and perpetual= 1) )
      280μsalphaeurekaselec_live_10_06_2022ContentAccess.php#647
      Backtrace
      • 11. app/Models/ContentAccess.php:647
      • 12. app/Http/Controllers/ChapterController.php:1465
      • 13. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 14. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select count(*) as total_count, content_type_access_id as access_type from ebook_access where content_type_id = '2630' and content_type = 'v' and ( (from_date <= CURDATE() and to_date >= CURDATE() and perpetual= 0) or (from_date is null and to_date is null and perpetual= 1) )
      250μsalphaeurekaselec_live_10_06_2022ContentAccess.php#647
      Backtrace
      • 11. app/Models/ContentAccess.php:647
      • 12. app/Http/Controllers/ChapterController.php:1478
      • 13. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 14. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Trial Access" as access_base_text, CASE j.type WHEN 111 THEN true ELSE false END as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"ebook_volume" as access_level,"" as chapter_id from `user_access_ebook_volume_trail` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59769557 and j.to_ip >=59769557 )) and ((j.from_date <= 1739959525 and j.to_date >= 1739959525 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.volume_id = 2630) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Subscribed" as access_base_text, false as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"ebook_volume" as access_level,"" as chapter_id from `user_access_ebook_volume_corporate` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59769557 and j.to_ip >=59769557 )) and ((j.from_date <= 1739959525 and j.to_date >= 1739959525 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.volume_id = 2630) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Token Based Access" as access_base_text, false as terms_popup, "R" as content_download_type, j.uc_id as restricted_user_access_key, "v" as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"ebook_volume" as access_level,"" as chapter_id from `user_access_ebook_volume_token` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59769557 and j.to_ip >=59769557 )) and ((j.from_date <= 1739959525 and j.to_date >= 1739959525 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.volume_id = 2630)
      590μsalphaeurekaselec_live_10_06_2022UserAccess.php#1266
      Backtrace
      • 13. app/Models/UserAccess/UserAccess.php:1266
      • 14. app/Http/Controllers/ChapterController.php:1518
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Trial Access" as access_base_text, CASE j.type WHEN 111 THEN true ELSE false END as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_trail` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59769557 and j.to_ip >=59769557 )) and ((j.from_date <= 1739959525 and j.to_date >= 1739959525 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 12757) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Subscribed" as access_base_text, false as terms_popup, "S" as content_download_type, null as restricted_user_access_key, null as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_corporate` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59769557 and j.to_ip >=59769557 )) and ((j.from_date <= 1739959525 and j.to_date >= 1739959525 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 12757) union (select j.user_access_id,j.volume_id,j.user_id,j.from_ip,j.to_ip,j.type,j.track,"Token Based Access" as access_base_text, false as terms_popup, "R" as content_download_type, j.uc_id as restricted_user_access_key, "v" as restricted_user_access_type, CASE j.track WHEN 0 THEN false ELSE true END as tracksAccessByVolume,"chapter" as access_level, j.chapter_id from `user_access_chapter_token` as `j` inner join `user_access_info` as `info` on `j`.`user_access_id` = `info`.`user_access_id` where ((j.from_ip <= 59769557 and j.to_ip >=59769557 )) and ((j.from_date <= 1739959525 and j.to_date >= 1739959525 and j.perpetual= 0) or (j.from_date is null and j.to_date is null and j.perpetual= 1)) and j.chapter_id = 12757)
      560μsalphaeurekaselec_live_10_06_2022UserAccess.php#1266
      Backtrace
      • 13. app/Models/UserAccess/UserAccess.php:1266
      • 14. app/Http/Controllers/ChapterController.php:1549
      • 15. vendor/laravel/framework/src/Illuminate/Routing/Controller.php:54
      • 16. vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:43
      • 17. vendor/laravel/framework/src/Illuminate/Routing/Route.php:260
    • select b.banner_link, b.banner_name, b.banner_script, b.banner_remarks, b.banner_file_name, b.banner_placement, bd.content_type, bd.content_id from `tbl_banner` as `b` inner join `tbl_banner_detail` as `bd` on `bd`.`banner_id` = `b`.`banner_id` inner join `users` as `u` on `u`.`id` = `b`.`updated_by` where `b`.`banner_ebook` = 1 and `bd`.`content_type` = 'B' and `bd`.`content_id` = 2630 and `b`.`banner_from_date` <= 1739959525 and `b`.`banner_to_date` >= 1739959525 and `b`.`banner_status` = 'A' order by `b`.`banner_id` desc
      1.02msalphaeurekaselec_live_10_06_2022Banner.php#95
      Bindings
      • 0: 1
      • 1: B
      • 2: 2630
      • 3: 1739959525
      • 4: 1739959525
      • 5: A
      Backtrace
      • 13. app/Models/Banner.php:95
      • 14. app/Http/helpers.php:404
      • 17. vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:124
      • 18. vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58
      • 19. vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:73
    • select count(*) as aggregate from `uc_cart_products` where cart_id='18ecaf7de87720ae8570d0139ceb0a25'
      210μsalphaeurekaselec_live_10_06_2022Cart.php#271
      Backtrace
      • 15. app/Models/Cart.php:271
      • 16. view::layouts._header:260
      • 18. vendor/laravel/framework/src/Illuminate/Filesystem/Filesystem.php:124
      • 19. vendor/laravel/framework/src/Illuminate/View/Engines/PhpEngine.php:58
      • 20. vendor/laravel/framework/src/Illuminate/View/Engines/CompilerEngine.php:73
    App\Models\Keywords
    9Keywords.php#?
    App\Models\Chapter
    1Chapter.php#?
    App\Models\Ebook
    1Ebook.php#?
        _token
        B6xweCaapW7Z0bU0JCDwwzqHMjIrYLNkLNQ5Bs4s
        uc_cart_id
        18ecaf7de87720ae8570d0139ceb0a25
        _previous
        array:1 [ "url" => "https://alpha.eurekaselect.com/chapter/12757" ]
        _flash
        array:2 [ "old" => [] "new" => [] ]
        PHPDEBUGBAR_STACK_DATA
        []
        path_info
        /chapter/12757
        status_code
        200
        
        status_text
        OK
        format
        html
        content_type
        text/html; charset=UTF-8
        request_query
        []
        
        request_request
        []
        
        request_headers
        0 of 0
        array:17 [ "x-https" => array:1 [ 0 => "1" ] "host" => array:1 [ 0 => "alpha.eurekaselect.com" ] "priority" => array:1 [ 0 => "u=0, i" ] "cookie" => array:1 [ 0 => "wayfindertarget=eyJpdiI6InZ2N1FiUldicTJ2VDJVNmRpRi96MEE9PSIsInZhbHVlIjoiS1ZWcFJpWlkzWkYzQTdrenFqRWNmUU51YjZFdjFMYWM2VnhMZ1dNRmhVST0iLCJtYWMiOiJjYWM4YmI2NzE0Y2ZmNzk4Yjk5MTBjZTFkNGNlNDUwNGVmOWMwZmRmNzY3ZDA0NTZiY2RhYTZhNTU1ODdjZjA0IiwidGFnIjoiIn0%3Dwayfindertarget=eyJpdiI6InZ2N1FiUldicTJ2VDJVNmRpRi96MEE9PSIsInZhbHVlIjoiS1ZWcFJpWlkzWkYzQTdrenFqRWNmUU51YjZFdjFMYWM2VnhMZ1dNRmhVST0iLCJtYWMiOiJjYWM4YmI2NzE0Y2Zm" ] "accept-encoding" => array:1 [ 0 => "gzip, deflate, br, zstd" ] "sec-fetch-dest" => array:1 [ 0 => "document" ] "sec-fetch-user" => array:1 [ 0 => "?1" ] "sec-fetch-mode" => array:1 [ 0 => "navigate" ] "sec-fetch-site" => array:1 [ 0 => "none" ] "accept" => array:1 [ 0 => "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7" ] "user-agent" => array:1 [ 0 => "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)" ] "upgrade-insecure-requests" => array:1 [ 0 => "1" ] "sec-ch-ua-platform" => array:1 [ 0 => ""Windows"" ] "sec-ch-ua-mobile" => array:1 [ 0 => "?0" ] "sec-ch-ua" => array:1 [ 0 => ""HeadlessChrome";v="129", "Not=A?Brand";v="8", "Chromium";v="129"" ] "cache-control" => array:1 [ 0 => "no-cache" ] "pragma" => array:1 [ 0 => "no-cache" ] ]
        request_cookies
        0 of 0
        array:1 [ "wayfindertarget" => null ]
        response_headers
        0 of 0
        array:5 [ "content-type" => array:1 [ 0 => "text/html; charset=UTF-8" ] "cache-control" => array:1 [ 0 => "no-cache, private" ] "date" => array:1 [ 0 => "Wed, 19 Feb 2025 10:05:25 GMT" ] "set-cookie" => array:2 [ 0 => "XSRF-TOKEN=eyJpdiI6InZVN3lCVDk0ZTFLaHdIVUJab1A2dkE9PSIsInZhbHVlIjoiZ2FsK1pvVDJvcWNqNmFPRkNYdFRXaks4L1BuaXYxSG1sMUJrMmJkaERoN2dUcnlBRlh5RWR0aVBzWWltV1VUM1FXQ0hyenY4a2VWRTJYTi9DeHlrK3RYQ0VrUVBoL3BQSS9wM0NkbDFHeXA2a2RucHJXTE1uTEgxbC9MWkxLZnciLCJtYWMiOiJmZTgwMmU3NzNiMGI4YTIxYTczNzYxZjcyY2FmNGIyMGQyNjhhZGM5ZmNkMTBhZGQ3NzY3OWYyNzE2MDcxNGYxIiwidGFnIjoiIn0%3D; expires=Fri, 21 Feb 2025 22:05:25 GMT; Max-Age=216000; path=/; secure; samesite=laxXSRF-TOKEN=eyJpdiI6InZVN3lCVDk0ZTFLaHdIVUJab1A2dkE9PSIsInZhbHVlIjoiZ2FsK1pvVDJvcWNqNmFPRkNYdFRXaks4L1BuaXYxSG1sMUJrMmJkaERoN2dUcnlBRlh5RWR0aVBzWWltV1VUM1FXQ0hye" 1 => "alphaeurekaselectnet_session=eyJpdiI6IlUweHNLcU1xWnJRaUkxUEVIR0ExTkE9PSIsInZhbHVlIjoiUnk4T2RZT1haSlp3M2NqSWlwbzZNY0FhTXhBZUE2anRSc2hyb2JEVHoyNFAwOE1EMkx6ZGcvNDJtWWk0MWthODhzVlJ4VnpNbFB5QTZvb2QvQlByM2VSbVY2UUFlWlErcHQ0eEtMMjZTTDdyQW9tZHhTU1IrZjB3T1lXa0FTYnEiLCJtYWMiOiJlZDk3NDczYzVhMjZlM2QzMzhjZTM1Mzg2Yjk0MWU4MzIyMDBkYzY2YTEyZWUwNDU5N2E4YTQyMTkzMzYzODYyIiwidGFnIjoiIn0%3D; path=/; secure; httponly; samesite=laxalphaeurekaselectnet_session=eyJpdiI6IlUweHNLcU1xWnJRaUkxUEVIR0ExTkE9PSIsInZhbHVlIjoiUnk4T2RZT1haSlp3M2NqSWlwbzZNY0FhTXhBZUE2anRSc2hyb2JEVHoyNFAwOE1EMkx6ZGcvNDJ" ] "Set-Cookie" => array:2 [ 0 => "XSRF-TOKEN=eyJpdiI6InZVN3lCVDk0ZTFLaHdIVUJab1A2dkE9PSIsInZhbHVlIjoiZ2FsK1pvVDJvcWNqNmFPRkNYdFRXaks4L1BuaXYxSG1sMUJrMmJkaERoN2dUcnlBRlh5RWR0aVBzWWltV1VUM1FXQ0hyenY4a2VWRTJYTi9DeHlrK3RYQ0VrUVBoL3BQSS9wM0NkbDFHeXA2a2RucHJXTE1uTEgxbC9MWkxLZnciLCJtYWMiOiJmZTgwMmU3NzNiMGI4YTIxYTczNzYxZjcyY2FmNGIyMGQyNjhhZGM5ZmNkMTBhZGQ3NzY3OWYyNzE2MDcxNGYxIiwidGFnIjoiIn0%3D; expires=Fri, 21-Feb-2025 22:05:25 GMT; path=/; secureXSRF-TOKEN=eyJpdiI6InZVN3lCVDk0ZTFLaHdIVUJab1A2dkE9PSIsInZhbHVlIjoiZ2FsK1pvVDJvcWNqNmFPRkNYdFRXaks4L1BuaXYxSG1sMUJrMmJkaERoN2dUcnlBRlh5RWR0aVBzWWltV1VUM1FXQ0hye" 1 => "alphaeurekaselectnet_session=eyJpdiI6IlUweHNLcU1xWnJRaUkxUEVIR0ExTkE9PSIsInZhbHVlIjoiUnk4T2RZT1haSlp3M2NqSWlwbzZNY0FhTXhBZUE2anRSc2hyb2JEVHoyNFAwOE1EMkx6ZGcvNDJtWWk0MWthODhzVlJ4VnpNbFB5QTZvb2QvQlByM2VSbVY2UUFlWlErcHQ0eEtMMjZTTDdyQW9tZHhTU1IrZjB3T1lXa0FTYnEiLCJtYWMiOiJlZDk3NDczYzVhMjZlM2QzMzhjZTM1Mzg2Yjk0MWU4MzIyMDBkYzY2YTEyZWUwNDU5N2E4YTQyMTkzMzYzODYyIiwidGFnIjoiIn0%3D; path=/; secure; httponlyalphaeurekaselectnet_session=eyJpdiI6IlUweHNLcU1xWnJRaUkxUEVIR0ExTkE9PSIsInZhbHVlIjoiUnk4T2RZT1haSlp3M2NqSWlwbzZNY0FhTXhBZUE2anRSc2hyb2JEVHoyNFAwOE1EMkx6ZGcvNDJ" ] ]
        session_attributes
        0 of 0
        array:5 [ "_token" => "B6xweCaapW7Z0bU0JCDwwzqHMjIrYLNkLNQ5Bs4s" "uc_cart_id" => "18ecaf7de87720ae8570d0139ceb0a25" "_previous" => array:1 [ "url" => "https://alpha.eurekaselect.com/chapter/12757" ] "_flash" => array:2 [ "old" => [] "new" => [] ] "PHPDEBUGBAR_STACK_DATA" => [] ]
        ClearShow all
        Date ↕MethodURLData
        #12025-02-19 10:05:25GET/chapter/127571121911