Abstract
Aims and Objective: This paper aims to reveal the useful industrial aspects of kandite and montmorillonite group of clays using as a catalyst after acid activation. A comparative study of modified characteristics of clay samples has been explored based on industrial requirements.
Materials and Methods: In this study sodium bentonite and kaolin clay have been focused. The modified characteristics of clay samples are investigated by characterization methods of FT-IR, XRD, SEM/EDAX, TGA and DSC before and after treated with 4M of Hydrochloric acid. Clay samples were refluxed at 105ºC and calcined at 500ºC consecutively for 3 hours at room temperature.
Results: Maximum crystalline size 104.02 nm has been evaluated for acid-activated sodium bentonite. Alkyl halides compounds have a strong band position for all samples and have more extent on acid activation. The small numbers of manganese particles have been noticed in the acidactivated samples. 14% of decrement and 61.02% of increment of aluminates have been found respectively for acid-activated kaolin and acid-activated sodium bentonite.
Conclusion: The novelty of this study is about sodium bentonite characterization and the results show the prominent behaviour with structural, elemental, morphological, and thermal analysis. Acid-activated kaolin sample has less effect in comparison with acid-activated sodium bentonite. As the removal of the hydroxyl group of compounds has been reported through FT-IR and XRD analysis also some other industries like ceramic and paper industries may have accepted these types of modified minerals for special production with a simple process.
Keywords: Kaolin clay, sodium bentonite clay, acid-activation, physicochemical properties, thermal analysis, characterization.
[http://dx.doi.org/10.1097/00010694-195106000-00005]
[http://dx.doi.org/10.1002/jctb.5010041206]
[http://dx.doi.org/10.1097/00010694-194610000-00006]
[http://dx.doi.org/10.1016/j.matpr.2019.10.037]
[http://dx.doi.org/10.1023/A:1012244924490]
[http://dx.doi.org/10.1016/j.jcis.2005.07.033] [PMID: 16111689]
[http://dx.doi.org/10.1016/S1387-1811(98)00015-8]
[http://dx.doi.org/10.1016/j.colsurfa.2010.04.022]
[http://dx.doi.org/10.1007/s11746-005-1115-0]
[http://dx.doi.org/10.1039/jm9940401491]
[http://dx.doi.org/10.1007/978-981-32-9228-4_18]
[http://dx.doi.org/10.1016/j.scitotenv.2019.134532] [PMID: 31785902]