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Preparation and Characterization of Acid and Alkaline Treated Kaolin Clay

*Sachin Kumar  -  Department of Chemical Engineering,, India
Achyut Kumar Panda  -  Department of Chemistry, School of Engineering and Technology, Bhubaneswar Campus, Centurion University of Technology and Management- 752050,, India
R. K. Singh  -  Department of Chemical Engineering , India

Citation Format:
bcrec 4530

Kaolin was refluxed with HNO3, HCl, H3PO4, CH3COOH, and NaOH of 3M concentration at 110 °C for 4 hours followed by calcination at 550 °C for 2 hours. The physico-chemical characteristics of resulted leached kaolinite clay were studied by XRF, XRD, FTIR, TGA, DTA, SEM and N2 adsorption techniques. XRF and FTIR study indicate that acid treatment under reflux conditions lead to the removal of the octahedral Al3+ cations along with other impurities. XRD of acid treated clay shows that, the peak intensity was found to decrease. Extent of leaching of Al3+ ions is different for different acid/base treatment. The acid treatment increased the Si/Al ratio, surface area and pore volume of the clay. Thus, the treated kaolin clay can be used as promising adsorbent and catalyst supports. © 2013 BCREC UNDIP. All rights reserved

Received: 1st March 2013; Revised: 9th April 2013; Accepted: 19th April 2013

[How to Cite: Kumar, S., Panda, A. K., Singh, R.K. (2013). Preparation and Characterization of Acids and Alkali Treated Kaolin Clay. Bulletin of Chemical Reaction Engineering & Catalysis, 8 (1): 61-69. (doi:10.9767/bcrec.8.1.4530.61-69)]


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Keywords: Kaolin; acid/base treatment; physico-chemical characteristics; adsorbent; catalyst

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  1. . Hussin, F. Aroua, M. K. Daud, W. M. A. W. (2011). Textural characteristics, surface chemistry and activation of bleaching earth: A review, Chemical Engineering Journal, 170:90–106
  2. . Heller-Kallai, L. (2006). Developments in clay science: handbook of clay science, in: L. Heller-Kallai (Ed.), Thermally Modified Clay Minerals, Elsevier, Oxford
  3. . Onal, M. Sarikaya, Y. (2007). Preparation and characterization of acid-activated bentonite powders, Powder Technology, 172:14–18
  4. . Sarikaya, Y. Onal, M. Baran, B. Alemdaroglu, T. (2000). The effect of thermal treatment on some of the physicochemical properties of a bentonite, Clays and Clay Minerals, 48:557–562
  5. . Korichi, S. Elias, A. Mefti, A. (2009). Characterization of smectite after acid activation with microwave irradiation, Applied Clay Science, 42:432–438
  6. . Clark, D. E. Folz, D. C. West, J. K. (2000). Processing materials with microwave energy, Material Science and Engineering, 287:153–158
  7. . Foletto, E. L. Volzone, C. Porto, L. M. (2006). Clarification of cottonseed oil: how structural properties of treated bentonites by acid affect bleaching efficiency, Latin America Applied Research, 36:37–40
  8. . Wu, Z. Li, C. (2009). Kinetics and thermodynamics of carotene and chlorophyll adsorption onto acid-activated bentonite from Xinjiang in xylene solution, Journal of Hazardous Materials,171:582–587
  9. . Ravichandran, J. Sivasankar, B. (1997). Properties and catalytic activity of acid modified montmorillonite and vermiculite, Clays and Clay Minerals, 45:854–858
  10. . Chmielarz, L. Kowalczyk, A. Michalik, M. Dudek, B. Piwowarska, Z. Matusiewicz, A. (2010). Acid-activated vermiculites and phlogophites as catalysts for the DeNOx process, Applied Clay Science, 49:156–162
  11. . Lenarda, M. Storaro, L. Talona, A. Moretti, E. Riello, P. (2007). Solid acid catalysts from clays: preparation of mesoporous catalysts by chemical activation of metakaolin under acid conditions, Journal of Colloid and Interfacial Science, 311:537–543
  12. . Panda, A. K. Mishra, B. G. Mishra, D. K. Singh, R. K. (2010). Effect of sulphuric acid treatment on the physico-chemical characteristics of kaolin clay, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 363:98-104
  13. . Belver, C. Munoz, M. A. B. Vicente, M. A. (2002). Chemical activation of a kaolinite under acid and alkaline conditions, Chemistry of Materials, 14:2033–2043
  14. . Chitnis, S. R. Sharma, M. M. (1997). Industrial applications of acid-treated clays as catalysts, Reactive and Functional Polymers, 32:93–115
  15. . Srasra, E. Trabelsi-Ayedi, M. (2000). Textural properties of acid activated glauconite, Applied Clay Science, 17:71–84
  16. . Siddiqui, M. K. H. (1968). Bleaching Earths, 1st ed., Pergamon Press, London
  17. . Gunawan, N. S. Indraswati, N. Ju, Y. H. Soetaredjo, F. E. Ayucitra, A. Ismadji, S. (2010). Bentonites modified with anionic and cationic surfactants for bleaching of crude palm oil, Applied Clay Science, 47:462–464
  18. . Caglayan, M. O. Kafa, S. Yigit, N. (2005). Al-pillared clay for cottonseed oil bleaching: an optimization study, Journal of Americal Oil Chemists’ Society, 82:599–602
  19. . Gil, A. Montes, M. (1994). Effect of thermal treatment on microporous accessibility in aluminium pillared clays, Journal of Materiels Chemistry, 4:1491–1496
  20. . Delhez, R. Keijser, T. H. Mittemeijer, E. J. Fresenius, Z. (1982). Determination of crystallite size and lattice distortions through X-ray diffraction line profile analysis. Analytical Chemistry, 312:1–10
  21. . Dudkin, B. N. Loukhina, I. V. Avvakumov, E. G. Isupov, V. P. (2004). Application of mechnochemical treatment of disintegration of kaolinite with sulphuric acid, Chemical and Sustainable Development, 12:327–330
  22. . Suquet, H. (1989). Effects of dry grinding and leaching on the crystal structure of chrysotile, Clays and Clay Minerals, 37:439–445
  23. . Thorills, C. L. Hickey, J. Stecker, G. (1950). Chemistry of clay racking catalysts, Journal of Industrial and Engineering Chemistry, 42:866–871
  24. . Jozefaciuk, G. Sarzynska, D. M. (2006). Effect of acid treatment and alkali treatment on nanopore properties of selected minerals, Clays and Clay Minerals, 54(2):220-229

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