You are here

Home » Content

Structural Property Improvements of Bentonite with Sulfuric Acid Activation

Journal Name:

  • Journal of The Turkish Chemical Society, Section B: Chemical Engineering

Publication Year:

  • 2017

Key Words:

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
The acid activation of bentonite from Middle Anatolia, consisting of mostly montmorillonite, with a hot solution of H2SO4 with different concentrations was carried out. SEM images, nitrogen sorption isotherms and FTIR spectra were used to examine the structural changes of the bentonite with acid activation. Acid-base titration method was applied to determine the surface acidities. The characterization results indicated that the acid activation caused considerable increases in the surface area and pore volumes by changing both the morphology and surface properties. The increase of the acid strength resulted in enhancement both in the surface area and acid sites up to 2 M concentration. For both Lewis and Brønsted acidities, significant increases occurred in addition to H-bonding to the structure.
Bookmark/Search this post with
FULL TEXT (PDF): 
PDF icon arastirmax-structural-property-improvements-bentonite-sulfuric-acid-activation.pdf
  • 2
201
212
  • English

REFERENCES

References: 

1. Velde, B. Introduction to clay minerals. Chapman Hall 1992; 42-61.
2. Velde B. Origin and mineralogy of clays: clays and the environment. Springer 1995 p.8.
3. Adams, J.M., McCabe, R.W. Clay minerals as catalyst in F. Bergaya, G. Lagaly (Eds.) Development in clay science: Handbook of clay science. 2013; vol. 5, 491–538.
4. Al-Zahrani, A.A., Al-Shahrani, S.S, Al-Tawil, Y.A. Study on the activation of Saudi natural bentonite, Part II: Characterization of the produced active clay and its test as an adsorbing agent. J. King Saud Univ., Eng. Sci. 2000; 13 (2): 193–203
5. Tjong, S.C. Synthesis and structure-property characteristics of clay-polymer nanocomposites in Tjong, S.C. (Ed.) Nanocrystalline materials. 2006; 311-348.
6. Nguyen, Q.T., Baird, D.G. Preparation of polymer–clay nanocomposites and their properties. Adv. Polym. Tech. 2006; 25 (4): 270-285.
Balcı S. JOTCSA. 2018; 1(2); 201-212. RESEARCH ARTICLE
211
7. Vicente, M.A., Gil, A., Bergaya, F. Pillared clays and clay minerals in F. Bergaya, G. Lagaly (Eds.) Development in clay science: Handbook of clay science 2013; vol. 5, 527-557.
8. Brezovska, S., Marina, B., Burevski, D., Angusheva, B., Boseska, V., Stojanovska, L. Adsorption properties and porous structure of sulfuric acid treated bentonites determined by the adsorption isotherm of benzene vapor. J. Serb. Chem. Soc. 2005; 70 (1): 33−40.
9. Zhansheng, W.U., Chun, L.I., Xifang, S., Xiaolin, X., Bin, D., Jine, L., Hongsheng, Z. Characterization, acid activation and bleaching performance of bentonite from Xinjiang. Chinese J. Chem. Eng. 2006; 14 (2): 253-258.
10. Noyan, H., Önal, M., Sarıkaya, Y. The effect of sulphuric acid activation on the crystallinity, surface area, porosity, surface acidity, and bleaching power of a bentonite. Food Chem. 2007; 105 (1): 156-163.
11. Önal, M., Sarıkaya, Y. Preparation and characterization of acid-activated bentonite powders. Powder Technol. 2007; 172 (1): 14-18.
12. Didi, M.A., Makhoukhi, B., Azzouz, A., Villemin, D. Colza oil bleaching through optimized acid activation of bentonite; A comparative study. Appl. Clay Sci. 2009; 42: 336–344.
13. Bieseki, L., Treichel, H., Araujo, A.S., Castellã Pergher, S.B. Porous materials obtained by acid treatment processing followed by pillaring of montmorillonite clays. Appl. Clay Sci. 2013; 85: 46-52.
14. Komadel. P., Madejová, J. Acid activation of clay minerals in F. Bergaya, G. Lagaly (Eds.) Development in clay science: Handbook of clay science. 2013; vol. 5, 385-409.
15. Al-Shahrani, S.S. Treatment of wastewater contaminated with cobalt using Saudi activated bentonite. Alexandria Eng. J. 2014; 53 (1): 205-211.
16. Bendou, S., Amrani, M. Effect of Hydrochloric Acid on the Structural of Sodic-Bentonite Clay. J. Miner. Mater. Charac. Eng. 2014; 2: 404-413.
17. Pеtrоvić, Z., Dugić, P. Аlеksić, V., Bеgić, S., Sаdаdinоvić, J, Мićić, V., Kljajić, N. Composition, structure and textural characteristics of domestic acid activated bentonite. Contemp. Mater. 2014; 1: 133-139.
18. Madejová, J., Pálková, H., Jankovič, L. Near-infrared study of the interaction of pyridine with acid-treated montmorillonite. Vib. Spectrosc. 2015; 76: 22-30.
19. Komadel, P. Acid activated clays: Materials in continuous demand. Appl. Clay Sci. 2016; 131: 84-99.
20. Tayano, T., Uchino, H., Sagae, T., Ohta, S., Kitade, S., Satake, H., Murata, M. Locating the active sites of metallocene catalysts supported on acid-treated montmorillonite. J. Mol. Catal. A: Chem. 2016; 420: 228-236.
21. Akpomie, K.G., Dawodu, F.A. Acid-modified montmorillonite for sorption of heavy metals from automobile effluent. Beni-Suef University J. Basic and Appl. Sci. 2016; 5 (1): 1-12.
22. Makhoukhi, B., Didi, M. A., Villemin, D., Azzouz, A. Acid activation of bentonite for use as a vegetable oil bleaching agent. Grasas Aceites. 2009; 60 (4): 343-349.
Balcı S. JOTCSA. 2018; 1(2); 201-212. RESEARCH ARTICLE
212
23. Zhao, Y.H., Wang, Y.J., Hao, Q.Q., Liu, Z.T., Liu, Z.W. Effective activation of montmorillonite and its application for Fischer-Tropsch synthesis over ruthenium promoted cobalt. Fuel Process Technol. 2015; 136: 87-95.
24. Michelle J.C. Rezende, M.J.C., Pinto, A.C. Esterification of fatty acids using acid-activated Brazilian smectite natural clay as a catalyst. Renew. Energ. 2016; 92: 171-177.
25. Elfadly, A.M., Zeid, I.F., Yehia, F.Z., Abouelela, M.M., Rabie, A.M. Production of aromatic hydrocarbons from catalytic pyrolysis of lignin over acid-activated bentonite clay. Fuel Process Technol. 2017; 163: 1-7.
26. Yu, W., Wang, P., Zhou, C., Zhao, H., Tong, D., Zhang, H., Yang, H., Ji, S., Wang, H. Acid-activated and WOx-loaded montmorillonite catalysts and their catalytic behaviors in glycerol dehydration. Chinese J. Catal. 2017; 38(6): 1087-1100.
27. Taylor, D.R., Hills, W. Process for making acid activated bleaching earth using high suspectibility source clay and novel bleaching earth product. 1991; US-5008226.
28. Taylor, D.R., Jenkins, D.B., Acid activated clays. Soc. Min. Eng. AIME Trans. 1998; 282: 1901–10.
29. Taylor, D.R., Ungermann, C.B. Process for making acid activated bleaching earth using high susceptibility source clay and novel bleaching earth product. 1999. US- 5008226A.
30. Antonio Ortiz, N.J., Solis, S.G., Thomassiny, V.E., Ruf, F. Amorphous adsorbent, method of obtaining the same and its use in the bleaching of fats and/or oils. 2008 CA-2668729A1.
31. Balci, S., Gökçay, E. Effects of drying methods and calcination temperature on the physicochemical properties of iron intercalated clays. Mater. Chem. Phys. 2002; 76 (1): 46-51.
32. Yu, K., Kumar, N., Aho, A., Roine, J., Heinmaa, I., Murzin, D.Y., Ivaska, A. Determination of acid sites in porous aluminosilicate solid catalysts for aqueous phase reactions using potentiometric titration method. J. Catal. 2016; 335: 117-124
33. Yıldız, N., Aktaş, Z., Çalımlı, A. Sulphuric acid activation of a calcium bentonite. Particul. Sci. Technol. 2004; 22 (1): 21–33.
34. Christidis, G. E., Scott, P.W., Dunham, A.C. Acid activation and bleaching capacity of bentonites from the islands of Milos and Chios, Aegean, Greece. Appl. Clay Sci. 1997; 12 (4): 329–347.
35. Auer, H., Hofmann, H. Pillared clays characterization of acidity and catalytic properties and comparison with some zeolites. Appl. Catal. A-Gen. 1993; 97 (1): 23–38.

Thank you for copying data from http://www.arastirmax.com