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Study of the Nature of Acid Sites of Montmorillonites Pillared with Aluminium and Oligosilsesquioxane Complex Cations. 1. Brönsted Acidity

Published online by Cambridge University Press:  28 February 2024

S. A. Zubkov ,
L. M. Kustov ,
V. B. Kazansky ,
G. Fetter ,
D. Tichit  and
F. Figueras
S. A. Zubkov
Affiliation:
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 117334, Moscow, Leninsky Pr. 47, Russia
L. M. Kustov
Affiliation:
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 117334, Moscow, Leninsky Pr. 47, Russia
V. B. Kazansky
Affiliation:
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 117334, Moscow, Leninsky Pr. 47, Russia
G. Fetter
Affiliation:
Laboratoire de Chimie Organique Physique et Cinétique Chimique Appliquées, URA 418 du CNRS, ENSCM, 8 Rue Ecole Normale - 34053 Montpellier Cedex 1, France
D. Tichit
Affiliation:
Laboratoire de Chimie Organique Physique et Cinétique Chimique Appliquées, URA 418 du CNRS, ENSCM, 8 Rue Ecole Normale - 34053 Montpellier Cedex 1, France
F. Figueras*
Affiliation:
Laboratoire de Chimie Organique Physique et Cinétique Chimique Appliquées, URA 418 du CNRS, ENSCM, 8 Rue Ecole Normale - 34053 Montpellier Cedex 1, France
*
*Present address: CNRS, 2 Avenue A, Einstein, 69626 Villeurbanne, France
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Abstract

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Two samples, obtained by pillaring a Wyoming montmorillonite with hydroxy aluminium and oligosilsesquioxane cations, were studied by stepwise thermal desorption of ammonia and by highly sensitive diffuse reflectance IR-spectroscopy. For both clays, the adsorption of ammonia shows a total number of acid sites equal to 0.35 meq/g, with acid strengths comparable to that of HY zeolites. By IR reflectance spectroscopy, Brönsted acid sites with an acid strength comparable to that of bridging hydroxyls in zeolites were found in Al samples but not on Si-montmorillonites. These sites were characterized by an overtone band at 7100 cm-1 and an activity for ethylene oligomerization at 300 K.

Keywords

Brönsted acidityDiffuse reflectance IR-spectroscopyMontmorillonitesPillared clays
Type
Research Article
Information
Clays and Clay Minerals , Volume 42 , Issue 4 , August 1994 , pp. 421 - 427
Copyright
Copyright © 1994, Clay Minerals Society

References

Bodoardo, S., Figueras, F., and Garrone, E., (1994) IR study of Bronsted acidity of Al-pillared montmorillonite: J. Catal., 147, 223–230.CrossRefGoogle Scholar
Fetter, G., Tichit, D., Massiani, P., Dutartre, R., and Figueras, F., (1990) Preparation and characterization of montmorillonite pillared by cationic silicon species: in Proceedings 12th Ibero-American Symp. Catalysis, Rio de Janeiro (Brasil), 1990, Instituto Brasileiro Petroleo 2, 448–457.Google Scholar
Figueras, F., (1988) Pillared clays as catalysts: Catal. Rev. Sci-Eng. 30, 457–499.CrossRefGoogle Scholar
Figueras, F., Klapyta, Z., Massiani, M., Mountassir, M., Tichit, D., Fajula, F., Gueguen, C., Bousquet, J., and Auroux, A., (1990) Use of competitive ion exchange for intercalation of montmorillonites with hydroxy-aluminium species: Clays & Clay Minerals 38, p. 257.CrossRefGoogle Scholar
Hedge, S. G., Ratnasamy, P., Kustov, L. M., and Kazansky, V. B., (1988) Acidity and catalytic activity of SAPO-5 and AIPO-5 molecular sieves: Zeolites 8: 137–141.CrossRefGoogle Scholar
He Ming-Yuan, Zhonghui L., and Enze, M., (1988) Acidic and hydrocarbon catalytic properties of pillared clays: Catal. Today 2, 321–338.CrossRefGoogle Scholar
Kazansky, V. B., Borovkov, V. Yu., and Kustov, L. M., (1984) IR diffuse reflectance study of oxide catalysts. Use of molecular hydrogen adsorption as a test for surface active sites: Proceedings 8th Intern. Congr. on Catalysis, Berlin, 1984, Verlag Chemie (Weinheim) III, 3–14.Google Scholar
Kazansky, V. B., Kustov, L. M., and Borovkov, V. Yu. 1983 () Infra-red diffuse reflectance study of high silica zeolites: Zeolites 3, 77–81.CrossRefGoogle Scholar
Kazansky, V. B., (1984) The study of Brönsted and Lewis acidity of decationized and dealuminated zeolites by IR diffuse reflectance spectroscopy and quantum chemistry: in Structure and Reactivity of Modified Zeolites, Jacobs, P. A., Jiru, P., and Kazansky, V., eds., Elsevier, Amsterdam , 61–75.CrossRefGoogle Scholar
Kikuchi, E., and Matsuda, T., (1988) Shape selective acid catalysis by pillared clays: Catal. Today 2, 297–307.CrossRefGoogle Scholar
Kustov, L. M., Borovkov, V. Yu., and Kazansky, V. B., (1981) Spectra of hydroxyl groups in zeolites in the near-infra red region: J. Catal. 72, 149–159.CrossRefGoogle Scholar
Kustov, L. M., Borovkov, V. Yu., and Kazansky, V. B., (1984) Study of ethylene oligomerization on Braönsted and Lewis acidic sites of zeolites using diffuse reflectance IR spectroscopy: in Structure and Reactivity of Modified Zeolites, Jacobs, P., Jiru, P., and Kazansky, V., eds., Elsevier, Amsterdam , 241–247.CrossRefGoogle Scholar
Lewis, R. M., Ott, K. C., and Van Santen, R. A., (1985) Silica-clay complexes: U.S. Patent 4,510,257, 14 pp.Google Scholar
Lussier, R. J., Magee, J. S., and Vaughan, D. E. W., (1980) Pillared interlayered clay cracking catalysts—Preparation and properties: 7th Canadian Symp. Catal., Edmonton, Alberta, 88–95 (preprint).Google Scholar
Occelli, M. L., and Finseth, D. H., (1986) Surface and catalytic properties of some pillared hectorites: J. Catal. 99, 316–326.CrossRefGoogle Scholar
Plee, D., Borg, F., Gatineau, L., and Fripiat, J. J., (1985) High resolution solid state 27Al and 29Si nuclear magnetic resonance study of pillaud clays: J. Amer. Chem. Soc. 107, 2362–2369.CrossRefGoogle Scholar
Schoonheydt, R. A., (1991) Clays: From two to three dimensions: in Introduction to Zeolites: Science and Practice, Bekkum, H. Van, Flanigen, E. M., and Jansen, J. C., eds., Elsevier, Amsterdam , 201–239.CrossRefGoogle Scholar
Sprung, R., Davis, M. E., Kauffman, J. S., and Dybowski, C., (1990) Pillaring of magadiite with silicate species: Ind. Eng. Chem. Res. 29, 213–220.CrossRefGoogle Scholar
Telbiz, G. M., Galich, P. N., Kustov, P. N., Borovkov, V. Yu., and Kazansky, V. M., (1986) Possibilities of the existence of strongly acid hydroxyl groups in Polycation forms of zeolite X: Kinetics and Catalysis 27, 405–408.Google Scholar
Tennakoon, D. T. B., Jones, W., Thomas, J. M., Ballantine, J. H., and Purnell, J. H., (1987) Characterization of clay and pillared clay catalysts: Solid State Ionics 24, 205–212.CrossRefGoogle Scholar
Thomas, J. M., (1988) Uniform heterogeneous catalysts: The role of solid state chemistry in their development and design: Angew. Chem. 27, 1973–1991.CrossRefGoogle Scholar
Tichit, D., Fajula, F., Figueras, F., Gueguen, C., and Bousquet, J., (1988a) Influence of the conditions of preparation on the catalytic properties of Al-pillared montmorillonites: in Advances in Fluid Catalytic Cracking, New Orleans, 1987, ACS Symposium Series 375, M. L. Ocelli, ed., American Chemical Society, Washington, D.C., 237–252.Google Scholar
Tichit, D., Fajula, F., Figueras, F., Gueguen, C., and Bousquet, J., (1988b) Catalytic properties of Al-pillared clays in the cracking of heavy fuels: in Proc. 9th Int. Cong. Catalysis, Calgary 1988, Vol. 1, Phillips, M. J., and Ternan, M., eds., Chemical Institute, Canada, 112–119.Google Scholar
Van Hooff, J. H. C., (1980) The conversion of methanol to hydrocarbons using a new type of zeolite as catalyst (Mobil process): in Chemistry and Chemical Engineering of Catalytic Processes, Prins, R., Schuit, G. C. A., eds., NATO Advanced Study Institute Series E., 39, 559–599.Google Scholar
Ward, J. W., (1976) Infrared studies of zeolite surfaces and surface reactions: in Zeolite Chemistry and Catalysis, Rabo, J. A., ed., ACS Monograph 171, Washington, D.C., 118–284.Google Scholar