Study of Broensted and Lewis Acid Sites in Phosphates, Silicates and Silica Gels with Molecular Sieve Properties

Study of Broensted and Lewis Acid Sites in Phosphates, Silicates and Silica Gels with Molecular Sieve Properties Full article

Journal

Studies in Surface Science and Catalysis
ISSN: 0167-2991

Output data

Year: 1991, Volume: 69, Pages: 303-311 Pages count : 9 DOI: 10.1016/s0167-2991(08)61582-7

Authors

Kustov L.M. ¹ , Zubkov S.A. ¹ , Kazansky V.B. ¹ , Bondar L.A. ¹

Affiliations

1	N.D. Zelinsky Institute of Organic Chemistry, Academy of Sciences of the USSR, Moscow, Leninsky prosp. 47, 117334, USSR

Broensted and Lewis acid sites in crystalline phosphates, silicates and in gels with molecular sieve properties were studied by IR-spectroscopy. Two types of bridged hydroxyls were found in SAPO-5 which were accessible to adsorbed molecules and were able to interact with ethylene. Lewis sites in metallophosphates, zirconosilicate and in Ti-contaning silica gel were observed which did not interact with weak bases (CO, hydrogen) but formed strong complexes with acetonitrile. They were supposed to be framework metal ions in tetrahedral coordination.

Kustov L.M. , Zubkov S.A. , Kazansky V.B. , Bondar L.A.
Study of Broensted and Lewis Acid Sites in Phosphates, Silicates and Silica Gels with Molecular Sieve Properties
Studies in Surface Science and Catalysis. 1991. V.69. P.303-311. DOI: 10.1016/s0167-2991(08)61582-7 OpenAlex

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