Abstract: Catalytic properties of Fe introduced in the pentasil type zeolite matrices of various composition (B-ZSM-5, Al-ZSM-5, Ga-ZSM-5, Ti-ZSM-5) have been studied. All the matrices were shown to be inert in the title reaction. However, upon iron introduction they may serve as a basis for the development of very active and selective catalysts. The amount of iron needed for this purpose depends dramatically on the matrix composition: Al-ZSM-5 and Ga-ZSM-5 zeolites exhibit high activity even in the presence of 0.01–0.03 wt.% Fe, while B-ZSM-5 and Ti-ZSM-5 zeolites need a 10–100 times more Fe. The distinctions in zeolite activity relate to the fact that the formation of Fe-containing α-sites, catalyzing the reaction, strongly depends on the Brönsted acidity and proceeds with different efficiency in various matrices. But being formed, α-sites in their catalytic performance have only slight dependence on the matrix composition. Activity of B-ZSM-5, Al-ZSM-5, and Ti-ZSM-5 zeolites is described by a common dependence on the concentration of α-sites, revealing their identity in these matrices. In Ga-ZSM-5 matrix, α-sites exhibit a two to three times higher activity. The role of Fe admixtures in the literature disagreement on the origin of zeolite activity is discussed.

Cite: Pirutko L.V. , Chernyavsky V.S. , Uriarte A. , Panov G.I.
Oxidation of Benzene to Phenol by Nitrous Oxide: Activity of Iron in Zeolite Matrices of Various Composition
Applied Catalysis A: General. 2002. V.227. N1-2. P.143-157. DOI: 10.1016/S0926-860X(01)00932-2 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Jun 25, 2001
Accepted:	Oct 18, 2001
Published online:	Feb 12, 2002
Published print:	Mar 8, 2002

Identifiers:

Web of science:	WOS:000174265400014
Scopus:	2-s2.0-0037040468
Elibrary:	13413508
Chemical Abstracts:	2002:135112
Chemical Abstracts (print):	136:237432
OpenAlex:	W174241045

Citing:

DB	Citing
Web of science	136
Scopus	149
Elibrary	149
OpenAlex	140

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