Abstract: Ferrisilicate analogues of ZSM-5 zeolite have been found to be efficient catalysts for direct oxidation of benzene to phenol using dinitrogen monoxide as an oxidant. The reaction of N2O decomposition over these catalysts has now been studied. Specific active sites (referred to as α-sites) consisting of Fe atoms have been shown to be responsible for catalytic properties of ferrisilicates. Decomposition of N2O on α-sites generates a reactive form of surface oxygen which cannot be produced by O2 adsorption. The concentration of α-sites and the rate of N2O decomposition as functions of iron content over the wide range of its concentrations (from 0.003 to 4.8 wt% Fe2O3) have been studied. When comparing these data with the previous results for ZSM-5 zeolites of ferrialuminosilicate composition, the properties of α-sites have been shown to be identical in both systems. The superior activity of Fe-Al-Si samples to that of Fe-Si samples is accounted for by a higher concentration of α-sites in the former at the same iron content, caused by the favourable influence of Al on Fe distribution throughout the zeolite matrix.

Cite: Sobolev V.I. , Panov G.I. , Kharitonov A.S. , Romannikov V.N. , Volodin A.M. , Ione K.G.
Catalytic Properties of ZSM-5 Zeolites in N2O Decomposition: The Role of Iron
Journal of Catalysis. 1993. V.139. N2. P.435-443. DOI: 10.1006/jcat.1993.1038 WOS Scopus РИНЦ ANCAN OpenAlex

Dates:

Submitted:	Jul 1, 1991
Accepted:	Apr 27, 1992
Published print:	Feb 1, 1993
Published online:	May 25, 2002

Identifiers:

Web of science:	WOS:A1993KK61400011
Scopus:	2-s2.0-33645866494
Elibrary:	30970879
Chemical Abstracts:	1993:133044
Chemical Abstracts (print):	118:133044
OpenAlex:	W2051964655

Citing:

DB	Citing
Web of science	207
Scopus	218
Elibrary	224
OpenAlex	212

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