The activity of MI-Y and -X zeolites (M = Li, Na, K, Rb, Cs) in catalysing the title reaction has been analysed together with some relevant physico-chemical characteristics of the catalyst. Some useful correlations, extending to both the series of alkali-metal cation X and Y faujasites, have been found between catalyst performance, some structural properties and excess of negative charge on crystal-lattice oxygen of the solid. The selectivity of the process appears to depend on the relative number of H2S molecules adsorbing through ionic- or radical-type mechanisms onto the catalyst surface and on the relative stability of the intermediates so formed between adsorbed H2S and the zeolite surface site.
Conversion of 2-Methylfuran to 2-Methylthiophene over Alkaline X- and Y-Zeolites / I. Ferino, R. Monaci, V. Solinas, C. Oliva, I. Pieri, L. Forni. - 86:15(1990), pp. 2795-2800. [10.1039/FT9908602795]
Conversion of 2-Methylfuran to 2-Methylthiophene over Alkaline X- and Y-Zeolites
C. Oliva;L. ForniUltimo
1990
Abstract
The activity of MI-Y and -X zeolites (M = Li, Na, K, Rb, Cs) in catalysing the title reaction has been analysed together with some relevant physico-chemical characteristics of the catalyst. Some useful correlations, extending to both the series of alkali-metal cation X and Y faujasites, have been found between catalyst performance, some structural properties and excess of negative charge on crystal-lattice oxygen of the solid. The selectivity of the process appears to depend on the relative number of H2S molecules adsorbing through ionic- or radical-type mechanisms onto the catalyst surface and on the relative stability of the intermediates so formed between adsorbed H2S and the zeolite surface site.
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