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Effect of phosphorus content on the physicochemical and catalytic properties of pentasils in the ethylbenzene disproportionation reaction
Abstract The physicochemical and catalytic properties of phosphorus-promoted H-ultrasils were examined in the disproportionation of ethylbenzene. It was shown that the chemical modification of H-ultrasil with ammonium hydrogen phosphate leads to the redistribution of acid sites and a decrease in the sorption capacity of the zeolite. As a result, the ratio between Lewis and Brönsted acid sites in the zeolite increases in a more pronounced manner and zeolite channels narrow, thereby enhancing the paraselectivity for isomers.
Effect of phosphorus content on the physicochemical and catalytic properties of pentasils in the ethylbenzene disproportionation reaction
Abstract The physicochemical and catalytic properties of phosphorus-promoted H-ultrasils were examined in the disproportionation of ethylbenzene. It was shown that the chemical modification of H-ultrasil with ammonium hydrogen phosphate leads to the redistribution of acid sites and a decrease in the sorption capacity of the zeolite. As a result, the ratio between Lewis and Brönsted acid sites in the zeolite increases in a more pronounced manner and zeolite channels narrow, thereby enhancing the paraselectivity for isomers.
Effect of phosphorus content on the physicochemical and catalytic properties of pentasils in the ethylbenzene disproportionation reaction
Mamedov, S. E. (Autor:in) / Akhmedov, E. I. (Autor:in) / Ismailova, S. B. (Autor:in) / Shamilov, N. T. (Autor:in)
Petroleum Chemistry ; 49 ; 133-135
01.03.2009
3 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Catalytic Disproportionation of Ethylbenzene over Ln-Modified HZSM-5 Zeolites
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