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Isopropylation of Naphthalene over Dealuminated H-Mordenites

D. Mravec, J. Chylík, M. Michvocík, M. Hronec, A. Smiešková, and P. Hudec

Department of Organic Technology, Faculty of Chemical Technology, Slovak University of Technology, SK-812 37 Bratislava


Abstract: The effect of dealumination on catalytic properties of H-mordenites and modification of dealuminated H-mordenites by impregnation with 10 mass % of cerium was studied for isopropylation of naphthalene with propylene in a tubular reactor at a temperature of 220°C and at atmospheric. pressure. Dealumination of mordenites (n(SiO2)/n(Al2O3) = 14-67) increases the 2,6-selectivity and β,β'-selectivity from 45 % to 69 % and from 92 % to 100 %, respectively The deactivation of external acid sites of dealuminated H-mordenites by cerium impregnation (10 mass ro of cerium) led to an increase in the 2,6-selectivity to 75.5 %. The β,β'-selectivity was 100 % for all cerium-modified zeolites tested.

Full paper in Portable Document Format: 524a218.pdf


Chemical Papers 52 (4) 218–221 (1998)

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