Isopropylation of naphthalene over mordenite zeolites: Effect of Si/Al ratio

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Title:	Isopropylation of naphthalene over mordenite zeolites: Effect of Si/Al ratio
Authors:	Tseng,IM;Wu,JF;Chen,YW
Contributors:	化學工程與材料工程學系
Keywords:	SHAPE-SELECTIVE ALKYLATION;POLYNUCLEAR AROMATICS;H-MORDENITE;DEALUMINATION;BIPHENYL;CATALYSTS
Date:	1999
Issue Date:	2010-06-29 17:28:57 (UTC+8)
Publisher:	中央大學
Abstract:	Isopropylation of naphthalene with propylene was carried out over mordenite zeolites with various Si/Al ratios in the range of 23 and 112. The reaction was carried out in a fixed-bed reactor at 300 degrees C, 7 kg/cm(2), WHSV=1 h(-1), and the molar ratio of propylene to naphthalene of 6. All mordenite zeolites exhibited significant shape selective properties. The naphthalene conversion decreased with an increase in the Si/Al ratio of the zeolite. Also, the selectivity of 2, 6- and 2, 7-diisopropylnaphthalene (DIPN) in total DIPN increased with an increase in the Si/Al ratio. The compositions of 2,6-DIPN in total DIPN and the ratios of 2, 6-/2,7 isomers for all zeolites are far above equilibrium values. Both of them increased with an increase in the Si/Al ratios. The shape selective properties would become more significant with an increase in the Si/Al ratio and the reaction time on stream.
Relation:	JOURNAL OF THE CHINESE INSTITUTE OF CHEMICAL ENGINEERS
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] journal & Dissertation

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