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

I. Ming Tseng; Jenn Fang Wu; Yu Wen Chen

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

I. Ming Tseng, Jenn Fang Wu, Yu Wen Chen

Department of Chemical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

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 °C, 7 kg/cm², 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.

Original language	English
Pages (from-to)	93-98
Number of pages	6
Journal	Journal of the Chinese Institute of Chemical Engineers
Volume	30
Issue number	2
State	Published - Mar 1999

Keywords

Isopropylation
Mordenite
Naphthalene

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title = "Isopropylation of naphthalene over mordenite zeolites: Effect of Si/Al ratio",

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 °C, 7 kg/cm2, 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.",

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TY - JOUR

T1 - Isopropylation of naphthalene over mordenite zeolites

T2 - Effect of Si/Al ratio

AU - Tseng, I. Ming

AU - Wu, Jenn Fang

AU - Chen, Yu Wen

PY - 1999/3

Y1 - 1999/3

N2 - 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 °C, 7 kg/cm2, 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.

AB - 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 °C, 7 kg/cm2, 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.

KW - Isopropylation

KW - Mordenite

KW - Naphthalene

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M3 - 期刊論文

AN - SCOPUS:0033102644

SN - 0368-1653

VL - 30

SP - 93

EP - 98

JO - Journal of the Chinese Institute of Chemical Engineers

JF - Journal of the Chinese Institute of Chemical Engineers

IS - 2

ER -

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

Abstract

Keywords

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