SHAPE-SELECTIVE ISOPROPYLATION OF BIPHENYL OVER A HIGHLY DEALUMINATEDMORDENITE - EFFECT OF PROPYLENE PRESSURE

Authors
TU X MATSUMOTO M MATSUZAKI T HANAOKA T KUBOTA Y KIM JH SUGI Y
Citation
X. Tu et al., SHAPE-SELECTIVE ISOPROPYLATION OF BIPHENYL OVER A HIGHLY DEALUMINATEDMORDENITE - EFFECT OF PROPYLENE PRESSURE, Catalysis letters, 21(1-2), 1993, pp. 71-75
Citations number
9
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
21
Issue
1-2
Year of publication
1993
Pages
71 - 75
Database
ISI
SICI code
1011-372X(1993)21:1-2<71:SIOBOA>2.0.ZU;2-V
Abstract
A highly dealuminated H-mordenite (H-M) catalyzed the selective isopro pylation of biphenyl to 4,4'-diisopropylbiphenyl (4,4'-DIPB). The high selectivity is ascribed to the shape-selective catalysis in mordenite pores. The selectivity of 4,4'- DIPB decreased during the isopropylat ion of biphenyl due to isomerization of 4,4'-DIPB under low propylene pressure. The increase of propylene pressure suppressed the isomerizat ion in the isopropylation. 4,4'-DIPB itself was isomerized over highly dealuminated H-M under low propylene pressure.