Isopropylation of benzene in the vapour phase over zeolite beta modified by lanthanum, cerium, gallium and zinc

Authors
Gnanapragasam, S Krishnasamy, V Mohan, V
Citation
S. Gnanapragasam et al., Isopropylation of benzene in the vapour phase over zeolite beta modified by lanthanum, cerium, gallium and zinc, I J CHEM A, 40(9), 2001, pp. 947-952
Citations number
16
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
40
Issue
9
Year of publication
2001
Pages
947 - 952
Database
ISI
SICI code
0376-4710(200109)40:9<947:IOBITV>2.0.ZU;2-L
Abstract
Zeolite beta has been synthesized with varying Si/Al ratio. Beta-15 has bee n modified by La3+, Ce3+, Ga3+ and Zn2+ and characterized by physico-chemic al analysis. Isopropylation of benzene with isopropanol has been done in a fixed bed flow type reactor under different experimental conditions and the products analysed by G.C. The influences of cations, aluminium content, re action and calcination temperatures, space velocity, molar ratio of benzene to isopropanol (IPA) and time on stream (TOS) on the activity and selectiv ity to cumene and di-isopropylbenzene (DIPB) have been investigated and dis cussed.