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An improved acylation of phenol over modified ZSM-5 catalysts

โœ Scribed by Y.V. Subba Rao; S.J. Kulkarni; M. Subrahmanyam; A.V. Rama Rao


Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
273 KB
Volume
133
Category
Article
ISSN
0926-860X

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โœฆ Synopsis


The acylation of phenol with acetic anhydride was carried out over different modified ZSM-5 catalysts. Co, Cu, and Ce showed a promoting effect. The best temperature and weight hourly space velocity for this reaction were found to be 250ยฐC and 0.5 h-~, respectively. ZSM-5(30) was found to be a better catalyst than ZSM-5(150) and in the acylation of phenol. A plausible reaction mechanism is also discussed.


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Aromatization of dilute ethylene over Ga
โœ Vasant R. Choudhary; Panjala Devadas; Subhabrata Banerjee; Anil K. Kinage ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 270 KB

Aromatization of dilute ethylene (5 mol% ethylene in N 2 ) over dierent Ga-modiยฎed H-ZSM-5 type zeolite catalysts (viz. Ga/H-ZSM-5 (Ga loading 0%, 1.4% and 4.7%), H-GaMFI and H-GaAlMFI (with dierent bulk and framework compositions of Si, Ga and Al)) at 400ยฐC and atmospheric pressure was investigated