Benzene alkylation with 1-dodecene over H-mordenite zeolite

Citation
B. Wang et al., Benzene alkylation with 1-dodecene over H-mordenite zeolite, CATAL LETT, 76(1-2), 2001, pp. 99-103
Citations number
19
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
CATALYSIS LETTERS
ISSN journal
1011-372X → ACNP
Volume
76
Issue
1-2
Year of publication
2001
Pages
99 - 103
Database
ISI
SICI code
1011-372X(2001)76:1-2<99:BAW1OH>2.0.ZU;2-0
Abstract
The alkylation of benzene with 1-dodecene was studied over solid-acid zeoli tes, such as H-mordenite, H-USY, HY, and H-ZSM-5, in a batch reactor at 140 degreesC and 10 atm. H-mordenite showed the highest selectivity of 78.2% f or 2-phenyldodecane with 100% conversion. Depending on the catalyst amount (from 0.5 to 1.0 g) and the molar ratio of benzene to 1-dodecene (from 7 to 10), the conversion of 1-dodecene varied in the range from 63.8 to 100%. F urthermore, modification of H-mordenite by dealumination using nitric acid and by solid ion exchange with Mg2+ and Fe3+ ions led to the improvement of the selectivity for 2-phenyldodecane, and simultaneously reduction of the conversion of 1-dodecene is observed. In addition, it was found by pyridine adsorption FT-IR study that both strong Bronsted and Lewis acid sites are closely related to the conversion.