Benzylation of benzene and other aromatics by benzyl chloride over mesoporous AlSBA-15 catalysts

Vinu, A., Sawant, D. P., Ariga, K., Hartmann, M. and Halligudi, S. B. (2005) Benzylation of benzene and other aromatics by benzyl chloride over mesoporous AlSBA-15 catalysts. Microporous and Mesoporous Materials, 80 1-3: 195-203. doi:10.1016/j.micromeso.2004.12.012


Author Vinu, A.
Sawant, D. P.
Ariga, K.
Hartmann, M.
Halligudi, S. B.
Title Benzylation of benzene and other aromatics by benzyl chloride over mesoporous AlSBA-15 catalysts
Journal name Microporous and Mesoporous Materials   Check publisher's open access policy
ISSN 1387-1811
1873-3093
Publication date 2005-05
Sub-type Article (original research)
DOI 10.1016/j.micromeso.2004.12.012
Volume 80
Issue 1-3
Start page 195
End page 203
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
Aluminum-containing mesoporous molecular sieves AlSBA-15 with different nSi/nAl ratios and AlMCM-41 have been synthesized hydrothermally and characterized in detail by physicochemical methods, viz. XRD, N2 adsorption and 27Al NMR spectroscopy. The low angle XRD and N2 adsorption measurements reveal that the structural order of SBA-15 was retained after the incorporation of Al. The increase of the unit cell parameter with increasing aluminum content and 27Al MAS NMR spectroscopy confirm the incorporation of aluminum in the framework. Benzylation of benzene and substituted benzenes reaction employing benzyl chloride as the alkylating agent over AlSBA-15 and AlMCM-41 have been investigated. The influence of various reaction parameters such as reaction temperature, reactant feed ratio and catalyst amount affecting the activity and selectivity of AlSBA-15, have been studied. Among the mesoporous catalysts studied, AlSBA-15(45), where the number in parentheses indicates the molar n Si/nAl ratio, shows both high conversion and high selectivity for the benzylation of benzene. The activity of this catalyst for the benzylation of different aromatic compounds is in the following order: benzene > toluene > p-xylene > mesitylene > anisole. Kinetics of the benzene benzylation over different catalysts have also been investigated.
Keyword Benzylation
AlSBA-15
SBA-15
Alkylation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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