A new solid acid-based route to linear alkylbenzenes

被引:72
作者
Clark, JH [1 ]
Monks, GL
Nightingale, DJ
Price, PM
White, JF
机构
[1] Univ York, Clean Technol Ctr, York YO10 5DD, N Yorkshire, England
[2] MEL Chem, Manchester M27 8LS, Lancs, England
[3] Engelhard Corp, Res & Dev, Beachwood, OH 44122 USA
基金
英国工程与自然科学研究理事会;
关键词
sulfated zirconia; linear alkylbenzenes; solid acids; Friedel-Crafts reactions;
D O I
10.1006/jcat.2000.2912
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We have investigated the use of sulfated zirconia as a catalyst for the alkylation of benzene with long-chain linear alkenes, Optimum activity was obtained for SZ calcined between 500 to 550 degrees C with subsequent cooling in a desiccator. Spectroscopic pyridine titration of the calcined catalyst shows that SZ is essentially Bronsted in nature under normal reaction conditions. Activity and selectivity are comparable to those of AlCl3. A relationship between catalyst reusability and the pore structure has been observed, Microporous sulfated zirconia was found to be deactivated after the initial reaction, whereas mesoporous sulfated zirconia was reusable. The deactivated catalysts can be regenerated by both solvent extraction and thermal treatment; the latter resulted in complete regeneration of catalyst activity. (C) 2000 Academic Press.
引用
收藏
页码:348 / 350
页数:3
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