Synthesis of t-butyl-p-cresol with Supported HPWA/SBA-15 Catalyst

Abstract SBA-15 molecular sieve modified by HPWA were prepared and used to sythesize 2t-butyl-p-cresol by the alkylation of p-cresol with MTBE.The catalytic performances of the catalysts were studied in a micro-reactor.The influences of the content of hydrofluoric acid,reaction temperature,space velocity and mol ratio of MTBE to p-cresol on the conversion and the selectivity were analyzed.The results showed that the increasing conversion was attributed to the increase of acidity.The optimum conditions were:phosphotungstic acid is 40%,160 ℃ and the space velocity is 3.0 h~(-1), mol ratio of MTBE to p-cresol is 1.5.The conversion of p-cresol was 65.87%,and the selectivity of 2-t-butyl-p-cresol was 97.81%.

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Received 2008-07-15; published 2008-07-15

Cite this article:

WU Bing~1,SHEN Jian~1,LI Hui-peng~1,FENG Jian~2.Synthesis of t-butyl-p-cresol with Supported HPWA/SBA-15 Catalyst[J] Chemcial Industry and Engineering, 2008,V25(4): 306-309