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Catalytic activity of mesoporous catalysts in Friedel–Crafts benzylation of benzene

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Abstract

Different samples of metal-incorporated MCM-41 were prepared and used as catalysts in Friedel–Craft’s benzylation of benzene. The catalytic performance was evaluated by off-line GC analysis. Fe-MCM-41 exhibited excellent activity, the sample with Si/Fe ratio = 10 showed 90% conversion with 95% selectivity towards diphenylmethane within a few minutes. Generally, the activity per Fe-site was an order of magnitude higher for the samples containing a combination of Fe2O3 nano-particles and isolated Fe3+ sites. A synergy of two catalytic centers (particles and isolated sites) is proposed to explain the high performance of the highly loaded samples. The catalytic performance of Fe-MCM-41 was superior to other metal-containing MCM-41 (e.g. Ga, Sn, and Ti) catalysts, or other Fe-containing mesoporous materials (e.g. Fe-HMS).

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  1. Chemical & Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, P.O. Box 80204, Jeddah, 21589, Saudi Arabia

    Ahmed Arafat & Yahia Alhamed

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  1. Ahmed Arafat
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  2. Yahia Alhamed
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Correspondence to Ahmed Arafat.

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Arafat, A., Alhamed, Y. Catalytic activity of mesoporous catalysts in Friedel–Crafts benzylation of benzene. J Porous Mater 16, 565–572 (2009). https://doi.org/10.1007/s10934-008-9241-8

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