Abstract
An efficient method was established for the green synthesis of 4-methoxybenzophenone using benzoic acid as acylating agent catalyzed by tungstophosphoric acid (HPW) supported on MCM-41 (HPW/MCM-41). The conversion of benzoic acid reached 97.2 % and the selectivity for 4-methoxybenzophenone was 87.4 % under the optimum conditions over a 50 wt.% HPW/MCM-41 catalyst. HPW is proven to be well deposited on MCM-41, which leads to dealumination of MCM-41 and then offers more active centers, as demonstrated by inductively coupled plasma analysis and NH3 temperature-programmed desorption, accounting for the high catalytic activity of HPW/MCM-41.
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Financial support by the National Natural Science Foundation of China (20806018 and 21376060) and the Natural Science Foundation of Hebei Province (B2014201024) are gratefully acknowledged.
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Zhang, H., Han, J., Tian, F. et al. Green synthesis of 4-methoxybenzophenone from anisole and benzoic acid catalyzed by tungstophosphoric acid supported on MCM-41. Res Chem Intermed 41, 6731–6739 (2015). https://doi.org/10.1007/s11164-014-1772-9
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DOI: https://doi.org/10.1007/s11164-014-1772-9