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论文类型：期刊论文
发表时间：2014-09-15
发表刊物：CATALYSIS TODAY
收录刊物：SCIE、EI、Scopus
卷号：233
页面范围：77-82
ISSN号：0920-5861
关键字：Selective oxidation; Biomass conversion; Formic acid; Heteropoly acid
摘要：Direct conversion of raw biomass materials to fine chemicals is of great significance from both economic and ecological perspectives. In this paper, we report that a Keggin-type vanadium-substituted phosphomolybdic acid catalyst, namely H-4 PVMo11 O-40, is capable of converting various biomass-derived substrates to formic acid and acetic acid with high selectivity in a water medium and oxygen atmosphere. Under optimized reaction conditions, H4PVMo11 O-40 gave an exceptionally high yield of formic acid (67.8%) from cellulose, far exceeding the values achieved in previous catalytic systems. Our study demonstrates that heteropoly acids are generally effective catalysts for biomass conversion due to their strong acidities, whereas the composition of metal addenda atoms in the catalysts has crucial influence on the reaction pathway and the product selectivity. (C) 2013 Elsevier B.V. All rights reserved.