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论文类型：期刊论文

发表时间：2019-04-24

发表刊物：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录刊物：SCIE、EI

卷号：58

期号：16

页面范围：6298-6308

ISSN号：0888-5885

关键字：Aldehydes; Costs; Furfural; Hydrogenation; Molar ratio; Precious metals; Ternary alloys, Catalytic transfer hydrogenation; Copper content; Furfuryl alcohol; Hydrogen donor; Noble metal catalysts; Rate determining step; Reaction cycles; Transfer hydrogenations, Catalyst activity

摘要：2-Methylfuran production through catalytic transfer hydrogenation (CTH) of furfural in liquid phase has been investigated over CuZnAl catalysts using alcohol as hydrogen donor. Results suggested that furfuryl alcohol was generated immediately and subsequently transformed into 2-methylfuran. The cleavage of C-O(H) was the rate determining step and positively relied on the copper content. Prereduction of CuZnAl by H-2 provided surface reduced Cu-0 and Cu+ species with the preservation of the CuAl2O4 phase. By using the Cu2.5Zn-Al-600 catalyst with a Cu/Zn molar ratio of 2.5, we can achieve a 72% 2-methylfuran yield and a specific rate of 7.S mmol(MF)/(g(cat). h) under ordinary pressure in N-2 at 180 degrees C, which is even superior to the reported noble metal catalysts. After six reaction cycles, the catalytic activity remained almost unchanged. The low cost and facile availability of the CuZnAl catalyst make it available for the potential use in industry.