A durable Ni/La-Y catalyst for efficient hydrogenation of γ-valerolactone into pentanoic biofuels

查看全文 作　　者：Jiang [1,2]He;Lu [1]Lin;Meng [3]Liu;Caixia [3]Miao;Zhijie [3]Wu;Rui [4]Chen;Shaohua [4]Chen;Tiehong [4]Chen;Yang [1]Su;Tao [1]Zhang;Wenhao [1]Luo

机构地区：[1]CAS Key Laboratory of Science and Technology on Applied Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China;[2]University of Chinese Academy of Sciences,Beijing 100049,China;[3]State Key Laboratory of Heavy Oil Processing and Key Laboratory of Catalysis of CNPC,China University of Petroleum,Beijing 102249,China;[4]Key Laboratory of Advanced Energy Materials Chemistry,Nankai University,Tianjin 300350,China

出　　处：《Journal of Energy Chemistry》索引2022年第31卷第7期,共10页

基　　金：The National Key R&D Program of China(2018YFB1501602);the National Natural Science Foundation of China(21721004 and 22078316)are acknowledged for financial support。 摘　　要：Zeolite-supported metal catalysts containing hydrogenation centers and acid sites are promising in the chemoselective hydrogenation of biomass platform molecules into value-added chemicals and fuels.The primary challenge of employing such bifunctional catalysts for biomass conversion lies in catalyst stability in the liquid phase under harsh conditions. Herein, we have prepared a Ni/La-Y nanocatalyst via an improved wet impregnation method. Compared with Ni nanoparticles on H-Y, La addition shows a significantly enhanced stability and performance in the continuous liquid-phase hydrogenation of γ-valerolactone(GVL) into ethyl pentanoate(EP) at 200 ℃ for 1000 h. Complementary characterization studies reveal that La addition in the metal/zeolite catalyst not only efficiently modulates the acid property of the zeolite to alleviate coke formation, but also suppresses zeolite dealumination and metal agglomeration and leaching upon catalysis over a 1000 h period. These findings provide an efficient approach for improving the stability of zeolite-supported bifunctional catalysts, leading to potential application in hydrogen-assisted biomass valorization under the liquid-phase conditions. 关键词：NICKEL ZEOLITE HYDROGENATION STABILITY BIOFUEL

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A durable Ni/La-Y catalyst for efficient hydrogenation of γ-valerolactone into pentanoic biofuels

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