Influence of W on the reduction behaviour and Brønsted acidity of Ni/TiO₂ catalyst in the hydrogenation of levulinic acid to valeric acid: Pyridine adsorbed DRIFTS study

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• 作者：V. Vijay Kumar^a ; ^b ; G. Naresh^a ; ^b ; S. Deepa^a ; P. Ganga Bhavani^a ; M. Nagaraju^a ; M. Sudhakar^a ; K.V.R. Chary^a ; J. Tardio^b ; S.K. Bhargava^b ; ^{suresh.bhargava@rmit.edu.au} ; A. Venugopal^a ; ^{akula@iict.res.in} ; ^{akulavenugopal@gmail.com}
• 关键词：Levulinic acid ; Valeric acid ; γ-Valerolactone ; DRIFTS ; W-Ni/TiO2 ; Br&oslash ; nsted-Lewis acidity
• 刊名：Applied Catalysis A: General
• 出版年：2017
• 出版时间：5 February 2017
• 年：2017
• 卷：531
• 期：Complete
• 页码：169-176
• 全文大小：1686 K
• 卷排序：531

文摘

Strong interaction between W and Ni leads to increased Ni2+/Ni0 ratio on surface. At ambient H2 pressure levulinic acid was converted to valeric acid over W-Ni/TiO2. Lewis acid site in combination with Ni0 active for γ-valerolactone. Brønsted acid sites close to nickel sites are responsible for valeric acid formation.