文献类型：期刊文献

英文题名：Efficient hydrogenation of fatty acids to fatty alcohols and alkanes over Fe@Fe3O4 catalysts with rich oxygen vacancies and Lewis acid sites

作者：Wu, Shiyu[1] Zhang, Yao[1] Liu, Peng[1] Zhang, Xiaolei[2] Cao, Xincheng[3] Xu, Junming[1]

第一作者：Wu, Shiyu

通信作者：Xu, JM[1]

机构：[1]Chinese Acad Forestry, Inst Chem Ind Forest Prod, Key Lab Biomass Energy & Mat,SFA, Natl Engn Lab Biomass Chem Utilizat,Key & Open La, Nanjing 210042, Jiangsu, Peoples R China;[2]Univ Strathclyde, Dept Chem & Proc Engn, Glasgow, Scotland;[3]Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Res, Nanjing, Peoples R China

年份：2026

卷号：528

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20260219882972);Scopus(收录号：2-s2.0-105026839976);WOS:【SCI-EXPANDED(收录号:WOS:001664147300002)】；

基金：National Natural Science Foundation of China (32501594, 32301548) and the Young Talent Promotion Project of Jiangsu Association for Science and Technology (JSTJ-2023-XH019) .

语种：英文

外文关键词：Hydrodeoxygenation; Fe@Fe 3 O 4 catalyst; Fatty alcohol; Oxygen vacancy; Lewis acids

摘要：The development of non-noble metal catalysts for the selective hydrogenation of long-chain fatty acids into value-added chemicals remains a significant challenge. Here, an efficient Fe@Fe3O4 catalyst enriched with oxygen vacancies and weak Lewis acid sites was obtained by tuning the reduction temperature. The catalyst enabled complete conversion of stearic acid with a 97.3 % yield of octadecanol under mild conditions, and maintained high activity after 19 cycles. Moreover, when stearic acid was completely converted to alkanes, the yield of octadecane via the hydrodeoxygenation pathway (97.4 %) was markedly higher than that of heptadecane via the decarbonylation pathway (2.6 %), indicating the catalyst's excellent carbon atom utilization efficiency. Mechanistic studies revealed that metallic Fe efficiently dissociates H2 to generate active hydrogen, while oxygen vacancies and weak Lewis acid sites in Fe3O4 promote carbonyl adsorption and activation. In addition, weak Lewis acid sites interact with the carbonyl oxygen to moderately polarize the C--O bond, thereby suppressing undesired C-C cleavage. These synergistic effects account for the catalyst's high activity and selectivity, providing guidance for the design of advanced non-noble metal catalysts for fatty acid hydrogenation.