文献类型：期刊文献

英文题名：Highly Efficient Ir-CoOx Hybrid Nanostructures for the Selective Hydrogenation of Furfural to Furfuryl Alcohol

作者：Yu, Hongbo[1,2];Zhao, Jihao[1];Wu, Chunzheng[3];Yan, Bo[2];Zhao, Shuangliang[1];Yin, Hongfeng[2];Zhou, Shenghu[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai Key Lab Multiphase Mat Chem Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China;[3]Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Peoples R China

年份：2021

卷号：37

期号：5

起止页码：1894

外文期刊名：LANGMUIR

收录：;EI(收录号：20210809948499);WOS:【SCI-EXPANDED(收录号:WOS:000618892400025)】；

基金：This work is financially supported by the National Natural Science Foundation of China (Grant Nos. 22078099, 22072171, 21776090, 21571183, and 21902169) and the Ningbo Science and Technology Innovation 2025 (Grant Nos. 2019B10041 and 2018B10077) from the Ningbo Science and Technology Bureau. H. Yu thanks the project funded by the China Postdoctoral Science Foundation (Grant No. 2020M671830) and the Natural Science Foundation of Ningbo (Grant No. 202003N4348).

语种：英文

外文关键词：Alcohols - Aluminum compounds - Binary alloys - Cobalt alloys - Furfural - Transition metals - Aldehydes - Catalysis - Catalyst activity - Transition metal oxides - Iridium compounds - Nanoparticles

摘要：Decoration of noble metals with transition-metal oxides has been intensively studied for heterogeneous catalysis. However, controllable syntheses of metal-metal oxide heterostructures are difficult, and elucidation of such interfaces is still challenging. In this work, supported IrCo alloy nanoparticles are transformed into supported Ir-CoOx close-contact nanostructures by in situ calcination and following selective reduction. Relative to Ir/Al2O3, Ir-CoOx/Al2O3 shows greatly enhanced activities for the hydrogenation of furfural derivatives to the corresponding furfuryl alcohol derivatives with more than 99% selectivity and demonstrates significantly improved activities and selectivity for hydrogenations of alpha,beta-unsaturated aldehydes to alpha,beta-unsaturated alcohols. The modification of Ir surfaces with CoOx prevents Ir nanoparticles from growing, achieving high thermal and catalytic stabilities. Theoretic calculation suggests that the better catalytic performance of Ir-CoOx/Al2O3 is ascribed to the Ir-CoOx interaction, which promotes the absorption of furfural as well as desorption of furfuryl alcohol, resulting in enhanced catalytic activities.