文献类型：期刊文献

英文题名：Enhanced Catalytic Performance for Hydrogenation of Substituted Nitroaromatics over Ir-Based Bimetallic Nanocatalysts

作者：Yu, Hongbo[1,2];Tang, Weiqiang[1,2];Li, Kaijie[1,2];Zhao, Shuangliang[1,2];Yin, Hongfeng[3];Zhou, Shenghu[1,2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, 1219 Zhongguan West Rd, Ningbo 315201, Zhejiang, Peoples R China

年份：2019

卷号：11

期号：7

起止页码：6958

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20190806515244);WOS:【SCI-EXPANDED(收录号:WOS:000459642200028)】；

基金：This work is financially supported by the National Natural Science Foundation of China (Grant Nos. 21776090, 21571183, and 21878078) as well as the Open Project of State Key Laboratory of Chemical Engineering at East China University of Science and Technology (SKL-ChE-17C02). S.Z. thanks the support of Fok Ying Tong Education Foundation (151069).

语种：英文

外文关键词：bimetallic nanoparticles; selective hydrogenation; nitroaromatics; nanocatalysis; Ir-based catalysts

摘要：IrM (M = Fe, Co, and Ni) alloy nanoparticles (NPs) were synthesized in a solution by employing butyllithium as a reduction agent and oleylamine as a stabilizing agent, and the alumina-supported IrM bimetallic nanoparticles were tested for selective hydrogenation of various substituted nitroaromatics. The relevant characterizations including X-ray diffraction, X-ray photoelectron spectra, transmission electron microscopy, and diffuse reflectance fourier transform infrared with CO probes confirm that IrM NPs are uniform alloys. The obtained IrM/Al2O3 catalysts show significantly enhanced catalytic activity as well as selectivity relative to individual monometallic Ir catalysts, indicating a unique catalytic property of bimetallic alloy nanostructures. Among these bimetallic catalysts, IrNi/Al2O3 illustrate the highest activity and selectivity for hydrogenation of various substituted nitroaromatics. Calculations by density functional theory suggest that bimetallic structures of IrNi facilitate the reactant adsorption and product desorption, resulting in enhanced catalytic performance.