文献类型：期刊文献

英文题名：Atomically precise Ag nanoclusters intercalated in zirconium pyrophosphate for efficient hydrogenation of nitroaromatics

作者：Gong, Honghui[1];Lin, Lina[3];Zhao, Xiuge[1];Li, Huan[2];Li, Difan[1];Xu, Zichen[1];Chen, Manyu[1];Huang, Rong[3];Hou, Zhenshan[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Shanxi Univ, Inst Crystalline Mat, Taiyuan 030006, Shanxi, Peoples R China;[3]East China Normal Univ, Key Lab Polar Mat & Devices, Minist Educ, Shanghai 200062, Peoples R China

年份：2019

卷号：574

起止页码：1

外文期刊名：APPLIED CATALYSIS A-GENERAL

收录：;EI(收录号：20190506452389);WOS:【SCI-EXPANDED(收录号:WOS:000460831500001)，CCR-EXPANDED(收录号:WOS:000460831500001)】；

基金：The authors are grateful for support from the National Natural Science Foundation of China (21373082, 21773061), the innovation Program of Shanghai Municipal Education Commission (15ZZ031), and the Natural Science Foundation of Shanghai (16ZR1409500).

语种：英文

外文关键词：Ag nanocluster; Zirconium phosphate; Intercalation; Carbonization; Hydrogenation of nitroaromatics

摘要：Designing and fabricating catalysts with highly dispersed metal nanoclusters (NCs) is very crucial for achieving high activity and selectivity. In this work, all-alkynyl-protected [Ag-74(C CPh)(44)](NO3)(2) cluster (Ag duster) with a well-defined structure was firstly intercalated in alpha-zirconium phosphate (alpha-ZrP) through ion-exchange. Then the atomically precise Ag cluster can be immobilized robustly in the support by a sequential process of carbonization, calcination and reduction. The supported Ag duster showed the relatively high catalytic activity (TOP = 222.9-445.8 h(-1)) and excellent recyclability for hydrogenation of a variety of nitroaromatics, as well as the compounds with carbon-carbon double bonds even if the loading of Ag was as low as 0.72 wt.%. Zirconium pyrophosphate acts as not only a stabilizer of Ag duster through a spatial confinement, but also an adsorption site for nitroaromatics. The residual carbon arisen from thermal decomposition of all-alkynyl ligand coordinating on Ag cluster exerted an important role in protecting Ag duster from sintering. As a result, the intercalation of Ag cluster in the interlayer region is a promising strategy for extending their potential applications in catalysis.