Effect of the degree of dispersion of Pt over MgAl2O4 on the catalytic hydrogenation of benzaldehyde

	Effect of the degree of dispersion of Pt over MgAl2O4 on the catalytic hydrogenation of benzaldehyde
	Zhang, Tao 1; Yan, Feng 1,2; Zhao, Caixian 2; Yi, Lanhua 2; Zhang, Jingcai 1; Ge, Binghui 3; Li, Weizhen 1
刊名	CHINESE JOURNAL OF CATALYSIS
	2017-09-01
卷号	38 期号:9 页码:1613-1620
关键词	Platinum MgAl2O4 spinel Single-atom catalyst Selective hydrogenation Benzaldehyde Benzyl alcohol
英文摘要	\ One of the central tasks in the field of heterogeneous catalysis is to establish structure-function relationships for these catalysts, especially for precious metals dispersed on the sub-nanometer scale. Here, we report the preparation of MgAl2O4-supported Pt nanoparticles, amorphous aggregates and single atoms, and evaluate their ability to catalyze the hydrogenation of benzaldehyde. The Pt species were characterized by N-2 adsorption, X-ray diffraction (XRD), aberration-corrected transmission electron microscopy (ACTEM), CO chemisorption and in situ Fourier transform infrared spectroscopy of the chemisorbed CO, as well as by inductively coupled plasma atomic emission spectroscopy. They existed as isolated or neighboring single atoms on the MgAl2O4 support, and formed amorphous Pt aggregates and then nanocrystallites with increased Pt loading. On the MgAl2O4 support, single Pt atoms were highly active in the selective catalytic hydrogenation of benzaldehyde to benzyl alcohol. The terrace atoms of the Pt particles were more active but less selective; this was presumably due to their ability to form bridged carbonyl adsorbates. The MgAl2O4-supported single-atom Pt catalyst is a novel catalyst with a high precious atom efficiency and excellent catalytic hydrogenation ability and selectivity. (C) 2017, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]	Chemistry ; Engineering
关键词[WOS]	LIQUID-PHASE HYDROGENATION ; SINGLE-ATOM CATALYSTS ; CO OXIDATION ; BENZYL ALCOHOL ; RU/C CATALYSTS ; PLATINUM ; TEMPERATURE ; ZEOLITES ; SURFACES
收录类别	SCI ; ISTP
语种	英语
WOS记录号	WOS:000411423600022
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150097]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 2.Xiangtan Univ, Minist Educ, Sch Chem, Key Lab Environm Friendly Chem & Applicat, Xiangtan 411105, Peoples R China 3.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Tao,Yan, Feng,Zhao, Caixian,et al. Effect of the degree of dispersion of Pt over MgAl2O4 on the catalytic hydrogenation of benzaldehyde[J]. CHINESE JOURNAL OF CATALYSIS,2017,38(9):1613-1620.
APA	Zhang, Tao.,Yan, Feng.,Zhao, Caixian.,Yi, Lanhua.,Zhang, Jingcai.,...&Li, Weizhen.(2017).Effect of the degree of dispersion of Pt over MgAl2O4 on the catalytic hydrogenation of benzaldehyde.CHINESE JOURNAL OF CATALYSIS,38(9),1613-1620.
MLA	Zhang, Tao,et al."Effect of the degree of dispersion of Pt over MgAl2O4 on the catalytic hydrogenation of benzaldehyde".CHINESE JOURNAL OF CATALYSIS 38.9(2017):1613-1620.