Structural transformation of Pd-alpha-Fe2O3 and Pd-gamma-Fe2O3 catalysts and application in the CO oxidation reaction

	Structural transformation of Pd-alpha-Fe2O3 and Pd-gamma-Fe2O3 catalysts and application in the CO oxidation reaction
	Xu, Hong 1; Ni, Ke 1; Li, Xiaokun 1; Fang, Guangzong 2; Fan, Guohong 1
刊名	RSC ADVANCES
	2017
卷号	7 期号:81 页码:51403-51410
英文摘要	Pd-alpha-Fe2O3 and Pd-gamma-Fe2O3 catalysts were acquired by treating Pd-Fe catalysts with redox pretreatment. These catalysts were characterized by various techniques and applied in the CO oxidation reaction. Characterization reveals that the Pd-alpha-Fe2O3 catalyst is obtained after calcination in air at 400 degrees C. The following reduction at lower temperature forms the Pd-gamma-Fe2O3 catalyst. In the case of larger Pd (or PdO) and Fe2O3 nanoparticles, the Pd-gamma-Fe2O3 catalyst is highly active for low temperature CO oxidation compared with the Pd-alpha-Fe2O3 catalyst, which may originate from the high oxygen storage properties of gamma-Fe2O3 and stronger interaction between Pd and gamma-Fe2O3. Higher reduction temperature results in much larger particle sizes and decreased activity. Stability tests also indicate that the highly active Pd-gamma-Fe2O3 catalyst could transform to Pd-alpha-Fe2O3 in reactive atmosphere, leading to catalyst deactivation. Re-reduction treatment of the inactivated catalyst results in reproduction of the activity.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
关键词[WOS]	RAY PHOTOELECTRON-SPECTROSCOPY ; METAL-SUPPORT INTERACTIONS ; LOW-TEMPERATURE ; CARBON-MONOXIDE ; PREFERENTIAL OXIDATION ; BIMETALLIC CATALYSTS ; PD CATALYSTS ; XPS SPECTRA ; IRON-OXIDES ; PT-FE
收录类别	SCI
语种	英语
WOS记录号	WOS:000414780700039
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/149676]
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.Anhui Univ Technol, Sch Chem & Chem Engn, Maanshan 243002, Anhui, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Xu, Hong,Ni, Ke,Li, Xiaokun,et al. Structural transformation of Pd-alpha-Fe2O3 and Pd-gamma-Fe2O3 catalysts and application in the CO oxidation reaction[J]. RSC ADVANCES,2017,7(81):51403-51410.
APA	Xu, Hong,Ni, Ke,Li, Xiaokun,Fang, Guangzong,&Fan, Guohong.(2017).Structural transformation of Pd-alpha-Fe2O3 and Pd-gamma-Fe2O3 catalysts and application in the CO oxidation reaction.RSC ADVANCES,7(81),51403-51410.
MLA	Xu, Hong,et al."Structural transformation of Pd-alpha-Fe2O3 and Pd-gamma-Fe2O3 catalysts and application in the CO oxidation reaction".RSC ADVANCES 7.81(2017):51403-51410.