Tuning the Selectivity of Catalytic Carbon Dioxide Hydrogenation over   Iridium/Cerium Oxide Catalysts with a Strong Metal-Support Interaction

doi:10.1002/anie.201705002

CORC > 北京大学 > 化学与分子工程学院

	Tuning the Selectivity of Catalytic Carbon Dioxide Hydrogenation over Iridium/Cerium Oxide Catalysts with a Strong Metal-Support Interaction
	Li, Siwei ; Xu, Yao ; Chen, Yifu ; Li, Weizhen ; Lin, Lili ; Li, Mengzhu ; Deng, Yuchen ; Wang, Xiaoping ; Ge, Binghui ; Yang, Ce ; Yao, Siyu ; Xie, Jinglin ; Li, Yongwang ; Liu, Xi ; Ma, Ding
刊名	ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
	2017
关键词	catalysis chemical state metal catalysts metal-support interaction WATER-GAS SHIFT CO2 HYDROGENATION LOW-TEMPERATURE METHANOL SYNTHESIS PARTICLE-SIZE OXIDATION-STATE ACTIVE-SITE REDUCTION INTERFACE CERIA
DOI	10.1002/anie.201705002
英文摘要	A one-step ligand-free method based on an adsorption-precipitation process was developed to fabricate iridium/cerium oxide (Ir/CeO2) nanocatalysts. Ir species demonstrated a strong metal-support interaction (SMSI) with the CeO2 substrate. The chemical state of Ir could be finely tuned by altering the loading of the metal. In the carbon dioxide (CO2) hydrogenation reaction it was shown that the chemical state of Ir species-induced by a SMSI-has a major impact on the reaction selectivity. Direct evidence is provided indicating that a single-site catalyst is not a prerequisite for inhibition of methanation and sole production of carbon monoxide (CO) in CO2 hydrogenation. Instead, modulation of the chemical state of metal species by a strong metal-support interaction is more important for regulation of the observed selectivity (metallic Ir particles select for methane while partially oxidized Ir species select for CO production). The study provides insight into heterogeneous catalysts at nano, sub-nano, and atomic scales.; Natural Science Foundation of China [91645115, 21473003, 21222306, 21673273]; National Key R&D Program of China [2017YFB0602200]; 973 Project [2013CB933100]; SCI(E); ARTICLE; 36; 10761-10765; 56
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/471366]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Li, Siwei,Xu, Yao,Chen, Yifu,et al. Tuning the Selectivity of Catalytic Carbon Dioxide Hydrogenation over Iridium/Cerium Oxide Catalysts with a Strong Metal-Support Interaction[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2017.
APA	Li, Siwei.,Xu, Yao.,Chen, Yifu.,Li, Weizhen.,Lin, Lili.,...&Ma, Ding.(2017).Tuning the Selectivity of Catalytic Carbon Dioxide Hydrogenation over Iridium/Cerium Oxide Catalysts with a Strong Metal-Support Interaction.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION.
MLA	Li, Siwei,et al."Tuning the Selectivity of Catalytic Carbon Dioxide Hydrogenation over Iridium/Cerium Oxide Catalysts with a Strong Metal-Support Interaction".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017).