Phase-separated Ce–Co–O catalysts for CO oxidation

doi:10.1016/j.ijhydene.2020.02.210

	Phase-separated Ce–Co–O catalysts for CO oxidation
	Zhang, Ruishi 3; Wang, Junchao 1,2; Zhu, Xiuhui 3; Liu, Xiaoyuan 1; Liu, Haiyan 3; Zhou, Yang 1; Dong, Shizhi 2; La, Peiqing 4; Yao, Jinlei 5; Liu, Baodan 1
	2020-04-28
关键词	Cerium oxide Chemical analysis Chemical industry Costs Oxidation Pollution Porous materials Precious metals Spray pyrolysis TemperatureChemical purity Environmental pollutions Environmental-friendly Facile synthesis Low-temperature CO oxidation Microstructure analysis Ultrasonic spray pyrolysis Vehicle exhausts
卷号	45
期号	23
DOI	10.1016/j.ijhydene.2020.02.210
页码	12777-12786
英文摘要	As a major gas pollutant, the control of CO gas emission from chemical industry and vehicle exhausts has aroused global attention in the past years and it is extremely essential to develop efficient, low-cost and environmental friendly catalysts for CO conversion and removal. In this work, we report the facile synthesis of Ce–Co–O catalysts through a simple ultrasonic spray pyrolysis process and investigate their application for low-temperature CO oxidation. The Ce–Co–O catalysts comprising of separated CeO2 and Co3O4 phases show superior CO oxidation capability below 473 K (200 °C) without the assistance of any other co-catalyst or noble metal. With the increase of Co3O4 concentration, the CO oxidation temperature of Ce–Co–O catalysts decreases quickly and reaches a complete conversion temperature of 410 K (137 °C) in the case of the optimized Co content. Microstructure analysis using high-resolution transmission electron microscope reveals that the tiny CeO2 and Co3O4 phases assembled into porous particles are well crystallized and show high chemical purity. The porous feature of Ce–Co–O catalysts synthesized from feasible ultrasonic spray pyrolysis makes them more competitive and promising towards gaseous environmental pollution processing including CO oxidation, TWCs, SCR, etc. © 2020 Hydrogen Energy Publications LLC
会议录	International Journal of Hydrogen Energy
会议录出版者	Elsevier Ltd
语种	英语
ISSN号	03603199
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000526115700013
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/132697]
专题	材料科学与工程学院
作者单位	1.Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research (IMR), Chinese Academy of Sciences (CAS), No. 72 Wenhua Road, Shenyang; 110016, China; 2.School of Material Science and Engineering, Liaoning Technical University, No. 47, Zhonghua Road, Fuxin; 123000, China; 3.Department of Chemistry and Material Engineering, Yingkou Institute of Technology, No. 46, Bowen Road, Yingkou; 115014, China; 4.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 5.Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Mathematics and Physics, Suzhou University of Science and Technology, Suzhou; 215009, China
推荐引用方式 GB/T 7714	Zhang, Ruishi,Wang, Junchao,Zhu, Xiuhui,et al. Phase-separated Ce–Co–O catalysts for CO oxidation[C]. 见:.