Enhanced Catalytic Denitrification Performance of Ruthenium-based Catalysts by Hydrogen Spillover from a Palladium Promoter

doi:10.1016/j.jcis.2021.11.018

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	Enhanced Catalytic Denitrification Performance of Ruthenium-based Catalysts by Hydrogen Spillover from a Palladium Promoter
	Kong, Xiao 2; Xiao, Jun 1; Chen, Aitao 2; Chen, Long 2; Li, Chao 2; Feng, Liu 2; Ren, Xiaoli 2; Fan, Xinzhuang 1; Sun, Wuzhu 2; Sun, Zhongti 3
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2022-02-15
卷号	608 页码:2973-2984
关键词	Catalytic denitrification Ru-based catalyst Surface oxidation Hydrogen spillover
ISSN号	0021-9797
DOI	10.1016/j.jcis.2021.11.018
通讯作者	Sun, Wuzhu(sunwuzhu@sdut.edu.cn) ; Sun, Zhongti(zts1989@mail.ustc.edu.cn)
英文摘要	Catalytic denitrification, a promising technology for nitrate removal, is increasingly limited by the rising price of Pd. Replacing Pd with less-expensive Ru would significantly reduce the cost; however, Ru-based catalysts have been reported to perform inconsistently in denitrification applications, making their replacement prospects unclear. Herein, the surface oxidation of Ru catalysts was confirmed to be a key factor that inhibits activity. A series of Ru-Pd catalysts containing small amounts of Pd (0.5 wt%) was developed to eliminate the Ru surface-oxide layer through the spillover of hydrogen atoms activated on the Pd promoter. Ru-Pd/Fe3O4 exhibited superior catalytic activity to Ru-Pd/C and Ru-Pd/Al2O3 because the reducible carrier (Fe3O4) has a lower resistance to hydrogen spillover and diffusion, as determined experimentally and supported by density functional theory calculations. This study developed a method that eliminates ruthenium surface oxides in situ and restores its denitrification activity, further reducing the barrier to Ru replacing Pd in catalytic aqueous denitrification. (c) 2021 Elsevier Inc. All rights reserved.
资助项目	National Natural Science Foundation of China[52070124] ; National Natural Science Foundation of China[51502305] ; State Key Laboratory of Heavy Oil Processing in China University of Petroleum[Y7F1911191]
WOS研究方向	Chemistry
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000749890200006
资助机构	National Natural Science Foundation of China ; State Key Laboratory of Heavy Oil Processing in China University of Petroleum
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173557]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sun, Wuzhu; Sun, Zhongti
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Shandong Univ Technol, Sch Mat Sci & Engn, 266 Xincun West Rd, Zibo, Shandon 255000, Peoples R China 3.Jiangsu Univ, Sch Mat Sci & Engn, 301 Xuefu Rd, Zhenjiang 212013, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Kong, Xiao,Xiao, Jun,Chen, Aitao,et al. Enhanced Catalytic Denitrification Performance of Ruthenium-based Catalysts by Hydrogen Spillover from a Palladium Promoter[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2022,608:2973-2984.
APA	Kong, Xiao.,Xiao, Jun.,Chen, Aitao.,Chen, Long.,Li, Chao.,...&Sun, Zhongti.(2022).Enhanced Catalytic Denitrification Performance of Ruthenium-based Catalysts by Hydrogen Spillover from a Palladium Promoter.JOURNAL OF COLLOID AND INTERFACE SCIENCE,608,2973-2984.
MLA	Kong, Xiao,et al."Enhanced Catalytic Denitrification Performance of Ruthenium-based Catalysts by Hydrogen Spillover from a Palladium Promoter".JOURNAL OF COLLOID AND INTERFACE SCIENCE 608(2022):2973-2984.