Effect of Al2O3 doping on the structure and performance of an Al2O3/Fe2O3 catalyst for mercury oxidation

doi:10.1016/j.jes.2019.11.003

	Effect of Al2O3 doping on the structure and performance of an Al2O3/Fe2O3 catalyst for mercury oxidation
	Liu, Ruihui 1,3,4; Zhu, Tingyu 2; Tong, Li 5; Xu, Wenqing 2
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2020-04-01
卷号	90 页码:138-145
关键词	Mercury Catalytic oxidation Fe2O3 Al2O3 Thermal stability
ISSN号	1001-0742
DOI	10.1016/j.jes.2019.11.003
英文摘要	In this study, the thermal stability of a Fe2O3 catalyst for mercury oxidation was significantly improved by doping with Al2O3. After 1 hr, the catalyst doped with 10 wt.% Al2O3 still exhibited a mercury conversion efficiency of 70.9%, while the undoped sample even lost its catalytic activity. Doping with Al2O3 retarded the collapse of the catalyst mesoporous structure during high-temperature calcination, and the doped samples maintained a higher specific surface area, smaller pore size, and narrower pore size distribution. Transmission electron microscope images revealed that after calcination at 350 degrees C, the average size of the catalyst grains in Fe2O3 was 23.4 nm; however, the corresponding values for 1%Al2O3/Fe2O3, 3%Al2O3/Fe2O3, and 10%Al2O3/Fe2O3 were only 13.3, 7.1, and 4.7 nm, respectively. Results obtained from X-ray diffraction and thermogravimetry coupled with differential scanning calorimetry confirmed that doping with Al2O3 also retards the crystallization of the catalysts at high temperature, constraining catalyst grains to a smaller size. (C) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
资助项目	National Key Research and Development Program of China[2017YFC0210501] ; National Natural Science Foundation of China[21607009] ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment[NEL-KF-201902]
WOS关键词	PHASE ELEMENTAL MERCURY ; MODIFIED SCR CATALYST ; FLUE-GAS ; MANGANESE OXIDES ; HG-0 OXIDATION ; METAL-OXIDES ; REMOVAL ; FE2O3 ; ADSORPTION ; MN
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000513920600014
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Engineering Laboratory for Flue Gas Pollutants Control Technology and Equipment
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/39629]
专题	中国科学院过程工程研究所
通讯作者	Xu, Wenqing
作者单位	1.Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Res Ctr Proc Pollut Control, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 3.Northeastern Univ Qinhuangdao, Sch Resources & Mat, Qinhuangdao 066004, Hebei, Peoples R China 4.Key Lab Dielect & Electrolyte Funct Mat Hebei Pro, Qinhuangdao 066004, Hebei, Peoples R China 5.Beijing Municipal Inst Lab Protect, Dept Air Pollut Control, Beijing 100054, Peoples R China
推荐引用方式 GB/T 7714	Liu, Ruihui,Zhu, Tingyu,Tong, Li,et al. Effect of Al2O3 doping on the structure and performance of an Al2O3/Fe2O3 catalyst for mercury oxidation[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2020,90:138-145.
APA	Liu, Ruihui,Zhu, Tingyu,Tong, Li,&Xu, Wenqing.(2020).Effect of Al2O3 doping on the structure and performance of an Al2O3/Fe2O3 catalyst for mercury oxidation.JOURNAL OF ENVIRONMENTAL SCIENCES,90,138-145.
MLA	Liu, Ruihui,et al."Effect of Al2O3 doping on the structure and performance of an Al2O3/Fe2O3 catalyst for mercury oxidation".JOURNAL OF ENVIRONMENTAL SCIENCES 90(2020):138-145.