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Iron removal and titanium dioxide support recovery from spent V2O5-WO3/ TiO2 catalyst

文献类型：期刊论文

作者Liu, Jinlong1,2; Wang, Chenye1; Wang, Xingrui1; Li, Huiquan1,2; Zhao, Chen1
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2022-11-15
卷号301页码:8
ISSN号1383-5866
关键词Iron dissolution TiO2 recycling Spent SCR catalyst Ascorbic acid
DOI10.1016/j.seppur.2022.121934
英文摘要Iron seriously affects the quality of TiO2 support recovered from spent selective catalytic reduction (SCR) catalyst. In this paper, the iron removal and TiO2 support recovery from spent SCR catalyst were studied. The experiment results suggested that iron exists on the surface and bulk structure of a spent SCR catalyst. The iron deposited on the surface of the spent SCR catalyst was removed by ultrasonic cleaning. The iron remaining in the bulk structure of the spent SCR catalyst was primarily Fe(III) and was adequately removed by NaOH activation and acid washing. The NaOH activation process considerably increased the specific surface area of the spent SCR catalyst. Subsequently, iron was efficiently dissolved through the synergistic effect of sulfuric acid and ascorbic acid. Sulfuric acid dissolved iron in the form of Fe3+, and ascorbic acid promoted iron dissolution by reducing Fe3+ to Fe2+. After the recovery process, 97.1% of the iron in the spent SCR catalyst was removed, and anatase TiO2 was recovered from the spent SCR catalyst. The recovered anatase TiO2 can be used as support material to produce fresh SCR catalyst.
WOS关键词SCR CATALYST ; ASCORBIC-ACID ; OXALIC-ACID ; DISSOLUTION ; REDUCTION ; REGENERATION ; VANADIUM ; OXIDES
资助项目National Key Research and Devel-opment Program of China ; National Natural Science Foundation of China ; [2019YFC1907502] ; [51904287]
WOS研究方向Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000874541400003
资助机构National Key Research and Devel-opment Program of China ; National Natural Science Foundation of China
源URL[http://ir.ipe.ac.cn/handle/122111/55334]  
专题中国科学院过程工程研究所
通讯作者Wang, Chenye
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met Reso, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Jinlong,Wang, Chenye,Wang, Xingrui,et al. Iron removal and titanium dioxide support recovery from spent V2O5-WO3/ TiO2 catalyst[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2022,301:8.
APA Liu, Jinlong,Wang, Chenye,Wang, Xingrui,Li, Huiquan,&Zhao, Chen.(2022).Iron removal and titanium dioxide support recovery from spent V2O5-WO3/ TiO2 catalyst.SEPARATION AND PURIFICATION TECHNOLOGY,301,8.
MLA Liu, Jinlong,et al."Iron removal and titanium dioxide support recovery from spent V2O5-WO3/ TiO2 catalyst".SEPARATION AND PURIFICATION TECHNOLOGY 301(2022):8.

入库方式： OAI收割

来源：过程工程研究所

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