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Doping effect of Al2O3 and CeO2 on Fe2O3 support for gold catalyst in CO oxidation at low-temperature
Liu, Ruihui1,2; Gao, Nansha6; Zhen, Feng7; Zhang, Yuyan2; Mei, Lin3,4,5; Zeng, Xiaowei2,3,4,5
2013-06-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
Volume225Pages:245-253
AbstractAl2O3/CeO2 doped Fe2O3 support was synthesized by co-precipitation method, based on which gold was loaded by deposition-precipitation. Both the catalytic activity and thermal stability of the gold catalyst were enhanced significantly by Al2O3/CeO2 doping. The catalyst loaded with 1.0% Au and calcined at 180 degrees C converted CO completely at -8.9 degrees C, while the sample modified by Al2O3/CeO2 showed a 100% CO conversion at -20.1 degrees C. Characterization techniques, such as N-2 adsorption-desorption, X-ray diffraction (XRD), transmission electron microscopic (TEM), thermogravimetry-differential scanning calorimeter (TG-DSC) and CO2 temperature programmed desorption (CO2-TPD) were employed to investigate the structure and surface morphology of the catalysts. Al2O3/CeO2 doping retarded the mesoporous structures of the catalysts from collapse during the calcination at high temperature, which thus maintained higher specific surface area and lower pore size. After being calcined at 500 degrees C, the average diameter of the gold particles in Au/Fe2O3 was 7.0 nm and the sizes of support grains ranged from 50 to 100 nm. However, the average diameter of the gold particles in Au/Al2O3/CeO2/Fe2O3 was only 5.1 nm and the sizes of support grains ranged from 10 to 30 nm. Gold loaded on the Fe2O3 support by the doping of Al2O3/CeO2 have better catalytic activity for CO oxidation. Crown Copyright (c) 2013 Published by Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordGold Catalyst Ceo2 Al2o3 Sintering Co Oxidation
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cej.2013.03.118
WOS Subject ExtendedEngineering
WOS KeywordGOLD/IRON-OXIDE CATALYSTS ; CARBON-MONOXIDE ; THERMAL-STABILITY ; AU/TIO2 CATALYSTS ; NANOPARTICLES ; FE ; NANOCATALYSTS ; DEACTIVATION ; PERFORMANCE ; ADSORPTION
Indexed BySCI
Language英语
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS IDWOS:000321313800029
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10133
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Res Ctr Proc Pollut Control, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Northeastern Univ, Sch Resources & Mat, Qinhuangdao Branch, Qinhuangdao 066004, Peoples R China
3.Tsinghua Univ, Sch Life Sci, Beijing 100084, Peoples R China
4.Tsinghua Univ, Shenzhen Key Lab Gene & Antibody Therapy, Minist Prov Jointly Constructed Base State Key La, Ctr Biotech & Biomed, Shenzhen 518055, Peoples R China
5.Tsinghua Univ, Grad Sch Shenzhen, Div Life & Hlth Sci, Shenzhen 518055, Peoples R China
6.Chinese Acad Sci, Shenzhen Inst Adv Technol, Res Ctr Human Tissues & Organs Degenerat, Shenzhen 518055, Peoples R China
7.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Liu, Ruihui,Gao, Nansha,Zhen, Feng,et al. Doping effect of Al2O3 and CeO2 on Fe2O3 support for gold catalyst in CO oxidation at low-temperature[J]. CHEMICAL ENGINEERING JOURNAL,2013,225:245-253.
APA Liu, Ruihui,Gao, Nansha,Zhen, Feng,Zhang, Yuyan,Mei, Lin,&Zeng, Xiaowei.(2013).Doping effect of Al2O3 and CeO2 on Fe2O3 support for gold catalyst in CO oxidation at low-temperature.CHEMICAL ENGINEERING JOURNAL,225,245-253.
MLA Liu, Ruihui,et al."Doping effect of Al2O3 and CeO2 on Fe2O3 support for gold catalyst in CO oxidation at low-temperature".CHEMICAL ENGINEERING JOURNAL 225(2013):245-253.
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