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Chemical-Looping Reforming of Methane Using Iron Based Oxygen Carrier Modified with Low Content Nickel
Wei, Guoqiang; He, Fang; Huang, Zhen; Zhao, Kun; Zheng, Anqing; Li, Haibin
2014-12-01
Source PublicationCHINESE JOURNAL OF CHEMISTRY
Volume32Issue:12Pages:1271-1280
AbstractFe2O3/Al2O3 and Fe2O3/Al2O3 modified by low content of Ni (below 2% in weight) oxygen carriers were prepared by mechanical mixing and impregnation method. The synthesized oxygen carriers were characterized by means of X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning electron microscopy (SEM), BET-surface area and temperature programmed reduction (TPR). Besides, redox cyclic reactivity and the performance of chemical looping reforming of methane of the oxygen carriers were studied in a thermal gravimetrical analysis (TGA) and fixed bed at 850 degrees C. It was observed that the redox reactivity of the oxygen carriers is improved by Ni addition because synergic effect may occur between NiO and Fe2O3/Al2O3 to form NiFe2O4 and NiAl2O4 spinel phases. However, the improvement was not apparent as Ni addition reached 1 wt% or more because more nickel loaded resulted in methane decomposition into H-2 and carbon leading to carbon deposition. The SEM and BET analysis showed that NiFe2O4 and NiAl2O4 particles dispersed into the pores of the Fe2O3/Al2O3 particles in the course of preparation. In addition, the resistance to sintering of the modified samples increased with the Ni addition increasing. The results of successive redox cycles showed that the Ni modified Fe2O3/Al2O3 oxygen carriers have good regenerability. With integration of reactivity and carbon deposition, the content 1.04 wt% of nickel doping was an optimal amount in the three modified samples.
SubtypeArticle
KeywordMethane Chemical-looping Reforming Chemical-looping Reforming Oxygen Carrier Iron Low Content Nickel
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/cjoc.201400563
WOS Subject ExtendedChemistry
WOS KeywordCIRCULATING FLUIDIZED-BED ; SYNTHESIS GAS ; CATALYTIC-PROPERTIES ; HYDROGEN-PRODUCTION ; COMBUSTION ; OXIDES ; FE ; CU ; PEROVSKITES ; ANTHRACITE
Indexed BySCI
Language英语
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000346703500013
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Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10688
Collection中国科学院广州能源研究所
AffiliationChinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wei, Guoqiang,He, Fang,Huang, Zhen,et al. Chemical-Looping Reforming of Methane Using Iron Based Oxygen Carrier Modified with Low Content Nickel[J]. CHINESE JOURNAL OF CHEMISTRY,2014,32(12):1271-1280.
APA Wei, Guoqiang,He, Fang,Huang, Zhen,Zhao, Kun,Zheng, Anqing,&Li, Haibin.(2014).Chemical-Looping Reforming of Methane Using Iron Based Oxygen Carrier Modified with Low Content Nickel.CHINESE JOURNAL OF CHEMISTRY,32(12),1271-1280.
MLA Wei, Guoqiang,et al."Chemical-Looping Reforming of Methane Using Iron Based Oxygen Carrier Modified with Low Content Nickel".CHINESE JOURNAL OF CHEMISTRY 32.12(2014):1271-1280.
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