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题名: Interaction of NiO with gamma-Al2O3 supporter of NiO/gamma-Al2O3 catalysts
作者: Zhang, YH;  Xiong, GX;  Sheng, SS;  Liu, SL;  Yang, WS
关键词: sol-gel method ;  NiO/gamma-Al2O3 ;  Ni species ;  interaction between NiO and gamma-Al2O3
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 1999-08-01
DOI: 10.3866/PKU.WHXB19990813
卷: 15, 期:8, 页:735-741
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A series of NiO/ gamma-Al2O3 catalysts were prepared by sol-gel method. The effects of the methods of preparation, the nickel content and the calcined temperature on the structure and existing forms of nickel species of NiO/ gamma-Al2O3 catalysts were investigated using XRD, XPS and TPR, The results suggested that the interaction between NiO and gamma-Al2O3 affected the oxidic nickel speies. Nickel oxide was found to appear in the catalysts in three forms, as "free", "dispersed" and "fixed" oxides. The occurrence of the fixed form of the oxide in the catalysts was connected with the formation of nickel aluminate. The effect of the reaction of these different nickel species on the performance of the catalysts was dicussed. For the catalysts prepared by sol-gel method, after calcined at higher temperature, nickel species present as a spinel-like structure solid solution, which could restrain nickel loss and sintering and improve the thermal stability of catalysts.
关键词[WOS]: NICKEL
语种: 英语
WOS记录号: WOS:000082370900013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138539
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, YH,Xiong, GX,Sheng, SS,et al. Interaction of NiO with gamma-Al2O3 supporter of NiO/gamma-Al2O3 catalysts[J]. ACTA PHYSICO-CHIMICA SINICA,1999,15(8):735-741.
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