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题名: Influence of precipitation temperature on phase composition of precursor of CuO/ZnO/Al2O3 catalyst and its catalytic activity for water gas shift reaction
作者: Fang, DR;  Liu, ZM;  Yang, Y;  Meng, SH;  Suo, ZH;  Chen, F
关键词: copper oxide ;  zinc oxide ;  alumina ;  mixed oxide catalyst ;  precursor ;  phase composition ;  carbon monoxide ;  water gas shift reaction
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2004-11-01
卷: 25, 期:11, 页:920-924
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The CuO/ZnO/Al2O3 catalyst was prepared by the Cu-Zn-Al ternary co-current coprecipitation method at pH 7. The effect of precipitation temperature on the phase composition of the catalyst precursor was studied by XRD, DTG, TPR, N-2 adsorption and N2O titration methods. The catalyst activity for the water gas shift reaction (WGSR) was tested in a differential fixed-bed reactor at atmospheric pressure. The results demonstrated that Cu2CO3(OH)(2), (Cu,Zn)(2)CO3(OH)(2) and (Cu,Zn)(6)Al-2(OH)(16)CO3.4H(2)O were the main phases in the catalyst precursor and the amounts of the latter two phases increased with increasing precipitation temperature. In the calcined catalyst, CuO-ZnO solid solution formed and its amount increased as the precipitation temperature increased. No spinel-like phase of (Cu,Zn)Al2O4 was detected by XRD in the calcined catalyst. There was a linear relationship between the low-temperature (200 degreesC) catalytic activity for WGSR and the Cu surface area of the catalyst. WGSR was a structure-insensitive reaction.
关键词[WOS]: METHANOL SYNTHESIS CATALYSTS ;  COPRECIPITATION METHODS ;  STRUCTURE-SENSITIVITY ;  SELECTIVE PRODUCTION ;  OXIDE CATALYSTS ;  REFORMED FUELS ;  CO REMOVAL ;  OXIDATION ;  HYDROGEN ;  CU
语种: 英语
WOS记录号: WOS:000225816000015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139588
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.Yantai Univ, Inst Appl Catalysis, Shandong 264005, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Fang, DR,Liu, ZM,Yang, Y,et al. Influence of precipitation temperature on phase composition of precursor of CuO/ZnO/Al2O3 catalyst and its catalytic activity for water gas shift reaction[J]. CHINESE JOURNAL OF CATALYSIS,2004,25(11):920-924.
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