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题名: Preparation of alumina-supported nobel metal iridium catalysts and their catalytic performance for methanol decomposition
作者: Zhang Xiongwei;  Chu Wei;  Wang Xiaodong;  Yang Weishen;  Sheng Shishan;  Zhang Tao
关键词: iridium ;  alumina ;  supported catalyst ;  zirconia ;  lanthana ;  magnesia ;  promoter ;  methanol decomposition
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2006-10-01
卷: 27, 期:10, 页:863-867
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 alumina-supported noble metal iridium catalysts were prepared by the impregnation method. The effect of additive Zro(2) center dot La2O3, or MgO on the catalytic performance was investigated. The supported catalysts were used for the methanol decomposition reaction and were characterized by X-ray photoelectron spectroscopy, temperature-programmed reduction (TPR), temperature-programmed desorption of hydrogen (H-2-TPD), and temperature-programmed desorption of carbon monoxide. The promoter addition could remarkably improve the hydrogen selectivity and CO selectivity of Ir/Al2O3 catalyst in the methanol decomposition. La2O3 and ZrO2 were also good promoters for enhancing the methanol conversion. Both hydrogen and CO were held strongly by the MgO-modified Ir/Al2O3 catalyst, which was not favorable for the methanol conversion. The results of TPR and H-2-TPD showed that hydrogen spillover existed in the alumina-supported iridium catalyst. The addition of one of the three promoters could significantly enhance the hydrogen spillover effect.
关键词[WOS]: COPPER-BASED CATALYSTS ;  GLOW-DISCHARGE PLASMA ;  SELECTIVE HYDROGENATION ;  PARTIAL OXIDATION ;  CARBON NANOTUBES ;  TEMPERATURE ;  ACETYLENE ;  STORAGE ;  SYNGAS ;  OXIDE
语种: 英语
WOS记录号: WOS:000241931800007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140276
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.Sichuan Univ, Dept Chem Engn, Chengdu 610065, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Zhang Xiongwei,Chu Wei,Wang Xiaodong,et al. Preparation of alumina-supported nobel metal iridium catalysts and their catalytic performance for methanol decomposition[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(10):863-867.
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