Formation of New Phase at the Metal/Oxide Interface and Its Catalyses

金属/氧化物界面新相的形成及其催化

基本信息

  • 批准号:
    02453073
  • 负责人:
  • 金额:
    $ 4.61万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
  • 财政年份:
    1990
  • 资助国家:
    日本
  • 起止时间:
    1990 至 1992
  • 项目状态:
    已结题

项目摘要

1. Preparation of SiO_2 Supported Double Oxides of Group VIII MetalsChemical mixing methods as well as thermal ones were investigated intensively to prepare the finely dispersed single phase double oxides of Rh, Ni and Fe. The methods were established for several kinds of supported oxides such as RhNbO_4, RhVO_4, Mn-Rh_2O_4, Mo-Rh_2O_6, NiAl_2O_4, NiTiO_3, NiTa_2O_6, Ni_2V_2O_8, NiNb_2O_6, Fe-NbO_4, FeAl_2O_4 and AlNbO_4.2. Characteristics of Supported Double Oxides of Group VIII Metals on CatalysesChemical behaviors of all these oxides during reduction/oxidation were also examined. The so-called decoration model on metal-oxide interactions was found to be effective generally on these double oxide systems.SMSI behaviors of these double oxides were studied on several catalyses, leading to the findings of many interesting facts, e.g., extreme acceleration of hydorformylation activity of ethylene by SMSI, extremely high catalytic activities of MnRh_2O_4 and MoRh_2O_6 on hydrogenolysis, and so on.3. Synthetic Gas Production by Partial Oxidation of MethaneThe production of synthetic gas by catalytic partial oxidation of methane using conventional supported metal catalysts was studied from the viewpoints of comparisons of catalytic activities among metals, an elucidation of reaction mechanism, and so on. The reaction pathways were confirmed, that is, the complete oxidation of CH_4 to CO_2/H_2O proceeds at first, and then the reforming of CH_4 by CO_2/H_2O does to give CO/H_2. The support effect of Al_2O_3 was distinguished through activation of CO_2. It was able to lower the reaction temper-ature by the application of alternative pulse reaction system, i.e., oxidation of metals and their reduction with CH_4.
1. 采用化学混合法和热混合法制备了分散良好的Rh、Ni、Fe单相双氧化物。建立了几种负载氧化物(RhNbO_4、RhVO_4、Mn-Rh_2O_4、Mo-Rh_2O_6、NiAl_2O_4、NiTiO_3、NiTa_2O_6、Ni_2V_2O_8、NiNb_2O_6、Fe-NbO_4、FeAl_2O_4和AlNbO_4.2)的制备方法。八族金属负载双氧化物在催化剂上的特性研究了这些氧化物在还原/氧化过程中的化学行为。研究发现,所谓的金属-氧化物相互作用的装饰模型在这些双氧化物体系中普遍有效。研究了这些双氧化物在几种催化剂上的SMSI行为,发现了许多有趣的事实,如SMSI极大地加速了乙烯的羟甲酰化活性,MnRh_2O_4和MoRh_2O_6对氢解具有极高的催化活性等。从金属间催化活性的比较、反应机理的阐明等方面,对传统负载型金属催化剂催化甲烷部分氧化制合成气进行了研究。确定了反应途径,即先由CH_4完全氧化生成CO_2/H_2O,再由CO_2/H_2O使CH_4重整生成CO/H_2。通过CO_2的活化来区分Al_2O_3的支撑作用。采用替代脉冲反应体系,即将金属氧化后再用CH_4还原,可以降低反应温度。

项目成果

期刊论文数量(60)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
H.Kuramochi, K.Kunimori, T.Uchijima, H.Kondoh, H.Shindo, M.Kaise, C.Nishihara, and H.Nozoye: ""Structure-Sensitive Decomposition of Hydrocarbons on Ni(755)"" Surface Science. 251/252. 926-930 (1991)
H.Kuramochi、K.Kunimori、T.Uchijima、H.Kondoh、H.Shindo、M.Kaise、C.Nishihara 和 H.Nozoye:“Ni(755) 上碳氢化合物的结构敏感分解”表面科学
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    0
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  • 通讯作者:
Y.G.Yin, T.Wakasugi, H.Shindo, T.Uchijima, and K.Kunimori: ""Preparation of Niobates of Rhodium and Nickel by Chemical Mixing Method"" Bull.Chem.Soc.of Japan. 65(11). 3218-3220 (1992)
Y.G.Yin、T.Wakasugi、H.Shindo、T.Uchijima 和 K.Kunimori:““通过化学混合法制备铑和镍的铌酸盐””Bull.Chem.Soc.of Japan。
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    0
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K.Kunimori: "Preparation of Niobates of Rh and Ni and Their Catalytic Behavions during Calcination and Reduction Treatments" Catalysis Today. (1993)
K.Kunimori:“Rh 和 Ni 的铌酸盐的制备及其在煅烧和还原处理过程中的催化行为”《今日催化》。
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    0
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Z.Hu, K.Kunimori, and T.Uchijima: ""Interaction of Hyrdogen and Oxygen with Niobia-Supported and Niobia-Promoted Rhodium Catalysts"" Applied Catalysis. 69. 253-268 (1991)
Z.Hu、K.Kunimori 和 T.Uchijima:“氢和氧与氧化铌支持和氧化铌促进的铑催化剂的相互作用””应用催化。
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  • 影响因子:
    0
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K.Kunimori, S.Ito, and T.Uchijima: ""On the Sulfur Aided Metal-Support Interaction in alumina-supported Pt Catalysts"" J.Catalysis. 130. 662-667 (1991)
K.Kunimori、S.Ito 和 T.Uchijima:“关于氧化铝负载的 Pt 催化剂中硫辅助的金属-载体相互作用”J.Catalysis。
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    0
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UCHIJIMA Toshio其他文献

UCHIJIMA Toshio的其他文献

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{{ truncateString('UCHIJIMA Toshio', 18)}}的其他基金

Standardization of Catalyst Preparations using Reference Catalysts
使用参考催化剂标准化催化剂制备
  • 批准号:
    07305035
  • 财政年份:
    1995
  • 资助金额:
    $ 4.61万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Highly-Dispersed and Highly-Functional Ni Electrode Catalyst Prepared by a New CVI Method for Application to Molten Salt Type Fuel Cell
新CVI法制备高分散高功能镍电极催化剂应用于熔盐型燃料电池
  • 批准号:
    62550575
  • 财政年份:
    1987
  • 资助金额:
    $ 4.61万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Metal-Support Interaction in Oxide-Supported Fine Metal Particles
氧化物负载细金属颗粒中的金属负载相互作用
  • 批准号:
    60470077
  • 财政年份:
    1985
  • 资助金额:
    $ 4.61万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)

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    2154819
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