Synthesis of C_<2+> Alcohols from Syngas over Supported Metal Catalysts Containing Small Amounts or Rh

少量Rh负载型金属催化剂上合成气合成C_<2>醇

基本信息

  • 批准号:
    05650784
  • 负责人:
  • 金额:
    $ 1.15万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1993
  • 资助国家:
    日本
  • 起止时间:
    1993 至 1994
  • 项目状态:
    已结题

项目摘要

Monometallic catalysts, Ir and Mo, were extremely low in activity and yielded hydrocarbon as main products. On the other hand, Ir-Mo bimetallic catalyst exhibited an high activity, and an increase in the selectivity to the C_<2+> alcohols was observed on the bimetallic catalyst. Mo dioxide was formed in the Mo monometallic catalyst while Mo metal was formed in the Ir-Mo catalyst. This suggests that Mo was reduced with hydrogen species migrated from Ir metal. From the TPR experiment, it was suggested that CO adsorbed on Ir also migrates onto Mo, and that CO and hydrogen reacted over Mo metal.It was found that Ir-Mo-Rh supported on silica containing small amounts of Rh exhibited much higher activity for Co hydrogenation than Ir-Mo bimetallic catalyst. The selectivity to various alcohols did not change very much upon the addition of Rh. The activity was greatly affected by the impregnation procedure of the metals in the catalyst preparation. The increase of selectivity to C_<2+> alcohols was investigated, and it was found that use of zirconia support and the addition of Li enhanced the selectivity of C_<2+> alcohols.We proposed a novel preparation method of supported metal catalysts using microemulsions. It was found that silica-supported Rh catalyst prepared by this method had extremely small rhodium particles, and that their size distribution was appreciably narrow. This catalyst exhibited much higher activity for the CO hydrogenation than the conventional catalysts prepared by impregnation, and showed high selectivity to C_<2+> alcohols as well as the conventional catalysts.
铱、钼等钼系催化剂活性极低,主要产物为烃类。而Ir-Mo双金属催化剂具有较高的活性,其C2+醇的选择性明显提高。在钼氧化物催化剂中形成二氧化钼,而在Ir-Mo催化剂中形成Mo金属。这表明Mo被从Ir金属迁移的氢物质还原。TPR实验表明,CO在Ir上的吸附也迁移到Mo上,CO和H2在金属Mo上发生反应,发现负载在含有少量Rh的SiO2上的Ir-Mo-Rh催化剂具有比Ir-Mo-Rh催化剂高得多的CO加氢活性。加入Rh后,对各种醇的选择性没有太大变化。催化剂制备过程中金属的浸渍方式对催化剂的活性有很大影响。考察了负载型金属催化剂对C2+醇选择性的影响,发现负载型金属催化剂中添加Li和负载型金属载体可以提高C2+醇选择性。结果表明,用该方法制备的二氧化硅负载铑催化剂具有极小的铑颗粒,并且它们的尺寸分布相当窄。该催化剂对CO加氢反应的活性远高于浸渍法制备的催化剂,对C2+醇的选择性也高于浸渍法制备的催化剂。

项目成果

期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Takeshi Matsumoto: "Catalytic Hydrogenation of Carbon Monoxide over Silica-supported Ir-Mo-Rh Catalyst" Catalysis Letters. 24. 391-394 (1994)
Takeshi Matsumoto:“二氧化硅支撑的 Ir-Mo-Rh 催化剂上一氧化碳的催化氢化”催化快报。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Masahiro Kishida: "Novel Preparation of Supported Catalysts Using Microemulsions and Their Catalytic Performance" Proceedings of Japan-FSU Catalysis Seminar'94. 178-179 (1994)
Masahiro Kishida:“利用微乳液新型制备负载型催化剂及其催化性能”日本-FSU 催化研讨会94 论文集。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Takeshi Matsumoto: "Catalytic Hydrogenation of Carbon Monoxide over Silica-supported Ir-Mo-Rh catalyst" Catalysis Letters. 24. 391-394 (1993)
Takeshi Matsumoto:“二氧化硅支撑的 Ir-Mo-Rh 催化剂上一氧化碳的催化氢化”催化快报。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

KISHIDA Masahiro其他文献

KISHIDA Masahiro的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('KISHIDA Masahiro', 18)}}的其他基金

Kinetic Study on Superior Performance of Silica-Coated Cathode Catalysts for PEFC
PEFC用二氧化硅包覆正极催化剂优异性能的动力学研究
  • 批准号:
    23360350
  • 财政年份:
    2011
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Analysis of kinetics in closed nano-scale spacse and the formation of nanocomposites
封闭纳米尺度空间的动力学分析和纳米复合材料的形成
  • 批准号:
    19360361
  • 财政年份:
    2007
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Novel preparation method for supported metal catalysts with high resistance to sintering
高抗烧结负载型金属催化剂的制备新方法
  • 批准号:
    12450328
  • 财政年份:
    2000
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了