中大機構典藏-NCU Institutional Repository-提供博碩士論文、考古題、期刊論文、研究計畫等下載:Item 987654321/26750
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 80990/80990 (100%)
造访人次 : 41649664      在线人数 : 1399
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/26750


    题名: HYDROGENATION ACTIVITY AND SELECTIVITY OF COBALT BORIDES
    作者: CHEN,YZ;WU,KJ
    贡献者: 化學工程與材料工程學系
    关键词: GAS-PHASE HYDROGENATION;CATALYTIC-HYDROGENATION;NICKEL BORIDE;CARBON-MONOXIDE;SODIUM-BOROHYDRIDE;ORGANIC-SYNTHESIS;METAL-CATALYSTS;P-2 NICKEL;SILICA;METHANATION
    日期: 1991
    上传时间: 2010-06-29 17:35:53 (UTC+8)
    出版者: 中央大學
    摘要: Hydrogenation of monofunctional (olefinic and carbonyl) and bifunctional (alpha, beta-unsaturated aldehyde compounds have been studied over cobalt borides. The cobalt borides P-1Co and P-2WCo were prepared by reducing cobalt acetate with sodium borohydride in aqueous and 50% ethanolic media, respectively. P-1Co is more active than P-2WCo for hydrogenation of olefinic groups, whereas P-1Co is less active for carbonyl groups. Chromium and molybdenum effectively promote P-1Co and P-2WCo in carbonyl group reduction, but chromium depresses P-1Co and P-2WCo on olefinic group reduction. P-1Co and P-2WCo can selectively reduce benzene to cyclohexene and alpha,beta-unsaturated aldehyde to unsaturated alcohol, reactions that are difficult on other heterogeneous catalysts.
    關聯: APPLIED CATALYSIS
    显示于类别:[化學工程與材料工程研究所] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    index.html0KbHTML441检视/开启


    在NCUIR中所有的数据项都受到原著作权保护.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 隱私權政策聲明