王寰,李伟,张明慧,陶克毅.纳米纤维状氧化铝的性质及其在蒽醌加氢反应中的应用[J].分子催化,2005,(6):425-429 |
纳米纤维状氧化铝的性质及其在蒽醌加氢反应中的应用 |
Properties and Catalytic Application of Nano-alumina Fiber Used as Supports in the Hydrogenation of 2-Ethyltetrahydroanthraquinone |
投稿时间:2005-01-04 修订日期:2005-03-02 |
DOI: |
中文关键词: 纳米氧化铝纤维 钯 蒽醌 加氢 |
英文关键词:Nano-alumina fiber Pd Anthraquinone Hydrogenation |
基金项目:中国科学院资助项目;南开大学校科研和教改项目 |
王寰 李伟 张明慧 陶克毅 |
南开大学,化学学院,天津300071 |
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中文摘要: |
本文考察了纳米纤维状氧化铝TH的焙烧成型过程;对比了两种不同形态氧化铝一工业氧化铝BA和纳米纤维状氧化铝TH的物化性质及以此两种氧化铝为载体负载的钯催化剂在蒽醌加氢反应中的催化性能.结果表明,由于纳米纤维状氧化铝TH比工业氧化铝BA具有更高的比表面及更加适宜的织构性质,有利于实现活性组分钯在载体上的高度分散和产物的扩散,从而表现出更高的氢蒽醌选择性和氢化效率. |
英文摘要: |
The properties of the nano-alumina fiber designated as TH were studied and it was compared with a commercialalumina,BA,which is widely used as catalytic supports in the industry.Pd/BA and Pd/TH catalysts prepared by the impregnation of BA and TH support withPdCl_(2)solution were evaluated in the hydrogenation reaction of 2-Ethyltetrahydroanthraquinone.The results showed that the Pd/TH catalyst exhibited higher hydrogenation activity then Pd/BA catalyst.This can be attributed to the uniqueproperties of TH: the higher specific surface areacan promote a higher dispersion of Pd on the support,meanwhile,the suitable textural properties make the diffusion of the product molecular in the catalyst easier. |
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