| Rh2CO2/Al2O3上H2吸附及CO和H2共吸附 |
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| 引用本文： | 陈耀强,龚茂初,祝小红,明虹,唐水花.Rh2CO2/Al2O3上H2吸附及CO和H2共吸附[J].高等学校化学学报,2002,23(4):715-717. |
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| 作者姓名： | 陈耀强 龚茂初 祝小红 明虹 唐水花 |
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| 作者单位： | 四川大学化学学院, 成都 610064 |
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| 基金项目： | 国家自然科学基金(批准号:29273117)资助． |
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| 摘 要： | CO加氢反应机理一直是许多化学工作者感兴趣的课题．Rh催化剂因其优良的性能而被用于 CO加氢机理研
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| 关 键 词： | Rh2Co2/Al2O3催化剂 H2吸附 CO和H2的共吸附 羰基氢化物 FTIR |
| 文章编号： | 0251-0790(2002)04-0715-03 |
| 收稿时间： | 2001-03-09 |
Chemisorption of H2 and Coadsorption of H2 and CO on Rh2Co2/Al2O3 |
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| CHEN Yao-Qiang,GONG Mao-Chu,ZHU Xiao-Hong,MING Hong,TANG Shui-Hua.Chemisorption of H2 and Coadsorption of H2 and CO on Rh2Co2/Al2O3[J].Chemical Research In Chinese Universities,2002,23(4):715-717. |
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| Authors: | CHEN Yao-Qiang GONG Mao-Chu ZHU Xiao-Hong MING Hong TANG Shui-Hua |
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| Institution: | Department of Chemistry, Sichuan University, Chengdu 610064, China |
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| Abstract: | The adsorption of H2 as well as coadsorption of H2 and CO on Rh2Co2/Al2O3 catalyst has beenstudied using in situ FTIR dynamic method. The band at 1 959 cm-1 for Rh-H vibration on Rh2Co2/Al2O3 (w=3%) was observed and increased in intensity without shift to low wavenumber as H2 coverageincrease. In the dynamic process of CO adsorption on Rh2Co3/Al2O3 preadsorbing H2-TP(in H2 and CO),the bands for the gem-dicarbonyl species, the linear CO species and the bridge carbonyl species were lostand the bands for carbonyl hydrides were observed at 293 K. At about 473 K, the C-O bond of rhodiumcarbonyl hydrides starts to break down and CO hydrogenation reaction occurs. It can be concluded that thescission of C-O bond under the conditions of CO hydrogenation is via rhodium carbonyl hydrides. |
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| Keywords: | Rh2Co2/Al2O3 catalyst Adsorption of H2 Coadsorption of CO and H2 Carbonyl hydride FTIR |
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