| 担载Ru-Co原子簇催化剂在乙烯甲酰化中的催化行为 |
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| 引用本文： | 肖丰收. 担载Ru-Co原子簇催化剂在乙烯甲酰化中的催化行为[J]. 物理化学学报, 1994, 0(8) |
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| 作者姓名： | 肖丰收 |
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| 作者单位： | 吉林大学化学系!长春130023 |
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| 基金项目： | 国家自然科学基金，教委优秀年轻教师基金 |
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| 摘 要： | 众所周知，催化活性和选择性与活性组分的粒度、结构有很大的关系，而通过金属有机原子簇化合物载于无机载体上可以获得金属高分散度和金属组分组成均匀的催化剂，在一系列反应中显示了较高的活性和选择性[1-3]．在前面的研究中，肖丰收等报导了担载的Ru－CO双金属原子簇催化剂在CO＋H2反应中对含氧化合物的形成显示了很高的活性和选择性[4-5]．在本文中，作者利用红外光谱等技术研究了在SiO2担载的Ru－Co双金属原子簇催化剂上乙烯甲酸化反应，并对含氧化合物的形成机理进行了讨论．1实验部分在催化剂的制备过程中所有的操作都是在高纯…
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| 关 键 词： | Ru－Co原子簇 乙烯甲酰化 含氧化合物 CO加氢反应 表面酰基 IR |
Catalytic Performance in Ethylene Hydroformylation over Silica Supported Ru-Co Bimetallic Carbonyl Cluster-Derived Catalysts |
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| Xiao Fengshou. Catalytic Performance in Ethylene Hydroformylation over Silica Supported Ru-Co Bimetallic Carbonyl Cluster-Derived Catalysts[J]. Acta Physico-Chimica Sinica, 1994, 0(8) |
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| Authors: | Xiao Fengshou |
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| Abstract: | A series of catalysts such as Ru/SiO2, Co/SiO2 and Ru-Co/SiO2 were prepared by using the precuxsors of Ru, Co and Ru-Co carbony1 clusters. The catalytic performance in hydroformylation of ethylene showed that the activity and selectivity on a series of RuCo/Sio2 for C3-oxygenated products are much higher than those on Ru/SiO2 and Co/SiO2catalysts. The adsorption of CO on reduced Ru-Co/SiO2 eXhibited a hand at l68ocm-1,which was assigned to the C- and O- ended CO cheAnsorbed on Ru-Co/SiO2 catalysts.The IR spectra of the reaction of C2H4+CO+H2 with Ru-Co/SiO2 catalysts showed bands at 1582 and 1555cm-1, which may possibly be assigned to formyl and C3-acyl species on the surface, they play very important role for the formation of C3-oxygenates in hydroformylation of ethylene. |
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| Keywords: | Ru-Co cluster Hydroformylation of ethylene Surface acyl IR |
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