| Characterization and catalytic properties of the CuO/SiO2 catalysts prepared by precipitation-gel method in the hydrogenolysis of glycerol to 1,2-propanediol: Effect of residual sodium | |
| Department | 羰基合成与选择氧化国家重点实验室 |
Huang ZW(黄志威) ; Cui F(崔芳); Kang HX(康海笑); Chen J(陈静); Xia CG(夏春谷)
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| 2009 | |
| Source Publication | Applied Catalysis A: General
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| ISSN | 0926-860X |
| Volume | 366Pages:288-298 |
| Abstract | The effect of residual sodium on the CuO/SiO2 catalysts prepared by precipitation-gel (PG) method has been investigated in correlation with the detailed characteristics of active component performance and catalytic performance in glycerol hydrogenolysis. Characterization of the catalysts showed that the residual sodium had a negative effect on the chemical–physical properties of the catalysts, such as the BET surface area, the dispersion of copper, and the reducibility of Cu2+ species as well as the adsorbility of reactant molecules. As a consequence, the conversion and selectivity of the catalysts in glycerol reactions generally decreased with increasing sodium content. The leaching of sodium from catalyst surface as a base could, however, on the one hand, weakly promote the activity of the catalyst, and on the other hand, could help retard the leaching of the active copper component and reduce the deactivation rate of the catalyst. The glycerol hydrogenolysis reaction is supposed to be a structure-sensitive reaction, in which copper particle sizes lower than a critical limit or those that did not fulfill a certain ensemble requirement were not active for glycerol reaction. Such details explained the lower TOFs of the catalysts with much smaller sizes. A certain amount of sodium is deduced to be needed for CuO/SiO2 catalyst to exhibit both high catalytic activity and good stability. In addition, a reaction mechanism based on the effect of sodium on the activity and selectivity in glycerol hydrogenolysis has been proposed. |
| Keyword | Cuo/sio2 Catalyst Sodium Effect Precipitation-gel Method Glycerol Hydrogenolysis Propanediol |
| Subject Area | 分子催化与技术 |
| Funding Organization | the National Science Fund for Distinguished Young Scholars of China (no. 20625308) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 分子催化与技术研究组 ; 清洁催化与生物转化研究组 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/555 |
| Collection | 羰基合成与选择氧化国家重点实验室（OSSO） |
| Corresponding Author | Chen J(陈静); Xia CG(夏春谷) |
| Recommended Citation GB/T 7714 | Huang ZW,Cui F,Kang HX,et al. Characterization and catalytic properties of the CuO/SiO2 catalysts prepared by precipitation-gel method in the hydrogenolysis of glycerol to 1,2-propanediol: Effect of residual sodium[J]. Applied Catalysis A: General,2009,366:288-298. |
| APA | 黄志威,崔芳,康海笑,陈静,&夏春谷.(2009).Characterization and catalytic properties of the CuO/SiO2 catalysts prepared by precipitation-gel method in the hydrogenolysis of glycerol to 1,2-propanediol: Effect of residual sodium.Applied Catalysis A: General,366,288-298. |
| MLA | 黄志威,et al."Characterization and catalytic properties of the CuO/SiO2 catalysts prepared by precipitation-gel method in the hydrogenolysis of glycerol to 1,2-propanediol: Effect of residual sodium".Applied Catalysis A: General 366(2009):288-298. |
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