| Hydrogenation of Furfural to Furfuryl Alcohol over Co-B Amorphous Catalysts Prepared by Chemical Reduction in Variable Media |
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| 作者姓名： | 李辉 柴伟梅 骆红山 李和兴 |
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| 作者单位： | Department of Chemistry, Shanghai Normal University, Shanghai 200234, China |
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| 基金项目： | Project supported by the 973 Program （No. 2005CCA01100）, Shanghai Leading Academic Discipline Project （No. T0402）, the Shanghai Science and Technology Committee （Nos. 0452nm070, 05QMX 1442 and 0552nm036） and the Shanghai Eduction Committee （No. 05DZ20）. |
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| 摘 要： | Five Co-B amorphous alloy catalysts were prepared by chemical reduction in different media, including pure water and pure ethanol as well as the mixture of ethanol and water with variable ethanol content, Their catalytic properties were evaluated using liquid phase furfural hydrogenation to furfuryl alcohol as the probe reaction. It was found that the reaction media had no significant influence on either the amorphous structure of the Co-B catalyst or the electronic interaction between metallic Co and alloying B. This could successfully account for the fact that all the as-prepared Co-B catalysts exhibited almost the same selectivity to furfuryl alcohol and the same activity per surface area （ Rs ）, which could be considered as the intrinsic activity, since the nature of active sites remained unchanged. However, the activity per gram of Co （ R^mH ） of the as-prepared Co-B catalysts increased rapidly when the ethanol content in the water-ethanol mixture used as the reaction medium for catalyst preparation increased. This could be attributed to the rapid increase in the surface area possibly owing to the presence of more oxidized boron species which could serve as a support for dispersing the Co-B amorphous alloy particles.
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| 关 键 词： | 溶剂效应 钴-硼无定形催化剂 糠醛氢化 醇-水溶液 糠基醇 |
| 收稿时间： | 2006-01-05 |
| 修稿时间： | 2006-01-052006-03-22 |
Hydrogenation of Furfural to Furfuryl Alcohol over Co-B Amorphous Catalysts Prepared by Chemical Reduction in Variable Media |
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| LI Hui, CHAI Wei-Mei, LUO Hong-Shan, LI He-Xing,.Hydrogenation of Furfural to Furfuryl Alcohol over Co-B Amorphous Catalysts Prepared by Chemical Reduction in Variable Media[J].Chinese Journal of Chemistry,2006,24(12):1704-1708. |
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| Authors: | LI Hui CHAI Wei-Mei LUO Hong-Shan LI He-Xing |
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| Institution: | Department of Chemistry, Shanghai Normal University, Shanghai 200234, China |
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| Abstract: | Five Co-B amorphous alloy catalysts were prepared by chemical reduction in different media,including pure water and pure ethanol as well as the mixture of ethanol and water with variable ethanol content.Their catalytic properties were evaluated using liquid phase furfural hydrogenation to furfuryl alcohol as the probe reaction,It was found that the reaction media had no significant influence on either the amorphous structure of the Co-B catalyst or the electronic interaction between metallic Co and alloying B.This could successfully account for the fact that all the as-prepared Co-B catalysts exhibited almost the same selectivity to furfuryl alcohol and the same activity per surface area (R_H~S),which could be considered as the intrinsic activity,since the nature of active sites remained un- changed.However,the activity per gram of Co (R_H~m) of the as-prepared Co-B catalysts increased rapidly when the ethanol content in the water-ethanol mixture used as the reaction medium for catalyst preparation increased.This could be attributed to the rapid increase in the surface area possibly owing to the presence of more oxidized boron species which could serve as a support for dispersing the Co-B amorphous alloy particles. |
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| Keywords: | solvent effect Co-B amorphous catalyst furfural hydrogenation ethanol-water solution |
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