| 钙硼对CuO/Al_2O_3催化剂结构及醋酸仲丁酯氢解性能的影响 |
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| 引用本文： | 姚志龙.钙硼对CuO/Al_2O_3催化剂结构及醋酸仲丁酯氢解性能的影响[J].中国科学:化学,2014(1):114-120. |
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| 作者姓名： | 姚志龙 |
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| 作者单位： | [1]北京石油化工学院,北京102617 [2]恩泽生物质精细化工北京市重点实验室,北京102617 |
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| 摘 要： | 以经氧化钙和氧化硼改性的氧化铝为载体,采用浸渍法制备了负载型CuO/Al2O3催化剂,采用XRD、BET、TPR和NH3-TPD技术对催化剂CuO/Al2O3进行了表征.结果表明,氧化硼既可以作为结构性助剂提高铜在催化剂表面的分散度,又可以作为电子性助剂有利于催化剂表面氧化铜物种的稳定;氧化钙的引入降低了催化剂表面酸性,有利于催化剂的选择性提高.采用氧化硼和氧化钙改性的Cu10B20Ca30为催化剂,醋酸仲丁酯转化率可达99.5%,生成仲丁醇和乙醇的选择性分别达98.9%和97.8%.
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| 关 键 词： | 醋酸仲丁酯 氢解 氧化钙 氧化硼 |
Effect of calcium and boron modified on the structure and hydrogenolysis performance of CuO/AI203 in catalyzing sec-butyl acetate |
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| YAO ZhiLong.Effect of calcium and boron modified on the structure and hydrogenolysis performance of CuO/AI203 in catalyzing sec-butyl acetate[J].Scientia Sinica Chimica,2014(1):114-120. |
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| Authors: | YAO ZhiLong |
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| Institution: | YAO ZhiLong(1 Beijing Institute of Petrochemical Technology, Beijing 102617, China; 2 Beijing Key Laboratory of Enze Biomass Fine Chemicals, Beijing 102617, China) |
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| Abstract: | CuO/Al2O3 catalysts modified by calcium oxide and boron oxide were prepared by impregnation. XRD, TPR, BET and NH3-TPD methods were used to characterize the catalysts of CuO/Al2O3 . The results showed that boron oxide acted as both structural promoter and electron promoter in CuO/Al2O3 catalysts. Boron oxide could modify the interaction between copper oxide, which is conducive to the disperse of copper oxide and stability of CuO species. The acidity of catalyst reduced with calcium oxide added. By using the catalysts modified with boron oxide and calcium oxide with a weight loading of 10% CuO, the conversion rate of sec-butyl acetate was up to 99.5%, whereas the selectivities for sec-butyl alcohol and ethyl alcohol were over 98.9% and 97.8%, respectively. |
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| Keywords: | sec-butyl acetate hydrogenolysis calcium oxide boron oxide |
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