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| Mg-Al水滑石催化甘油与碳酸二甲酯的酯交换反应简 | |
| 引用本文： | 郑丽萍,夏水鑫,侯召同,张梦媛,侯昭胤. Mg-Al水滑石催化甘油与碳酸二甲酯的酯交换反应简[J]. 催化学报, 2014, 35(3): 310-318. DOI: 10.1016/S1872-2067(12)60738-4 |
| 作者姓名： | 郑丽萍 夏水鑫 侯召同 张梦媛 侯昭胤 |
| 作者单位： | a 浙江大学化学系催化研究所, 浙江杭州10028; b 江苏常隆化工有限公司, 江苏常州213031 |
| 基金项目： | supported by the National Natural Foundation of China (21273198,21073158);the Zhejiang Provincial Natural Science Foundation (LZ12B03001)~~ |
| 摘 要： | 报道了温和条件下甘油和碳酸二甲酯在一系列不同Mg/Al比（0.5-6）的Mg-Al水滑石催化下合成碳酸甘油酯（GC）的反应. 发现，Mg-Al水滑石对该反应具有很高的GC选择性，其中Mg/Al=2经400℃处理所得水滑石催化效率最高：70 ℃反应3 h甘油转化率达66.9%时，GC选择性维持在97%以上. 表征结果表明，水滑石样品的比表面积、孔径、结晶度和表面碱性对其催化活性影响很大. |
| 关 键 词： | 甘油 碳酸甘油酯 酯交换反应 镁-铝水滑石 |
| 收稿时间： | 2013-09-15 |
Transesterification of glycerol with dimethyl carbonate over Mg-Al hydrotalcites |
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| Liping Zheng,Shuixin Xia,Zhaotong Hou,Mengyuan Zhang,Zhaoyin Hou. Transesterification of glycerol with dimethyl carbonate over Mg-Al hydrotalcites[J]. Chinese Journal of Catalysis, 2014, 35(3): 310-318. DOI: 10.1016/S1872-2067(12)60738-4 | |
| Authors: | Liping Zheng Shuixin Xia Zhaotong Hou Mengyuan Zhang Zhaoyin Hou |
| Affiliation: | a Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou 310028, Zhejiang, China; b Jiangsu Changlong Chemical Co., Changzhou 213031, Jiangsu, China |
| Abstract: | Glycerol carbonate (GC) was synthesized via the catalytic transesterification of glycerol with dimethyl carbonate over a series of Mg-Al hydrotalcites with different Mg/Al ratios (0.5-6) under mild conditions. All catalysts exhibited a high selectivity toward GC. The sample with Mg/Al=2 exhibited 97.1% of selectivity toward GC and 66.9% of glycerol conversion at 70℃ for 3 h. Characterization results indicated that the activity of calcined Mg-Al hydrotalcites depended mainly on the surface area, pore diameter, and crystallinity. |
| Keywords: | Glycerol Glycerol carbonate Transesterification Magnesium-Aluminum hydrotalcite |
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