| 乳酸甲酯脱水制备丙烯酸酯催化剂评价及反应条件优化 |
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| 引用本文： | 张金锋,林建平,许晓波,岑沛霖. 乳酸甲酯脱水制备丙烯酸酯催化剂评价及反应条件优化[J]. 中国化学工程学报, 2008, 16(2): 263-269. DOI: 10.1016/S1004-9541(08)60073-7 |
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| 作者姓名： | 张金锋 林建平 许晓波 岑沛霖 |
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| 作者单位： | Institute of Bioengineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hang-zhou 310027, China |
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| 基金项目： | Supported by the Special Foundation for State Major Basic Research Program of China (2007CB707805, 2004CCA05500). |
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| 摘 要： | The production of acrylates from biomass-originated lactic acid is of extraordinary importance, to overcome the increasing worldwide shortage of petroleum. In this study, the catalytic dehydration of methyl lactate over a calcium sulfate catalyst, with various promoters, has been carried out to identify potential catalyst/promoter combinations for acrylate production. The best catalyst for methyl acrylate formation in this study has been calcium sulfate, with cupric sulfate and phosphates as promoters. The optimal mass ratio of m（CaSOa） ： m（CuSOa） ： m（Na2HPO4） ： m（KH2PO4） is 150.0 ： 13.8 ： 2.5 ： 1.2. Effects of carrier gas, reaction temperature, feed concentration as well as contact time on the dehydration of methyl lactate have been investigated. With nitrogen as a carrier gas, a combined yield of acrylic acid and methyl acrylate is 63.9% from 60% （by mass） methyl lactate at 400℃ with 7.7 seconds contact time.
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| 关 键 词： | acrylate contact time cupric sulfate dehydration promoters |
| 收稿时间： | 2007-07-12 |
| 修稿时间： | 2007-07-12 |
Evaluation of catalysts and optimization of reaction conditions for the dehydration of methyl lactate to acrylates |
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| ZHANG Jinfeng,LIN Jianping,XU Xiaobo,CEN Peilin. Evaluation of catalysts and optimization of reaction conditions for the dehydration of methyl lactate to acrylates[J]. Chinese Journal of Chemical Engineering, 2008, 16(2): 263-269. DOI: 10.1016/S1004-9541(08)60073-7 |
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| Authors: | ZHANG Jinfeng LIN Jianping XU Xiaobo CEN Peilin |
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| Affiliation: | Institute of Bioengineering, College of Materials Science and Chemical Engineering, Zhejiang University, Hang-zhou 310027, China |
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| Abstract: | The production of acrylates from biomass-originated lactic acid is of extraordinary importance, to over- come the increasing worldwide shortage of petroleum. In this study, the catalytic dehydration of methyl lactate over a calcium sulfate catalyst, with various promoters, has been carried out to identify potential catalyst/promoter com- binations for acrylate production. The best catalyst for methyl acrylate formation in this study has been calcium sulfate, with cupric sulfate and phosphates as promoters. The optimal mass ratio of m(CaSO4) : m(CuSO4) : m(Na2HPO4) : m(KH2PO4) is 150.0 13.8 : 2.5 : 1.2. Effects of carrier gas, reaction temperature, feed concentra- tion as well as contact time on the dehydration of methyl lactate have been investigated. With nitrogen as a carrier gas, a combined yield of acrylic acid and methyl acrylate is 63.9% from 60% (by mass) methyl lactate at 400℃ with 7.7 seconds contact time. |
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| Keywords: | acrylate contact time cupric sulfate dehydration promoters |
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