| A Novel Sul ded Mo/C Catalyst for Direct Vapor Phase Carbonylation of Methanol at Atmospheric Pressure |
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| 引用本文： | Feng PengDepartment of Chemical Engineering,South China University of Technology,Guangzhou 510640,China. A Novel Sul ded Mo/C Catalyst for Direct Vapor Phase Carbonylation of Methanol at Atmospheric Pressure[J]. 天然气化学杂志, 2003, 12(1): 31-36 |
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| 作者姓名： | Feng PengDepartment of Chemical Engineering South China University of Technology Guangzhou 510640 China |
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| 作者单位： | Feng PengDepartment of Chemical Engineering，South China University of Technology，Guangzhou 510640，China |
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| 基金项目： | This work was supported by the National Nature Science Foundation of China (No.29903003). |
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| 摘 要： | The direct carbonylation of methanol, without any halide in the feed as a promoter, is presented. A series of Mo catalysts supported on activated carbon, y-Al2O3 and SiO2 were prepared. The results show that the support greatly affects the Mo catalyst in the direct vapor-phase carbonylation of methanol, and activated carbon is the best supports of the investigated supports. In addition, the relationships between adsorptions of NH3 and CO and carbonylation of methanol were investigated. A novel sulfided Mo/C catalyst had high activity and selectivity for the vapor phase carbonylation of methanol to methyl acetate without the addition of a CH3I promoter to the feed. The reaction conditions were optimized at a reaction temperature of 573 K, a methanol concentration of 23 mol% and a carbon monoxide space velocity of 3,000 L/(kg-h). Under these optimal conditions a methanol conversion of 50%, carbonylation selectivity of 80 mol%, and space-time yield of 8.0 mol/(kg-h) were obtained. The active phase of this
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| 关 键 词： | 水蒸汽 气相羰基化 碳负载钼催化剂 甲醇 大气压力 |
A Novel Sulfided Mo/C Catalyst for Direct Vapor Phase Carbonylation of Methanol at Atmospheric Pressure |
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| Feng Peng. A Novel Sulfided Mo/C Catalyst for Direct Vapor Phase Carbonylation of Methanol at Atmospheric Pressure[J]. Journal of Natural Gas Chemistry, 2003, 12(1): 31-36 |
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| Authors: | Feng Peng |
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| Affiliation: | Department of Chemical Engineering, South China University of Technology, GuangZhou 510640, China |
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| Abstract: | The direct carbonylation of methanol, without any halide in the feed as a promoter, is presented. A series of Mo catalysts supported on activated carbon, y-Al2O3 and SiO2 were prepared. The results show that the support greatly affects the Mo catalyst in the direct vapor-phase carbonylation of methanol, and activated carbon is the best supports of the investigated supports. In addition, the relationships between adsorptions of NH3 and CO and carbonylation of methanol were investigated. A novel sulfided Mo/C catalyst had high activity and selectivity for the vapor phase carbonylation of methanol to methyl acetate without the addition of a CH3I promoter to the feed. The reaction conditions were optimized at a reaction temperature of 573 K, a methanol concentration of 23 mol% and a carbon monoxide space velocity of 3,000 L/(kg-h). Under these optimal conditions a methanol conversion of 50%, carbonylation selectivity of 80 mol%, and space-time yield of 8.0 mol/(kg-h) were obtained. The active phase of this novel sulfided Mo/C catalyst is the non-crystalline phase, and the active component is present as MoS2.5 on the surface of the activated carbon. |
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| Keywords: | methanol carbonylation sulfided catalyst molybdenum catalyst support activated carbon heterogeneous catalysis |
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