| 水蒸气处理对HZSM-5分子筛催化合成二甲醚反应性能的影响 |
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| 引用本文： | 毛东森,夏建超.水蒸气处理对HZSM-5分子筛催化合成二甲醚反应性能的影响[J].石油学报(石油加工),2011,27(6):897-903. |
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| 作者姓名： | 毛东森 夏建超 |
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| 作者单位： | 1. 上海应用技术学院 化学与环境工程学院, 上海 200235; 2. 中国石化 上海石油化工研究院, 上海 201208 |
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| 基金项目： | 上海市科委地方能力建设项目(08520513600); 上海市教委重点学科建设项目(J51503)资助 |
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| 摘 要： | 采用不同水蒸气处理温度制备了一系列 HZSM-5分子筛，考察了其催化甲醇脱水反应的性能，并以其为甲醇脱水活性组分与铜基甲醇合成活性组分(Cu-ZnO-Al2O3 )组成双功能催化剂，考察了其对合成气直接制二甲醚反应的催化性能。结果表明，随着水蒸气处理温度的提高，HZSM-5分子筛的酸性逐渐减弱，从而使甲醇脱水反应的二甲醚选择性逐渐增大。对于催化合成气直接制二甲醚反应，当HZSM-5分子筛在适当温度(500℃)下进行处理时，可使反应产物中 CO2副产物的选择性明显下降，目的产物二甲醚的选择性显著提高。当处理温度过高(600℃)时，CO的转化率和二甲醚的选择性均明显降低。相同温度下的水蒸气和氨水蒸气处理对 Cu-ZnO-Al2O3/HZSM-5双功能催化剂催化合成气直接制二甲醚反应的性能几乎无影响。
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| 关 键 词： | HZSM-5分子筛 水蒸气处理 甲醇脱水 合成气 二甲醚 双功能催化剂 |
| 收稿时间： | 2010-10-08 |
Effect of Steam Treatment on Catalytic Performance of HZSM-5 Zeolite for the Synthesis of Dimethyl Ether |
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| MAO Dongsen
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XIA Jianchao.Effect of Steam Treatment on Catalytic Performance of HZSM-5 Zeolite for the Synthesis of Dimethyl Ether[J].Acta Petrolei Sinica (Petroleum Processing Section),2011,27(6):897-903. |
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| Authors: | MAO Dongsen XIA Jianchao |
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| Affiliation: | 1. School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 200235, China; 2. Shanghai Research Insitute of Petrochemical Technology, SINOPEC, Shanghai 201208, China |
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| Abstract: | A series of HZSM-5 zeolites were prepared by steam treatment at different temperatures,and their catalytic performances for methanol dehydration were investigated.Moreover,the prepared HZSM-5 zeolites were physically mixed with a methanol synthesis component(CuO-ZnO-Al2O3) to form hybrid catalysts,and their catalytic performances for the direct synthesis of dimethyl ether(DME) from syngas were studied.The results indicated that the selectivity for DME in the methanol dehydration increased with the increase ... |
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| Keywords: | HZSM-5 zeolite steam treatment dehydration of methanol synthesis gas dimethyl ether hybrid catalyst |
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