| 硅铝配比对浆态床一步法制二甲醚的催化剂性能影响 |
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| 引用本文： | 黄伟,张强.硅铝配比对浆态床一步法制二甲醚的催化剂性能影响[J].太原理工大学学报,2012,43(5):531-534. |
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| 作者姓名： | 黄伟 张强 |
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| 作者单位： | 太原理工大学煤科学与技术教育部和山西省重点实验室,太原,030024 |
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| 基金项目： | 国家自然科学基金资助项目(21176167);国家“973”计划基金资助项目(2011CB211709) |
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| 摘 要： | 采用分步沉淀法,以TEOS(正硅酸乙酯)为硅源制备了Cu-Zn-Si-Al双功能浆状催化剂。用XRD,TPR,NH3-TPD-MS等表征手段对催化剂结构性能进行了分析。结果表明,不同硅铝配比对催化剂性能有较大影响,随硅铝摩尔比增加,催化剂的还原性能增强;当硅铝摩尔比为1∶1时,催化剂具有最佳的催化性能。经分析认为,催化剂分散性能及催化剂中弱酸位的多少是影响其活性的主要因素。
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| 关 键 词： | 浆态床 二甲醚 Cu-Zn-Si-Al催化剂 硅铝配比 |
Effect of Si/Al Ratio on Catalytic Performance of Cu-Zn-Si-Al Catalyst for Dimethyl Ether Synthesis in Slurry Reactor |
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| HUANG Wei
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ZHANG Qiang.Effect of Si/Al Ratio on Catalytic Performance of Cu-Zn-Si-Al Catalyst for Dimethyl Ether Synthesis in Slurry Reactor[J].Journal of Taiyuan University of Technology,2012,43(5):531-534. |
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| Authors: | HUANG Wei ZHANG Qiang |
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| Institution: | (Key Laboratory of Coal Science and Technology, Ministry of Education and Shanxi Province,TUT,Taiyuan 030024,China) |
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| Abstract: | Cu-Zn-Si-Al bifunctional catalysts were prepared by step-by-step precipitation method,TEOS as silica source.The catalysts were characterized by XRD,TPR and NH3-TPD-MS.The results indicate that Si/Al ratio affected the catalyst performance obviously.The increase of Si/Al ratio was beneficial to the reducibility of the catalyst on the whole.When the Si/Al ratio was 1,the catalyst showed best catalytic performance.The dispersibility and the weak acid sites of the catalysts had major effect on their activity. |
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| Keywords: | slurry reactor dimethyl ether Cu-Zn-Si-Al catalyst Si/Al ratio |
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