| 不同硅铝比HZSM-5分子筛对合成气一步法制二甲醚的影响 |
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| 引用本文： | 佟玲,张谦温,张启俭.不同硅铝比HZSM-5分子筛对合成气一步法制二甲醚的影响[J].辽宁化工,2007,36(7):443-445,447. |
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| 作者姓名： | 佟玲 张谦温 张启俭 |
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| 作者单位： | 1. 辽宁工学院材料与化学工程学院,辽宁,锦州,121001
2. 北京石油化工学院化学工程系,北京,102617 |
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| 摘 要： | 采用固定床高压反应装置，以工业用（CuO／ZnO／Al2O3）作为甲醇合成催化剂，四种不同硅铝比（硅铝比为25、38、50和150）的HZSM-5作为甲醇脱水催化剂，二者机械混合制备出一步法合成二甲醚双功能催化剂。考察了催化剂中脱水组分（HZSM-5分子筛）的硅铝比对二甲醚合成反应的影响，并通过BET、XRD和NH，-TPD等手段对催化剂进行表征。结果表明，一步法合成二甲醚催化剂中脱水组分HZSM-5的最佳的硅铝比为50。
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| 关 键 词： | 一步法 DME HZSM-5 硅铝比 |
| 文章编号： | 1004-0935（2007）07-0443-04 |
| 修稿时间： | 2007-03-19 |
Study on the Effect of Si/Al Ratio of HZSM-5 on the Direct Synthesis of Dimethyl Ether |
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| TONG Ling,ZHANG Qian-wen,ZHANG Qi-jian.Study on the Effect of Si/Al Ratio of HZSM-5 on the Direct Synthesis of Dimethyl Ether[J].Liaoning Chemical Industry,2007,36(7):443-445,447. |
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| Authors: | TONG Ling ZHANG Qian-wen ZHANG Qi-jian |
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| Affiliation: | 1.College of Material and Chemical Engineering, Liaoning Institute of Technology, Jinzhou, 121001, China; 2. Department of Materials and Chemical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China |
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| Abstract: | The direct synthesis of dimethyl ether was studied over the bifunctional catalysts of mechanical mixed commercial methanol synthesis catalysts(CuO/ZnO/Al2O3) and dehydration catalysts HZSM-5 with different Si/Al ratio(25,38,50 and 150) in a fixed-bed and high-pressure reactor.In this paper,several kinds of HZSM-5 with different Si/Al ratio were used to investigate their effects on the direct synthesis of dimethyl ether.The catalysts were characterized by means of BET,XRD and NH3-TPD.The results showed that the best Si/Al ratio of HZSM-5 catalyst used as dehydration catalyst is 50. |
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| Keywords: | One- step method Dimethyl ether HZSM-5 Si/Al ratio |
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