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| 氯甲烷在镁修饰的ZSM-5分子筛催化剂上催化转化研究 | |
| 引用本文： | 张大治,魏迎旭,沈江汉,刘红超,王颖利,许磊,Bao-lian SU,刘中民. 氯甲烷在镁修饰的ZSM-5分子筛催化剂上催化转化研究[J]. 天然气化工, 2006, 31(3): 14-18 |
| 作者姓名： | 张大治 魏迎旭 沈江汉 刘红超 王颖利 许磊 Bao-lian SU 刘中民 |
| 作者单位： | 1. 中国科学院大连化学物理研究所,大连,116023;中国科学院研究生院,北京,100039 2. 中国科学院大连化学物理研究所,大连,116023 3. The University of Namur(FUNDP), B-5000, Namur, Belgium |
| 摘 要： | 在镁修饰的ZSM-5分子筛催化剂上,氯甲烷可以被催化转化为烃类产品。分别采用了离子交换和浸渍的方法来修饰ZSM-5分子筛。离子交换的Mg-ZSM-5催化剂和浸渍的Mg/ZSM-5催化剂都可以提高反应产物中的低碳烯烃的选择性,降低烷烃的选择性,并且保持较高的反应活性,但高的浸渍量对反应活性有一定的影响。NH3-TPD的结果表明,浸渍镁的ZSM-5催化剂的强酸中心数目明显减少。镁的修饰对催化剂酸性的影响导致了产物中低碳烯烃的增加。浸渍Mg的ZSM-5催化剂是潜在氯甲烷转化生成低碳烯烃的催化剂。 |
| 关 键 词： | 氯甲烷 低碳烯烃 分子筛 ZSM-5 Mg NH3-TPD |
| 文章编号： | 1001-9219（2006）03-14-05 |
| 修稿时间： | 2005-12-22 |
Chloromethane Conversion over Mg Modified ZSM-5 Zeolite Catalysts |
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| ZHANG Da-zhi,WEI Ying-xu,SHEN Jiang-han,LIU Hong-chao,WANG Ying-li,XU Lei,Bao-lian SU,LIU Zhong-min. Chloromethane Conversion over Mg Modified ZSM-5 Zeolite Catalysts[J]. Natural Gas Chemical Industry, 2006, 31(3): 14-18 | |
| Authors: | ZHANG Da-zhi WEI Ying-xu SHEN Jiang-han LIU Hong-chao WANG Ying-li XU Lei Bao-lian SU LIU Zhong-min |
| Affiliation: | 1 .Dalian institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, china; 2.Graduate school of the Chinese Academy of Sciences, Beijing 100039, china; 3The University of Namur (FUNDP |
| Abstract: | Chloromethane was catalytically converted to higher hydrocarbons over Mg modified ZSM-5 catalyst. Two methods, ion-exchanging and impregnation, were utilized to prepare the catalysts. It was demonstrated that Mg modification could increase the olefins selectivity, decrease the paraffins selectivity, and yield high activity in the chloromethane transformation reaction, while excessive modification caused activity loss. The acid property of impregnated Mg/ZSM-5 catalysts was observed in NH3-TPD. The improvement of light olefins selectivity resulted from the effect of Mg impregnation on the acid property. The Mg modified ZSM- 5 are potential catalysts for chloromethane transformation to light olefins. |
| Keywords: | ZSM-5 Mg NH3-TPD |
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