| 甲醇在水蒸汽处理改性ZSM-5分子筛上转化制丙烯 |
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| 引用本文： | 姚敏,张堃,温鹏宇,窦涛,伍永平.甲醇在水蒸汽处理改性ZSM-5分子筛上转化制丙烯[J].工业催化,2011,19(12):35-39. |
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| 作者姓名： | 姚敏 张堃 温鹏宇 窦涛 伍永平 |
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| 作者单位： | 1.西安科技大学，陕西 西安 710054； 2.神华宁夏煤业集团有限责任公司，宁夏 银川 750011； ;
3.上海福瑞得化工科技有限公司，上海 201208； 4.中国石油大学（北京），北京 102249 |
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| 基金项目： | 国家科技支撑计划（2007BAA08B05）资助项目 |
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| 摘 要： | 对硅铝物质的量比分别为20、80和220的ZSM-5分子筛进行水蒸汽处理改性,通过使用X射线衍射、吡啶红外吸附、N2吸附和透射电子显微镜等手段研究了水蒸汽改性对ZSM-5分子筛孔道结构的影响,并考察了改性后分子筛在甲醇转化制丙烯反应中的催化性能.结果表明,水蒸汽改性处理导致低硅ZSM-5酸性减弱,并使其出现大量介孔.在...
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| 关 键 词： | 催化化学 甲醇 丙烯 ZSM-5分子筛 水蒸汽处理 |
Methanol conversion to propylene over steam treated ZSM-5 molecular sieves |
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| YAO Min,ZHANG Kun,WEN Pengyu,DOU Tao,WU Yongping.Methanol conversion to propylene over steam treated ZSM-5 molecular sieves[J].Industrial Catalysis,2011,19(12):35-39. |
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| Authors: | YAO Min ZHANG Kun WEN Pengyu DOU Tao WU Yongping |
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| Affiliation: | 1.Xi’an Universty of Science and Technology, Xi'an 710054, Shaanxi, China; 2.Shenhua Ningxia Coal ;
Industry Group Co., Ltd., Yinchuan 750011, Ningxia, China; 3.Shanghai Friend Chemical Technology ;
Co.,Ltd., Shanghai 201208, China; 4.China University of Petroleum, Beijing 102249, China |
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| Abstract: | ZSM-5 catalysts with Si/Al molar ratios of 20,80 and 220 were modified by steam treatment. The as-prepared catalysts were characterized by XRD, Py-IR, N2-adsorption and TEM techniques and their catalytic performance in methanol conversion to propylene was investigated. The results showed that steam treatment for ZSM-5 catalysts with lower Si/A1 ratios led to not only the reduction of the catalyst acidity, but also the formation of the mesopores. The mass fraction of propylene of 40.89% in the prodution and propylene/ethylene mass ratio of 5.9 were attained over the catalyst under the reaction condition of catalyst dosage 3 g,470 ℃,PMeOH =50 kPa,and space velocity 1 h^-1. |
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| Keywords: | catalytic chemistry methanol propylene ZSM-5 molecular sieve steam treatment |
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