金属氧化物和硅沉积改性 ZnO/SiO2/ZSM-5的甲醇择形芳构化反应催化研究

童锴 李军辉 奚志文 朱志荣

引用本文: 童锴, 李军辉, 奚志文, 朱志荣. 金属氧化物和硅沉积改性 ZnO/SiO2/ZSM-5的甲醇择形芳构化反应催化研究[J]. 燃料化学学报, 2015, 43(2): 221-227. shu
Citation:  TONG Kai, LI Jun-hui, XI Zhi-wen, ZHU Zhi-rong. Study of methanol shape-selective aromatization over ZnO/SiO2/ZSM-5 modified with mental oxide and silicon deposition[J]. Journal of Fuel Chemistry and Technology, 2015, 43(2): 221-227. shu

金属氧化物和硅沉积改性 ZnO/SiO2/ZSM-5的甲醇择形芳构化反应催化研究

    通讯作者: 朱志荣, 男, 博士, 教授, 主要研究方向为择形催化, Tel: 15021225562, E-mail: zhuzhirong@tongji.edu.cn。
  • 基金项目:

    国家自然科学基金石油化工联合基金(U13171009) (U13171009)

    上海市重点基础研究项目(11JC1412500) 。 (11JC1412500)

摘要: 采用真空浸渍法对ZSM-5分子筛进行硅沉积和负载金属修饰,制备了复合改性的ZnO/SiO2/ZSM-5催化剂,并将它应用于甲醇择形芳构化反应中。采用XRD、BET、NH3-TPD、SEM、TEM等方法对制备的催化剂进行了物化表征。考察硅沉积次数和ZnO负载量对甲醇芳构化反应(MTA)中对二甲苯(PX)的选择性和收率的影响。结果表明,两次硅沉积改性并负载2.0%金属ZnO的ZSM-5分子筛具有较高的PX收率,在优化的反应温度420 ℃、反应压力0.2 MPa、甲醇空速WHSV为1.25 h-1下,PX收率在28%以上。

English

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  • 收稿日期:  2014-09-15
  • 网络出版日期:  2014-11-13
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