| 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 |
| |
| 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. |
| |
| 作者姓名： | 童锴 李军辉 奚志文 朱志荣 |
| |
| 作者单位： | Functional Material and Green Catalysis Laboratory, Department of Chemistry of Tongji University, Shanghai 200092, China |
| |
| 基金项目： | 国家自然科学基金石油化工联合基金(U13171009);上海市重点基础研究项目(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。
|
| 关 键 词： | ZSM-5 甲醇 芳构化 择形 PX |
| 收稿时间： | 2014-09-15 |
Study of methanol shape-selective aromatization over ZnO/SiO2/ZSM-5 modified with mental oxide and silicon deposition |
| |
| 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. |
| |
| Authors: | TONG Kai LI Jun-hui XI Zhi-wen ZHU Zhi-rong |
| |
| Institution: | Functional Material and Green Catalysis Laboratory, Department of Chemistry of Tongji University, Shanghai 200092, China |
| |
| Abstract: | ZnO/SiO2/ZSM-5 zeolites were prepared from ZSM-5 by vacuum metal impregnation of metallic oxides and silicon deposition. The resulted zeolite were characterized by XRD, BET, NH3-TPD, SEM and TEM. Furthermore, the influence of silicon deposition time and the content of impregnated ZnO to the selectivity and yield of p-xylene (PX) on the reaction of aromatization of methanol was investigated. The results indicated that by twice silicon deposition and 2.0% ZnO, the modified ZSM-5 had the highest PX selectivity. The yield of PX could reach up to 28% at 420 ℃, 0.2 MPa and 1.25 h-1 of methanol WHSV. |
| |
| Keywords: | ZSM-5 methanol aromatization shape-selective p-xylene p-xylene |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《燃料化学学报》浏览原始摘要信息 |
| 点击此处可从《燃料化学学报》下载免费的PDF全文 |
|
