| H-beta分子筛催化苯与甲醇烷基化反应性能 |
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| 引用本文： | 刘兴勤,董鹏,李贵贤,郭泳圻,张永福,吴超.H-beta分子筛催化苯与甲醇烷基化反应性能[J].工业催化,2019,27(1):28-32. |
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| 作者姓名： | 刘兴勤 董鹏 李贵贤 郭泳圻 张永福 吴超 |
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| 作者单位： | 兰州石化职业技术学院,甘肃 兰州,730060;兰州石化职业技术学院,甘肃 兰州 730060;兰州理工大学 石油化工学院,甘肃 兰州 730050;兰州理工大学 石油化工学院,甘肃 兰州,730050 |
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| 摘 要： | 采用两种促进剂协同作用改性制得了H-beta分子筛催化剂,通过XRD、BET及Py-IR对催化剂结构、比表面积及酸性变化进行表征,并将催化剂用于苯与甲醇烷基化测试其催化性能。结果表明,在反应压力为常压、反应温度400℃、空速2 h-1和苯与甲醇物质的量比为1∶1的最优条件下,苯转化率达到42. 5%、甲苯选择性为74. 6%,甲苯和二甲苯总选择性达到了94. 5%。基于结构及性能的研究,探讨了催化烷基化反应机理。
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| 关 键 词： | 催化化学 H-beta 苯/甲醇 甲苯 二甲苯 烷基化 |
Catalytic performance of H-beta zeolites for alkylation of benzene and methanol |
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| Liu Xingqin,Dong Peng,Li Guixian,Guo Yongqi,Zhang Yongfu,Wu Chao.Catalytic performance of H-beta zeolites for alkylation of benzene and methanol[J].Industrial Catalysis,2019,27(1):28-32. |
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| Authors: | Liu Xingqin Dong Peng Li Guixian Guo Yongqi Zhang Yongfu Wu Chao |
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| Affiliation: | 1.Lanzhou Petrochemical College of Vocational Technology,Lanzhou 730060,Gansu,China;2.College of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,Gansu,China |
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| Abstract: | H-beta zeolites catalyst was modified by synergistic effect of two accelerants.Meanwhile,structure,specific surface area and acid change of catalyst were characterized by XRD,BET and Py-IR.Catalyst was tested in alkylatipon of benzene and methanol.Results showed that under the optimum reaction pressure of atmospheric pressure,MHSV=2 h-1,reaction temperature of 400 ℃,molar ratio of benzene/methanol=1∶1,benzene conversion reached 42.5%,selectivity of toluene was 74.6%,total selectivity of toluene and xylene reached 94.5%.The mechanism of catalytic alkylation was discussed based on study of structure and performance. |
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| Keywords: | catalytic chemistry H-beta benzene/methanol toluene xylene alkylation |
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