| K-L分子筛对甲苯芳环氯化选择性的影响 |
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| 引用本文： | 殷云武,许亮,方永勤.K-L分子筛对甲苯芳环氯化选择性的影响[J].化学世界,2012,53(1):37-39. |
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| 作者姓名： | 殷云武 许亮 方永勤 |
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| 作者单位： | 1. 丹阳中超化工有限公司,江苏镇江,212310
2. 常州大学设计研究院,江苏常州,213164 |
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| 摘 要： | 以K-L分子筛为催化剂,催化氯化甲苯制备邻/对氯甲苯,考察催化剂用量、粒径、重复使用次数、及溶剂等工艺条件对氯化选择性的影响。较优条件:氯化温度55℃,反应时间4h,催化剂粒径200目,K-L分子筛=10.0%,1,2-二氯乙烷=40.0%。在此条件下,甲苯转化率为99.8%,对氯甲苯选择性为84.1%,其催化性能优于工业常用的硫铁粉催化剂。
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| 关 键 词： | K-L分子筛 甲苯 对氯甲苯 选择性 |
Effect of K-L Zeolite on Selectivity of Toluene Aromatic Chlorination |
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| YIN Yun-wu
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XU Liang
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FANG Yong-qin.Effect of K-L Zeolite on Selectivity of Toluene Aromatic Chlorination[J].Chemical World,2012,53(1):37-39. |
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| Authors: | YIN Yun-wu XU Liang FANG Yong-qin |
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| Affiliation: | 1.Danyang Zhongchao Chemical Co.LTD.,Jiangsu Zhenjiang 212310,China;2.Design & Research Institute,Changzhou University,Jiangsu Changzhou 213164,China) |
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| Abstract: | o/p-Chlorotoluene was prepared by chlorinating toluene using K-L zeolite as catalyst.The effects of technological factors on chlorination selectivity were studied,such as catalyst amount,grain diameter,solvent and recycle of catalyst.The optimum conditions were as follows:chlorination at 55℃,reaction time of 4h,K-L zeolite=10.0%,1,2-dichloroethylene=40.0%,catalyst grain diameter of 200 mesh.Under optimal conditions,the conversion of toluene was 99.8% and the selectivity of p-chlorotoluene was 84.1%.The performance of K-L zeolite was superior to the sulfogen catalyst. |
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| Keywords: | K-L zeolite toluence p-chlorotoluene selectivity |
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