Studies on the Catalytic Behaviors of NaBr/KZSM-5 Catalyst for the Oxidative Methylation of Toluene with Methane

Acta Scientiarum Naturalium Universitatis Pekinensis

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Studies on the Catalytic Behaviors of NaBr/KZSM-5 Catalyst for the Oxidative Methylation of Toluene with Methane

ZHOU Lingping¹, DU Daming¹, LI Xuanwen¹, WANG Shaokun², ZHOU Aiqiu², LIU Jian²

¹College of Chemistry & Molecular Engineering, Perking University, Beijing, 100871, China; ²College of Chemistry, Shandong University, Jinan, 250100, China

Received:2000-09-27 Online:2002-03-20 Published:2002-03-20

NaBr/KZSM-5催化剂在甲苯氧化甲基化反应中的催化性能

周灵萍¹, 杜大明¹, 李宣文¹, 王少坤², 周爱秋², 刘建²

¹北京大学化学与分子工程学院，北京，100871; ²山东大学化学学院，山东，济南，250100

Abstract

Abstract: The effects of NaBr loading, reaction temperature and contact time on the catalytic behaviors of NaBr-promoted KZSM-5 zeolite for the oxidative methylation of toluene (OMT) were investigated systematically. It was found that the KZSM-5 zeolite catalyst promoted with proper NaBr loading was a very effective catalyst for the OMT. The optimum conditions for the OMT were found. The structure of catalysts have been characterized by XRD and framework IR. It was found that KZSM-5 zeolite exhibited excellent catalytic activity for the OMT and heat stability.

Key words: KZSM-5 zeolite, toluene, methane, oxidative methylation

摘要： 对NaBr/KZSM-5催化剂分别从NaBr负载量、反应温度及空速对甲苯氧化甲基化(OMT)反应性能即分别从甲苯转化率、C₈化合物的选择性及ST/EB值等方面的影响进行了系统的考察，发现NaBr/KZSM-5催化剂对OMT反应活性较高，适当的NaBr负载量能提高OMT反应活性，并能获得苯乙烯含量很高的C₈芳烃产物。找出了OMT反应合适的反应温区及适宜的空速。用XRD、骨架IR研究了催化剂的结构。

关键词: KZSM-5沸石, 甲苯, 甲烷, 氧化甲基化

CLC Number:

O643

ZHOU Lingping,DU Daming,LI Xuanwen,WANG Shaokun,ZHOU Aiqiu,LIU Jian. Studies on the Catalytic Behaviors of NaBr/KZSM-5 Catalyst for the Oxidative Methylation of Toluene with Methane[J]. Acta Scientiarum Naturalium Universitatis Pekinensis.

周灵萍, 杜大明, 李宣文, 王少坤, 周爱秋, 刘建. NaBr/KZSM-5催化剂在甲苯氧化甲基化反应中的催化性能[J]. 北京大学学报（自然科学版）.

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Studies on the Catalytic Behaviors of NaBr/KZSM-5 Catalyst for the Oxidative Methylation of Toluene with Methane

NaBr/KZSM-5催化剂在甲苯氧化甲基化反应中的催化性能

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