| Oxidative Methylation of Toluene with Methane over Basic Zeolite Catalysts Promoted with Alkali Metal Bromides and Alkali Metal Oxides |
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| 引用本文： | Ling Ping ZHOU, Wei LI, Ke Yi TAO, Xuan Wen LI, He Xuan LI College of Chemistry and Molecular Engineering,Peking University,Beijing 100871 Department of Chemistry,Nankai University,Tianjin 300071. Oxidative Methylation of Toluene with Methane over Basic Zeolite Catalysts Promoted with Alkali Metal Bromides and Alkali Metal Oxides[J]. 中国化学快报, 2000, 11(9) |
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| 作者姓名： | Ling Ping ZHOU Wei LI Ke Yi TAO Xuan Wen LI He Xuan LI College of Chemistry and Molecular Engineering Peking University Beijing 100871 Department of Chemistry Nankai University Tianjin 300071 |
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| 作者单位： | Ling Ping ZHOU; Wei LI; Ke Yi TAO; Xuan Wen LI; He Xuan LI College of Chemistry and Molecular Engineering，Peking University，Beijing 100871 Department of Chemistry，Nankai University，Tianjin 300071 |
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| 基金项目： | The project was supported by the National Natural Science Foundation of China !(GrantNo.29803005)，China Postdoctoral Science |
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| 摘 要： | IntroductionStyrene is one of the most important industrial monomers. At present, styrene is mainlyproduced by alkylation of benzene with ethylene followed by oxidative dehydrogenationof the resulting ethylbenzene. However, this process is very expensive and complex. Anew method of synthesizing ethylbenzene and styrene directly from toluene and methanewas discovered by Khcheyan el al. ', and Yakovich and Bakareva2. The process wouldpotentially reduce the cost because of the production of sty…
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Oxidative Methylation of Toluene with Methane over Basic Zeolite Catalysts Promoted with Alkali Metal Bromides and Alkali Metal Oxides |
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| Ling Ping ZHOU,Xuan Wen LI,Wei LI,Ke Yi TAO,He Xuan LI. Oxidative Methylation of Toluene with Methane over Basic Zeolite Catalysts Promoted with Alkali Metal Bromides and Alkali Metal Oxides[J]. Chinese Chemical Letters, 2000, 11(9) |
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| Authors: | Ling Ping ZHOU Xuan Wen LI Wei LI Ke Yi TAO He Xuan LI |
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| Abstract: | The catalytic effects for the oxidative methylation of toluene with methane over the basic zeolite catalysts prepared by promoting KY,KX,KM,KZSM-5 or Kβ with alkali-metal bromides and alkali-metal oxides have been investigated comparatively.The alkali-metal bromides promoted substrates are more effective than the alkali-metal oxides promoted systems.Moreover, the NaBr promoted systems are more active than KBr promoted systems.The most effective catalytic system(8wt%NaBr)/KZSM-5 gave a toluene conversion as high as 76.3% and a total Cs selectivity of 76.4%(styrene/ethylbenzene=9.76)resulting in a total C8 yield of 58.3%. |
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| Keywords: | Styrene methane oxidative methylation alkali-metal oxides alkali-metal bromides. |
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