Citation: Ling Ping ZHOU, Wei LI, Ke Yi TAO, Xuan Wen LI, 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): 827-830.
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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 C8 selectivity of 76.4% (styrene/ethylbenzene=9.76) resulting in a total C8 yield of 58.3%.
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