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. shu

Oxidative Methylation of Toluene with Methane over Basic Zeolite Catalysts Promoted with Alkali Metal Bromides and Alkali Metal Oxides

a College of Chemistry and Molecular Engineering, Peking University, Beijing 100871;
b Department of Chemistry, Nankai University, Tianjin 300071

Received Date: 20 March 2000

Fund Project: The project was supported by the National Natural Science Foundation of China (Grant No.29803005) and China Postdoctoral Science Foundation.

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%.
- Styrene,
- methane,
- oxidative methylation,
- alkali-metal oxides,
- alkali-metal bromides
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