Nonoxidative methane conversion into aromatic hydrocarbons on tungsten-containing pentasils

The effects of the tungsten concentration and of the method of tungsten introduction into ZSM-5 pentails with different SiO2/Al2O3 molar ratios on the acidity and the activity of the resulting catalysis in nonoxidative methane conversion into aromatic hydrocarbons are considered. The catalysts obtained from the SiO2/Al2O3 = 40 pentasil and a nanosized tungsten powder are the most active and the most stable. The maximum methane conversion and the highest yield of aromatic hydrocarbons are achieved on the zeolite containing 8.0 wt % tungsten nanopowder.