Non-oxidative methane coupling over metal-containing Y-type zeolite catalysts

Abstract

Non-oxidative methane coupling over metal-containing Y-type zeolite catalysts was investigated in this research with Co, Ru and Pt. It has been found that catalytic activity of the metal catalyst prepared by ion exchange method was better than the metal catalyst prepared by impregnation method. Comparison with 10% Co/HY, 10% NaY shows the very low activity for non-oxidative methane coupling. In addition, the percentage of metal loading, the appropriate percentages of cobalt, ruthenium and platinum were 10, 15 and 15% by weight, respectively. The products from this reaction are ethane and propane. Propane was produced on 10% Co/HY and 15% Ru/HY, while ethane was occurred on 15% Ru/HY and 15% Pt/HY. With the effect of space velocity of methane, the amount of propane was decreased when the space velocity of methane was increased from 4960 h⁻¹ to 6200 h⁻¹. On the other hand the amount of ethane was increased. In hydrogenation step found that the amount of propane produced on 10% Co/HY was much higher in argon stream than hydrogen stream.