THE KINETICS OF THE METHANE DIMERIZATION REACTION
Abstract
The article studies the influence of parameters on the reaction rate of catalytic dimerization of methane, kinetic relations in the flow differential quartz reactor (P=0,1 MPa, Vcat =0.5÷2 ml, СН4:О2=2:4, contact time 0.1÷0.09 sec) in the temperature range of 750-580 ℃. The influence of temperature on methane conversion and product selectivity, the influence of oxygen and hydrogen impurities on methane conversion and acetylene selectivity, and the dependence of ethane selectivity on temperature were discussed. At different concentrations of methane with a volume ratio of СН4:О2=3:1 in the mixture, the influence of temperature parameters on selectivity for acetylene was studied, a reaction mechanism was proposed and a kinetic model was developed for obtaining ethane, ethylene, acetylene and acetic anhydride from methane.