An experimental kinetic model for the oxidative coupling of methane using a bench-scale reactor

作者：Yaghobi Nakisa; Ghoreishy Mir Hamid Reza^*; Eslamimanesh Vahid

来源：Asia-Pacific Journal of Chemical Engineering, 2008, 3(2): 202-210.

DOI：10.1002/apj.116

• oxidative coupling of methane
• perovskite catalyst
• fixed-bed reactor
• catalytic reaction
• kinetics

The aim of this work is to develop a kinetic model for the oxidative coupling of methane (OCM) based on the gas-hourly space velocity (GHSV) and methane-to-oxygen ratio. The experiments were carried out in a bench-scale tubular-fixed bed reactor, using 30 g of perovskite titanate as the reaction catalyst. Different GHSVs (3000-6000 h(-1)) and methane-to-oxygen ratios (2,2.5 and 3) were selected. A mechanism was assumed in which the consumption rate of methane is always twice the production rate of C(2) hydrocarbons. A power-law model was assumed for rate of reaction in terms of partial pressure of oxygen and methane. Using a linear regression analysis, the kinetic model was determined. Comparison of the calculated rate of reaction with the experimentally measured data confirmed the accuracy and applicability of the developed model under various reaction conditions.

• 出版日期2008-4