Na2WO4/Mn/SiO2 Catalyst Pellets for Upgrading H2S-Containing Biogas via the Oxidative Coupling of Methane

Biogas is a promising renewable energy source; however, it needs to be upgraded increase its low calorific value. In this study, oxidative coupling of methane (OCM) was selected convert higher fuel standard. Prior establishing the scaled-up OCM process, effect organic/inorganic binders on catalytic activity examined. The selection and composition catalyst pellet influenced pore structure, fracture strength, pellets. It also observed that O2 supply from inorganic binder key factor in determining activity, based which pellets optimized. heating value increased 39.9 (CH4, Wobbe index = 53.5 MJ/Nm3) 41.0 MJ/Nm3 (OCM product mixture, 54.2 MJ/Nm3), achieving standard prescribed many countries (Wobbe 45.5–55.0 MJ/Nm3). reaction parameters (temperature, gas hourly space velocity, size system, CH4/O2 ratio) were optimized, followed by sensitivity analysis. Furthermore, stable for long-term (100 h) operation under optimized conditions.