Non-oxidative coupling of methane catalysed by supported tungsten hydride onto alumina and silica-alumina in classical and H_2 permeable membrane fixed-bed reactors

摘要

Non-oxidative coupling of methane with high selectivity into ethane (>99% among hydrocarbon) in a classical fixed-bed reactor catalysed by SiO_2-Al_2O_3 or γ-Al_2O_3 supported tungsten hydride is presented. Continuous hydrogen separation, using a Pd-Ag membrane in a fixed-bed reactor, led to methane coupling far beyond the thermodynamic equilibrium conversion.