More particularly, disclosed is a catalytic process for the conversion of methane to C2 + hydrocarbons, particularly hydrocarbons rich in ethylene or benzene, or both....http://www.google.com/patents/US4704487?utm_source=gb-gplus-sharePatent US4704487 - Conversions of low molecular weight hydrocarbons to higher molecular weight hydrocarbons using a metal compound-containing catalyst (IV-B)Advanced