Green chemistry perspectives of methane conversion via oxidative methylation of aromatics over zeolite catalysts

摘要: Methane gas is known to be the most destructive greenhouse gas. The current world reserves of natural gas, which contains mainly methane, are also still underutilized due high transportation costs. Thus, considerable interest presently shown in conversion methane transportable liquid fuels and chemicals importance petrochemical industry. catalytic methylation aromatics one possible new route for converting more valuable higher hydrocarbons. This paper provides a general overview recent work that we other researchers have done on utilisation aromatic compounds direct coal liquefaction production In particular, presents detailed description substantial experimental evidence provided requirement oxygen as stoichiometry reactant benzene with over moderately acidic zeolite catalysts. reaction, has been termed “oxidative methylation”, was thus postulated involve two-step mechanism involving intermediate methanol formation by partial oxidation, followed second step. However, strongly zeolites can cause cracking yield methylated products absence oxygen. participation oxygen, effective use catalysts this reaction definitely some positive green chemistry implications. results these previous studies discussed review light principles tools chemistry. Various metrics were used evaluate greenness, cost-effectiveness, material energy efficiency oxidative reaction.