Prospect of Direct Dimethyl Ether Production from CO2: Reactor Design Development

The increasing emissions of carbon dioxide (CO2) and volatile hydrocarbons via burning fossil fuels result in a significant amount global warming air pollution. With the concern over impact fuel to environment, interest alternative production from CO2 generated through utilization new technologies has risen rapidly. Several clean fuels, including dimethyl ether (DME) have been investigated for more sustainable greener environment. DME high cetane number but produces much lower NOx emission upon combustion. is typically synthesized using syngas based on conventional indirect route, where process begins with conversion into methanol subsequently dehydrated separate units. Recently, direct single-step route produce dehydrogenation dehydration by utilising novel bifunctional catalyst investigated. In DME, occur simultaneously single reactor, which eliminate need plant. However, use fixed-bed reactor (FBR) synthesis causes many challenges deactivation, water appears reaction area, limiting reactants consequently, yield. It also essential manage exothermic heat better order overcome these hurdles, several types reactors proposed such as fluidized bed slurry microreactor catalytic membrane reactor. this paper, different are first discussed its applications related highlighted. Finally, difficulties development addressed future direction outlined.