Research progress on membrane reactor for CO2 hydrogenation to fuels
High-value CO2 utilization technologies,such as CO2 hydrogenation to methanol,can not only achieve CO2 recycling,but also generate significant social and economic value,which is an important way to achieve carbon neutrality.Research on catalysts for CO2 hydrogenation to methanol has matured,but the CO2 conversion efficiency is still lower than expected due to the limitations of thermodynamic equilibrium and catalyst deactivation induced by by-product water.Membrane reactor has been applied to overcome the thermodynamic limitation of CO2 hydrogenation reaction,which has played an important role in process intensification and greatly improved the efficiency of CO2 utilization.Against this background,the role of various membrane separation performances in improving the reaction properties in membrane reactors was systematically reviewed.The future opportunities and challenges of membrane reactors in CO2 hydrogenation to methanol are also presented.
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