Research progress of adsorption/activation and catalytic hydrogenation of CO_2

Growing emission of CO2 has brought serious consequences to the environment.At the same time,fossil energy is depleting,which challenges oil-based low carbon olefins industry.Using CO2 to produce carbon olefins is one of effective ways to alleviate the dual pressure of environment and resource.Thermodynamic analysis of CO2 hydrogenation to light olefins,adsorption/activation mechanism of CO2 on single crystal and oxides of transition metal and research progress of catalyst for hydrogenation of carbon dioxide to light alkenes are reviewed.The advantages and disadvantages of catalysts for CO2 hydrogenation,including single metal catalysts,bimetallic catalysts and the composite catalyst are analyzed.The problem of catalyst is how to balance selectivity and conversion rate.The future research directions of catalyst are mechanism of catalytic reaction,and catalyst preparation and modification.