Preparation Of Bifunctional Catalysts And Catalytic Reduction Of Carbon Dioxide

Condiserable quantities of CO2 were exausted into the atmosphere due to the massive use of fossill fuels,which would,as a result,cause irreversable damage to our plannet.Using CO2 as carbon resource to produce valuable chemicals with the presence of catalyst is a practical solution to this problem,which meets well with current tendency of green chemistry and sustainable development.Amoung the many pathways of CO2 utilization,CO2 catalytic N-formylation with amines is one of those newest reactions,in which case,the CO2 molecule was introduced into the nitrogeon atom to form a formyl group.For the catalytic reduction reaction of C02 to produce N-formanilide,a highly active catalyst with good recyclability is the key factor.This paper prepared nanosized Pd/TiO2 catalyst and AuPd/TiO2 bimetallic catalyst via sol-gel method.At the same time,one of the MOFs materials,MIL-101(Fe),was also synthesized through solvothermal method and then loaded with Pd on the surface to prepare Pd/MIL-101(Fe).These samples were characterized by BET,XRD,HRTEM,FT-IR,XPS to detect the physical structures and chemical properties.The catayitic performance was evaluated by the CO2/H2 catalytic reduction reaction,and the reaction conditions were optimized.The details are shown as follow.1.The characterization result of Pd/TiO2 catalyst shows that the metallic Pd nanoparticles were evenly dispersed on the surface with an average...