Preparation and Characterization of Fe-Base Catalyst for Reverse-Water-Gas-Shift Reaction

Preparation and Characterization of Fe-Base Catalyst for Reverse-Water-Gas-Shift Reaction
　　Recycle of CO2 is urgent because of its emission threaten environment fearfully. Reverse Water Gas Shift Reaction(RWGS) is one of the most important approach in the reusing of CO2. Co-precipitation was used to prepare iron manganeses mixed oxides for the RWGS. The catalysts samples were studied by Micro-reactor,XRD,TPR,BET and TEM. The emphasis is to optimize composite and structure of the catalysts with robust activity and thermostability.The activity of catalyst prepared by Fe2+ and Fe3+ starting materials is superior to that of catalyst prepared by individual Fe2+ or Fe3+. Manganese dopant into the iron oxides enhances its activity and thermostability. magnet lifter Fe/Mn based catalyst present higher activity and thermostability than that of Cu/Mn、Zn/Mn based catalyst.. The optimization composition is Fe2+/Fe3+/Mn=42:16:42.Additives rare earths can further improve activity and thermostability no matter Fe or Fe/Mn catalysts. Co adulterant of CeO2 http://www.999magnet.com/ and La2O3 can promote the activity and thermostability of manganeses mixed oxides for the reverse water gas shift reaction.