Hydrogenation of CO2on the polymetallic catalysts prepared by self-propagating high-temperature synthesis

A new class of multifunctional polymetallic catalysts was developed, the precursors of which are complex multicomponent intermetallic compounds prepared by self-propagating high-temperature synthesis. The catalysts based on Co and Ni exhibit high activity in the hydrogenation of CO(2)to methane. The maximum yield of methane is observed at 250-350 degrees C with an almost complete conversion of CO(2)and 100% selectivity. Hydrocarbons C-1-C-4, including unsaturated hydrocarbons (propylene and butadiene), were synthesized on the Co-Fe-La catalyst under a pressure to 2 MPa at 250-350 degrees C and the ratio CO2: H-2= 1: 1. The new class of catalysts is promising for the development of direct CO(2)hydrogenation to heavy (liquid) alkanes and unsaturated hydrocarbons.