Hydrogenation of CO 2 on 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 CO2 to methane. The maximum yield of methane is observed at 250–350 °C with an almost complete conversion of CO2 and 100% selectivity. Hydrocarbons C1-C4, including unsaturated hydrocarbons (propylene and butadiene), were synthesized on the Co-Fe-La catalyst under a pressure to 2 MPa at 250–350 °C and the ratio CO2: H2 = 1: 1. The new class of catalysts is promising for the development of direct CO2 hydrogenation to heavy (liquid) alkanes and unsaturated hydrocarbons.