CATALYSTS FOR SELECTIVITY REDUCING NITRIC OXIDES WITH METHANE Russian patent published in 1997 - IPC

FIELD: organic chemistry, environment control. SUBSTANCE: heterogeneous catalyst for selectivity reducing nitric oxides with hydrocarbons comprises as carries montmorillonite in amount 85-95 mas.% and cobalt in amount 5-15 mas. %; montmorillonite is used both in natural and in N-form. Catalyst may be used in industries discharging off-gases containing low-molecular hydrocarbons such as gas pumping stations, gas-fired and thermal power generating plants, etc. As compared to prototypes propose catalyst is cheaper, its manufacturing cost is brought down to 3-5 kg, simpler to manufacture and it improved conversion from 30 to 80% both in dry and humid atmosphere. EFFECT: higher efficiency. 2 cl, tbl