Method for the removal of NOx and catalyst therefor

A method for the catalytic reduction of NOx in an NOx containing gas by contacting said NOx containing gas with methane in the presence of a catalyst comprising a zeolite loaded with palladium and a metal selected from the group consisting of scandium, yttrium, a lanthanide and a combination thereof, said zeolite based on rings having 12 oxygen atoms, and wherein an additional catalyst is used for the removal of N2O.

A method for the catalytic reduction of NOx in an NOx containing gas by contacting said NOx containing gas with methane in the presence of a catalyst comprising a zeolite loaded with palladium and a metal selected from the group consisting of scandium, yttrium, a lanthanide and a combination thereof, said zeolite based on rings having 12 oxygen atoms, and wherein an additional catalyst is used for the removal of methane.

A method for the catalytic reduction of NOx in an NOx containing gas by contacting said NOx containing gas with methane in the presence of a catalyst comprising a zeolite loaded with palladium and a metal selected from the group consisting of scandium, yttrium, a lanthanide and a combination thereof, said zeolite based on rings having 12 oxygen atoms, wherein the zeolite is loaded with scandium, yttrium, a lanthanide or a combination thereof by physically mixing the zeolite with salts or oxides of said metals, and further wherein an additional catalyst is used for the removal of N2O.

A method for the catalytic reduction of NOx in an NOx containing gas by contacting said NOx containing gas with methane in the presence of a catalyst comprising a zeolite loaded with palladium and a metal selected from the group consisting of scandium, yttrium, a lanthanide and a combination thereof, said zeolite based on rings having 12 oxygen atoms, wherein the zeolite is loaded with scandium, yttrium, a lanthanide or a combination thereof by physically mixing the zeolite with salts or oxides of said metals, and further wherein an additional catalyst is used for the removal of methane.

A catalyst comprising a zeolite loaded with palladium and a metal selected from the group consisting of scandium, yttrium, a lanthanide and a combination thereof, said zeolite based on rings having 12 oxygen atoms, wherein the palladium in the zeolite is wholly or partially coordinated as ion by the zeolite, and wherein said zeolite is loaded with 0.02 to 2% by weight of palladium.

A method for the preparation of a zeolite loaded with palladium and a metal selected from the group consisting of scandium, yttrium, a lanthanide and a combination thereof, said zeolite based on rings having 12 oxygen atoms, wherein the zeolite is loaded with scandium, yttrium, a lanthanide or a combination thereof and optionally other metals after having been loaded with palladium by ion exchange.

A method for the catalytic reduction of NOx in an NOx containing gas by contacting said NOx containing gas with methane in the presence of a catalyst comprising a zeolite loaded with palladium and yttrium, wherein said zeolite is based on rings having 12 oxygen atoms.

A method for the catalytic reduction of NOx in an NOx containing gas by contacting said NOx containing gas with methane in the presence of a catalyst comprising a zeolite loaded with palladium and yttrium, wherein said zeolite based on rings having 12 oxygen atoms, and said zeolite is loaded with yttrium by physically mixing the zeolite with salts or oxides of yttrium.

A catalyst comprising a zeolite loaded with palladium and yttrium, said zeolite based on rings having 12 oxygen atoms, wherein the palladium in the zeolite is wholly or partially coordinated as ion by the zeolite.