| abstract |
A nitrogen-based reducing agent and (a) at least one transition metal dispersed on a mixed oxide or composite oxide or a mixture thereof as a support material comprising cerium and zirconium, or (b) inert At least one transition metal dispersed on a cerium oxide and zirconium oxide as a single oxide or a composite oxide thereof or a mixture of a single oxide and a composite oxide dispersed on an oxide support material A process for converting nitrogen oxides in a gas stream to nitrogen by contacting them in the presence of a non-zeolite base metal catalyst comprising: |