| 摘要 |
An exhaust gas purification system that is equipped, from an upstream side toward downstream side through which an exhaust gas flows, with a plasma reactor and a NO<SUB>x </SUB>selective reduction catalyst unit having a NO<SUB>x </SUB>selective reduction catalyst layer acting on the exhaust gas, and which system provides a reducing agent adding means adding a reducing agent to the exhaust gas at an upstream side of the plasma reactor, wherein the NO<SUB>x </SUB>selective reduction catalyst layer comprises nickel and a NO<SUB>x </SUB>selective reduction catalyst or wherein the NO<SUB>x </SUB>selective reduction catalyst layer contains gamma-alumina that supports magnesium or wherein the NO<SUB>x </SUB>selective reduction catalyst unit comprises a first purification unit where an exhaust gas via the plasma reactor is introduced, and a second purification unit where an exhaust gas via the first purification unit is introduced.
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