EXHAUST GAS PURIFICATION CATALYST, AND EXHAUST GAS PURIFICATION FILTER AND EXHAUST GAS PURIFICATION METHOD USING THE SAME

摘要

An exhaust gas purification catalyst includes: a support containing alumina as a major component; and an active species fine particle containing silver sulfate as a major component and having an average crystallite size of 3 nm to less than 100 nm, in which the active species fine particle is supported on a surface of the support.