EXHAUST GAS PURIFICATION CATALYST,AND EXHAUST GAS PURIFICATION APPARATUS AND EXHAUST GAS PURIFICATION METHOD EACH USING THE CATALYST

摘要

A catalyst for purification of exhaust gas, in which a noble metal is supported on a metal oxide support, has a basic site content of 1 mmol/L-cat or less, as determined on the basis of an amount of CO 2 desorbed per liter of the catalyst as measured by a CO 2 temperature-programmed desorption method.