简介 |
Provided is a catalyst carrier which contains an apatite-type composite oxide and provides a catalyst carrier which can enhance NOx purifying performance by means of improvement of phosphorus poisoning. Provided is a catalyst carrier which contains a composite oxide expressed by the following composition formula : LaxPryM10.00-x-y(Si6.00-wNw)O27.00-z (wherein 2.50≦x≦6.00, 2.50≦y≦6.00, 5.00≦x+y≦9.50, 0.00≦z≦3.00, 0.00≦w≦3.00, M represents one or two or more elements selected from alkaline earth metal elements and rare earth elements, and N represents at least one kind of cation element). |