Carrier for exhaust gas purification catalyst, catalyst for exhaust gas purification, and catalyst structure for exhaust gas purification

Abstract

The disclosed exhaust gas purification catalyst carrier includes a modified aluminum borate which contains aluminum borate and at least one addition element selected from the group consisting of a rare earth element and an alkaline earth metal and which has an electronegativity of 2.732 or lower.

1 - 6 . (canceled) 
     
     
         7 . An exhaust gas purification catalyst carrier, comprising a modified aluminum borate which contains aluminum borate and at least one addition element selected from the group consisting of a rare earth element and an alkaline earth metal and which has an electronegativity of 2.732 or lower. 
     
     
         8 . An exhaust gas purification catalyst carrier, comprising a modified aluminum borate which contains aluminum borate and at least one addition element selected from the group consisting of a rare earth element and an alkaline earth metal, in an amount of 6 mass % or more as an oxide thereof. 
     
     
         9 . An exhaust gas purification catalyst carrier according to  claim 7 , wherein the addition element contains two or more elements. 
     
     
         10 . An exhaust gas purification catalyst carrier according to  claim 8 , wherein the addition element contains two or more elements. 
     
     
         11 . An exhaust gas purification catalyst carrier according to  claim 7 , wherein the addition element is an element selected from the group consisting of Ca, Sr, Ba, La, Pr, Nd, and Ce. 
     
     
         12 . An exhaust gas purification catalyst carrier according to  claim 8 , wherein the addition element is an element selected from the group consisting of Ca, Sr, Ba, La, Pr, Nd, and Ce. 
     
     
         13 . An exhaust gas purification catalyst carrier according to  claim 9 , wherein the addition element is an element selected from the group consisting of Ca, Sr, Ba, La, Pr, Nd, and Ce. 
     
     
         14 . An exhaust gas purification catalyst carrier according to  claim 10 , wherein the addition element is an element selected from the group consisting of Ca, Sr, Ba, La, Pr, Nd, and Ce. 
     
     
         15 . An exhaust gas purification catalyst, comprising an exhaust gas purification catalyst carrier as recited in  claim 7 , and Pd supported on the carrier. 
     
     
         16 . An exhaust gas purification catalyst, comprising an exhaust gas purification catalyst carrier as recited in  claim 8 , and Pd supported on the carrier. 
     
     
         17 . An exhaust gas purification catalyst, comprising an exhaust gas purification catalyst carrier as recited in  claim 9 , and Pd supported on the carrier. 
     
     
         18 . An exhaust gas purification catalyst, comprising an exhaust gas purification catalyst carrier as recited in  claim 10 , and Pd supported on the carrier. 
     
     
         19 . An exhaust gas purification catalyst, comprising an exhaust gas purification catalyst carrier as recited in  claim 11 , and Pd supported on the carrier. 
     
     
         20 . An exhaust gas purification catalyst, comprising an exhaust gas purification catalyst carrier as recited in  claim 12 , and Pd supported on the carrier. 
     
     
         21 . An exhaust gas purification catalyst, comprising an exhaust gas purification catalyst carrier as recited in  claim 13 , and Pd supported on the carrier. 
     
     
         22 . An exhaust gas purification catalyst, comprising an exhaust gas purification catalyst carrier as recited in  claim 14 , and Pd supported on the carrier. 
     
     
         23 . An exhaust gas purification catalyst product, comprising a catalyst support formed of a ceramic or metallic material, and a layer of an exhaust gas purification catalyst as recited in  claim 15 , the layer being supported on the catalyst support. 
     
     
         24 . An exhaust gas purification catalyst product, comprising a catalyst support formed of a ceramic or metallic material, and a layer of an exhaust gas purification catalyst as recited in  claim 16 , the layer being supported on the catalyst support. 
     
     
         25 . An exhaust gas purification catalyst product, comprising a catalyst support formed of a ceramic or metallic material, and a layer of an exhaust gas purification catalyst as recited in  claim 17 , the layer being supported on the catalyst support. 
     
     
         26 . An exhaust gas purification catalyst product, comprising a catalyst support formed of a ceramic or metallic material, and a layer of an exhaust gas purification catalyst as recited in  claim 18 , the layer being supported on the catalyst support.