CATALYST FOR EXHAUST GAS PURIFICATION, INTEGRAL CONSTRUCTION TYPE CATALYST FOR EXHAUST GAS PURIFICATION, AND METHOD FOR EXHAUST GAS PURIFICATION

摘要

PROBLEM TO BE SOLVED: To provide an oxidation catalyst for exhaust gas purification that can efficiently remove hydrocarbons (HC) and carbon monoxide (CO) in exhaust gases and has resistance against sulfur poisoning, a catalyst structure for exhaust gas purification containing the above catalyst, and a method for exhaust gas purification using the above catalyst structure.

SOLUTION: The catalyst for exhaust gas purification is a catalyst for exhaust gas purification containing a fibrous inorganic basic material/metal catalyst composite where a metal catalyst component (A) is supported by a whisker-like inorganic basic material (B). The metal catalyst component (A) contains at least a noble metal element and the whisker-like inorganic basic material (B) contains Al2O3as the main component and a zirconium component in the crystal and/or on the surface of the crystal and has a diameter of substantially 50 nm or less and an aspect ratio of 2 or higher.

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