Properties of Heusler alloys as catalysts

Abstract

Intermetallic compounds can be novel catalysts because of their unique electronic structures and ordered surface structures. In Heusler alloys (X₂YZ), novel catalysts would be discovered from many possible sets of X, Y, and Z. Component elements can be substituted by others in many cases, which enables a fine control of catalysis. I have investigated catalytic properties of Heusler alloys that were unknown as catalysts. A discovery of good catalysts for selective hydrogenation of alkynes and a systematic control of catalysis were achieved using powder catalysts synthesized metallurgically. A durability and roles of X, Y, and Z were also investigated. Recently, nanoparticle catalysts were successfully synthesized.