LAVES PHASE INTERMETALLIC COMPOUND, CATALYST USING INTERMETALLIC COMPOUND, AND METHOD FOR PRODUCING AMMONIA

摘要

The invention provides a Laves phase intermetallic compound having a composition represented by general formula ARu 2 (A is Y, Sc, or at least one element selected from lanthanoid elements excluding Ce), the crystallite size thereof being 1 nm to 100 nm; a catalyst including the intermetallic compound as an active ingredient; and a method for producing ammonia using the same.