Katalysator for syntese av ammoniakk

摘要

The invention relates to a catalyst for the synthesis of ammonia from hydrogen and nitrogen, comprising iron oxides and promoters of Al, K, Ca and Mg oxides and where said catalyst in addition comprises a promoter of Ti02 in the amount of 0.3 - 2.5 weight % and a promoter of Zr02. The content of Zr02 is 0.05 - 2 weight %, preferably 0.05 - 1.0 weight %. The catalyst may also comprise a promoter of Ce02, which partly replaces Zr02.