METHOD FOR PREPARING CATALYST USED IN SYNTHESIS OF AMMONIA AND METHOD FOR SYNTHESIZING AMMONIA

摘要

PROBLEM TO BE SOLVED: To provide a method for preparing a highly active ruthenium catalyst having ruthenium carried on active carbon which is used for synthesis of ammonia and a method for synthesizing ammonia using the same. SOLUTION: The catalyst having ruthenium carried on active carbon is prepared by a process comprising the steps of adding an alkaline metal salt or an alkaline earth metal salt to the catalyst precursor having ruthenium carried on active carbon treated with hydrogen, then raising the temperature to 350 to 400 deg.C under hydrogen atmosphere, followed by heating the resultant catalyst precursor to 500 to 600 deg.C at a heating speed of 10-60 deg.C to subject to an activation treatment. The synthesis of ammonia is conducted by using the catalyst having ruthenium carried on active carbon.