PROBLEM　TO　BE　SOLVED　:　　To　provide　a　ruthenium-based　catalyst　for　hydrogen　production　from　ammonia　decomposition　with　high　stability,　　high　decomposition　catalytic　activity　at　low　and　medium　temperatures,　　high　dispersion　of　ruthenium　metal　and　good　toxic　tolerance.
　　　　SOLUTION　:　　There　is　provided　a　ruthenium-based　catalyst　for　hydrogen　production　from　ammonia　decomposition,　　comprising　an　active　component,　　a　promoter　and　a　carrier,　　wherein　the　active　component　is　ruthenium,　　the　promoter　is　Cs　and/or　K.　There　is　also　provided　a　preparation　method　of　the　ruthenium-based　catalyst　for　hydrogen　production　from　ammonia　decomposition　including　the　steps　of　:　　1)　preparing　a　mixture　by　mixing,　　grinding　and　collecting　a　basic　magnesium　carbonate,　　an　activated　carbon,　　a　basic　cerium　carbonate,　　molybdenum　oxide,　　tungsten　oxide,　　barium　carbonate　and　a　carbonate　of　an　alkali　metal;　　2)　molding　the　mixture　to　obtain　a　molded　product;　　3)　impregnating　the　molded　product　in　an　aqueous　solution　of　a　precursor　of　Ru　and　an　aqueous　solution　of　a　precursor　of　Cs　and/or　K　successively,　　and　taking　out　the　impregnated　molded　product　after　the　impregnating　is　completed;　　and　4)　subjecting　the　impregnated　molded　product　to　drying,　　reduction　and　calcination　successively　to　obtain　the　ruthenium-based　catalyst　for　hydrogen　production　from　ammonia　decomposition.
　　　　SELECTED　DRAWING　:　　None
　　　　COPYRIGHT　:　　(C)2020,　JPO&INPIT