设：N2+3H→2NH XN:XH2 X X H2 =rXN2 XH +XN +X=1 1-X X,=+r 1+r X2 X2 《.9 X2(1+r)4 =常数 r3(1-X)4 24 24 设：N2 +3H2 →2NH3 N2 X H2 X X H2 N2 X = rX 1 2 2 X H + X N + X = r r X X r X X N H + − = + − = 1 (1 ) , 1 1 2 2 3 2 3 2 ] 1 (1 ) )[ 1 1 2 2 ( r r X r X X X X X K N H X + − + − = = = − + = 3 4 2 4 (1 ) (1 ) r X X r 常数