| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catalyst which is capable of stably manufacturing acrylonitrile and the like with high yields for a long time under conditions with a reduced amount of ammonia that is excess to propylene and the like when acrylonitrile and the like are manufactured by the ammoxidation reaction using propylene and the like. <P>SOLUTION: The ammoxidation catalyst for the fluidized-bed is used for manufacturing acrylonitrile and the like by the reaction between propylene and the like, molecular oxygen and ammonia, has an element composition represented by general formula (1): Mo<SB>a</SB>Bi<SB>b</SB>Ce<SB>c</SB>Fe<SB>d</SB>E<SB>e</SB>J<SB>f</SB>G<SB>g</SB>L<SB>h</SB>O<SB>i</SB>, wherein E denotes Ni and the like, J denotes Mg and the like, G denotes Sb and the like, and L denotes K and the like and a-i each denotes the atomic ratio (specific numerical range) of each element, and is equipped with an oxide which satisfies the range of α and β: 0.02≤α≤0.08, 0.08≤β≤0.35 wherein α and β are computed by formula (2); α=1.5(b+c)/(1.5d+e+f) and formula (3); β=1.5d/(e+f) from the atomic ration of each element, and a carrier having the oxide supported. <P>COPYRIGHT: (C)2010,JPO&INPIT |
