| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a catalyst excellent in catalytic activity and selectivity. <P>SOLUTION: When the catalyst which contains molybdenum, bismuth and iron and is used for synthesizing unsaturated aldehyde and unsaturated carboxylic acid is manufactured by drying slurry containing a molybdenum raw material, a bismuth raw material and an iron raw material and firing the obtained dried material, bismuth trioxide and/or bismuth subcarbonate are used as the bismuth raw material and the height of a layer of the dried material is adjusted to <20 mm in the initial stage of the firing work and the firing work is continued. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
