| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an oxide catalyst for production of unsaturated nitriles and unsaturated carboxylic acids reducing scattering of molybdenum and having a high selectivity, a high yield, a high space time yield and a high catalyst strength. <P>SOLUTION: This catalyst is for ammooxidation or oxidation of propane and isobutane, contains molybdenum, vanadium, antimony and niobium and has an X-ray diffraction peak at a specific position, a low content of molybdenum and a high content of silica serving as a catalyst carrier. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
