CATALYST FOR ANHYDROUS OXIDATION OF BUTANE INTO MALEIC ANHYDRIDE Russian patent published in 1995 - IPC

FIELD: petrochemistry. SUBSTANCE: proposed catalyst contains oxygen-containing compounds of vanadium, phosphorous, zinc, lithium and molybdenum, molar ratio of said components being phosphorous:vanadium (0.9-1.3);1, lithium:vanadium (0.001-0.15):1, zinc:vanadium (0.001--0.15):1, molybdenum:vanadium (0.005-0.025): 1 respectively. Preferred surface of proposed catalyst is less 20 m²/g,, more preferable is surface 1 m²/g.. Crystallinity of said catalyst being 60-90 %. EFFECT: improves quality of catalyst. 4 cl, 14 tbl