| 摘要 |
<p>C23-54-0077A PHOSPHORUS-VANADIUM-OXYGEN CATALYST PRECURSORS AND CATALYSTS Heat treatment of phosphorus-vanadium-oxygen catalyst precursors at temperatures between about 150.degree. C. and about 300.degree. C. for a period of about 1 hour to about 6 hours prior to being subjected to calcination conditions yields catalyst precursors having increased crush strength and attrition resistance. The catalyst precursors, upon calcination, are converted to phosphorus-vanadium-oxygen catalysts which are useful for the conversion of nonaromatic hydrocarbons, particularly n-butane, to maleic anhydride.</p> |
