| abstract |
catalytic composition and its production process for use in the manufacture of methacrolein and / or acrolein. by reaction with isobutene, t-butanol or propylene, the catalytic composition represented by the formula: x (mol2biafebcocadbeof) / yz, moi2biafebcocadbeof is an oxide compound. z is a catalyst vehicle, being graphite, boron, silicon, germanium powder or one of their mixtures. mo, bi, fe, co and o are the chemical symbols of molybdenum, bismuth, iron, cobalt and oxygen, respectively. a is w, v, ti, zr, nb, ni or re. b is k, rb, cs, sr or ba. The catalyst is adapted not only to stimulate high activity, high selectivity methacrolein production, but also to effectively control the catalyst warm-up point during the methacrolein manufacturing process to extend catalyst life. |