Selective Oxidation of Isobutene to Methacrolein over Molybdenum-based Multiphasic Oxide Catalysts

Abstract

Abstract:

The molybdenum-based multiphasic oxide catalysts were prepared and tested in the selective oxidation of isobutylene to methacrolein reaction. The structure and crystal phase of catalysts were characterized by means of XRD, TPR and FTIR methods. The characterization results showed that the adding of bismuth into molybdenum catalysts could enhance the catalytic performance. The adding of iron and cobalt could change the structure and crystal phase of catalysts and significantly improved the conversion of isobutene and selectivity of methacrolein. The results indicate that the synergetic or cooperation effects between multiphasic oxides and the some special phases may be the key role for increasing the catalytic performance. The conversion of isobutene and selectivity of methacrolein can reached 99.9% and 88.7% over the best composed catalyst, respectively.

Key words: Molybdenum; Multiphasic oxide; Isobutene; Selective oxidation

TrendMD:

QU Yuan-Li, LIU Shi-Yan, WANG Zhen-Lü*, XU Jia-Ning*. Selective Oxidation of Isobutene to Methacrolein over Molybdenum-based Multiphasic Oxide Catalysts[J]. Chem. J. Chinese Universities, 2010, 31(2): 325.

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