Portal de Periódicos da CAPES

Preparation of H3PMo12O40 catalyst immobilized on polystyrene support and its application to the methacrolein oxidation

2006; Elsevier BV; Volume: 248; Issue: 1-2 Linguagem: Inglês

10.1016/j.molcata.2005.12.011

1873-314X

Hee‐Soo Kim, Ji Chul Jung, Sung Ho Yeom, Kwan‐Young Lee, In Kyu Song,

Carbon dioxide utilization in catalysis

H3PMo12O40 (PMo) catalyst was immobilized on the aminated polystyrene (PS) support as a charge compensating component, by taking advantage of the overall negative charge of [PMo12O40]3−. It was revealed that PMo catalyst was finely and molecularly dispersed on the PS support via chemical immobilization. The supported H3PMo12O40–polystyrene (PMo–PS) catalyst was applied to the vapor-phase oxidation of methacrolein into methacrylic acid, a typical surface-type reaction. The PMo–PS catalyst exhibited higher conversion of methacrolein and higher selectivity for methacrylic acid than the unsupported PMo catalyst. It is concluded that [PMo12O40]3− species were chemically and finely immobilized on the PS support as charge matching species, and thus, the PMo–PS catalyst showed an excellent oxidation activity in the model surface-type reaction.