Journal
CATALYSIS LETTERS
Volume 65, Issue 1-3, Pages 123-126Publisher
BALTZER SCI PUBL BV
DOI: 10.1023/A:1019033725260
Keywords
dimethyl carbonate (DMC); oxidative carbonylation; CuCl2 immobilization; corrosion resistance
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A pi-conjugated polymer, poly(pyridine-2,5-diyl) (PPy) was investigated as a support for CuCl2 in the synthesis of dimethyl carbonate by oxidative carbonylation of methanol. The PPy-CuCl2 adduct had high catalytic activity which was comparable to that of the homogeneous CuCl2 catalyst. The adduct caused corrosion of stainless-steel vessels only to minor extent, compared with the homogeneous CuCl2 catalyst. This PPy-CuCl2 catalyst was easily recycled by filtration and showed a similar catalytic activity in the third time use. The presence of the pi-conjugated system in PPy, through which electrons can move, may bring about the high catalytic activity for the oxidative carbonylation of methanol, which involves Cu(II)/Cu(I) redox processes.
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