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Preparation of double-metal cyanide catalysts incorporating ZnOAc and ZnOtBu components for propylene oxide/CO2 copolymerization

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DMC catalysts with varied ZnOAc and ZnOtBu components improve CO2 incorporation, suggesting enhanced polymerization efficiency.

DMC catalysts exhibited enhanced CO2 incorporation and productivity, achieving up to 5.0 kg g-cat-1 h-1.
Catalysts formulated using sequential treatment methods yielded poly(ether-co-carbonate) diols with narrow dispersity (Mw/Mn = 1.7).
Thin plate-like structures observed in SEM correlated with high catalytic performance due to efficient bimetallic polymerization mechanisms.
ZnOAc-rich DMC variants show substantial potential for improved ring-opening polymerization of propylene oxide and CO2.

Park et al. (2025) studied this question.

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