Abstract:
The synthesis of dimethyl carbonate and propylene glycol from methanol, propylene oxide (PO), and carbon dioxide over various catalysts was reported. The influences of active components and various reaction conditions e.g. temperature, CO2 pressure, reaction time, molar ratio of CH3OH/PO on the reaction were investigated. Among the used catalysts, NaOH supported with a 15% loading, on activated carbon heat treated at 600 ℃ in Ar atmosphere exhibits the best catalytic performance in terms of the conversion of methanol and PO, the selectivity to DMC and PG. Under the reaction conditions of 423 K, 4-0 MPa initial, 28-1% and 99-9% conversion of methanol and PO, 39-8%, 40-5% selectivity of DMC and PG were achieved over the NaOH/C catalyst.
