Patent ID: 8735608

Claim:
A method of forming dialkyl carbonate and diol products in an integrated process comprising: reacting an alkylene oxide with carbon dioxide in the presence of a metal organic framework (MOF) catalyst with less than 0.5 mol % of any potassium or quaternary ammonium salts present based on moles of alkylene oxide feed present in a first reaction zone under reaction conditions to form a crude cyclic carbonate product; and feeding the crude cyclic carbonate product from the first reaction zone wherein the crude carbonate product does not undergo any purification or separation, other than the optional removal of any portion of unreacted alkylene oxide, carbon dioxide, and light hydrocarbon gases, to a second reaction zone containing a transesterification catalyst along with an aliphatic monohydric alcohol and allowing the cyclic carbonate product and monohydric alcohol to react under reaction conditions to form the dialkyl carbonate and diol products.