The Versalis/Lummus Technology diphenyl carbonate (DPC) process produces diphenyl carbonate by reacting dimethyl carbonate with phenol. By-product methanol can be recycled to upstream dimethyl carbonate production. There are no environmental or corrosion issues. Since Lummus Technology also offers the Versalis/Lummus Technology dimethyl carbonate (DMC) process, there are opportunities for energy integration as well when both DMC and DPC are produced.