| 摘要 |
A process for the production of phosgene (COCl2) comprising first reacting perchloroethylene (CCl2=CCl2) with hydrogen chloride and oxygen in the presence of a first catalyst to give hexachloroethane and water, separating the hexachloroethane, and second reacting the hexachloroethane from the first step with carbon monoxide in the presence of a second catalyst to produce perchloroethylene and phosgene which is separated from the perchloroethylene before the latter is recycled to the first step.
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