Patent ID: 6464951
Filing Date: 2002-10-15
Classification: B01D,B01J

Abstract:
A process for treating a contaminated gas stream so as to reduce any phosgene content in said gas stream comprising the steps of:(a) providing a catalyst comprising at least one metal selected from the group consisting of copper, zinc, iron, tungsten, molybdenum, chromium, and mixtures thereof distributed over a catalyst support comprising a material containing at least one of silicon, titanium, zirconium, magnesium, aluminum, and activated carbon; (b) operating said catalyst at a temperature from about 0Â° C. to about 250Â° C. at a pressure from about 0.1 atm. to about 10 atm., and at a contact time of about 0.01 seconds to about 5 minutes; and (c) reducing said phosgene content in said gas stream by reacting said phosgene in said gas stream by placing said gas stream in contact with said catalyst.