| 摘要 |
<p>1,132,445. Chloroethanes; vinyl chloride. MONSANTO CO. 23 Nov., 1965 [24 Nov., 1964], No. 49687/65. Addition to 1,097,884. Heading C2C. Dichloroethane is prepared by reacting ethane with HCl and O 2 in a first reaction zone in contact with a catalyst selected from siliceous materials not containing any metal chloride, activated alumina, manganous chloride supported on activated alumina, calcium chloride supported on activated alumina and lithium chloride supported on activated alumina, at elevated temperature to produce a gaseous reaction mixture of which the reactive ingredients consist predominantly of ethylene and HCl, and passing the said gaseous reaction mixture, without separation, together with O 2 into a second reaction zone in contact with an oxychlorination catalyst to effect oxidative chlorination of the ethylene therein to dichloroethane. Ethyl chloride and vinyl chloride are present in the effluent from the first reaction zone and ethyl chloride and trichloroethane are present in the effluent from the second reaction zone.</p> |
