CATALYST FOR PREPARING VINYL CHLORIDE BY CRACKING 1,2-DICHLOROETHANE AND PREPARATION AND REGENERATION METHODS THEREFOR

摘要

A catalyst for preparing chloroethylene by cracking 1,2-dichloroethane and a preparation and regeneration method thereof are disclosed in the present application. A catalyst for preparing chloroethylene by cracking 1,2-dichloroethane comprises a carrier and a nitrogen-containing carbon as an active component of the catalyst with the nitrogen-containing carbon being loaded on the carrier. The method for preparing the catalyst comprises the following steps: supporting an organic matter on an inorganic porous carrier and then performing a carbonization-nitridation process by pyrolysis in an atmosphere containing the nitrogen-containing compound. The method for regenerating the catalyst comprises the following steps: calcinating the catalyst with deactivated carbon deposit in an oxidizing atmosphere to remove all the carbonaceous portions on the surface, and repeating the above preparation process of the catalyst. The catalyst could reduce the reaction temperature, greatly reduce energy consumption, reduce the production cost, and improve the selectivity and conversion rate and is inexpensive and reproducible, and has a long service life in comparison with the existing thermal cracking technology.