Catalyst and production process thereof, and chlorine production using the catalyst

Abstract

A catalyst has high activity and is suitable for use in producing chlorine by oxidizing hydrogen chloride with oxygen. The catalyst includes copper, an alkali metal and a rare earth and has pores of which pores having a diameter of 5 to 15 nm have a pore volume of 0.4 to 2.0 ml/g.

1 . A catalyst comprising copper, an alkali metal and a rare earth and having pores of which pores having a diameter of 5 to 15 nm have a pore volume of 0.4 to 2.0 ml/g, the rare earth being samarium; praseodymium; or europium. 
     
     
         2 . The catalyst according to  claim 1 , wherein the catalyst has a specific surface area of 100 to 500 m 2 /g. 
     
     
         3 . The catalyst according to  claim 1 , wherein the catalyst has a specific surface area of 170 to 500 m 2 /g. 
     
     
         4 . The catalyst according to  claim 1 , wherein the catalyst contains copper at 1 to 11 wt % based on 100 wt % of the catalyst, and the copper: rare earth weight ratio is in the range of 1:0.6 to 1:1.5 and the copper:alkali metal weight ratio is in the range of 1:0.4 to 1:1.0. 
     
     
         5 . The catalyst according to  claim 1 , wherein the alkali metal is potassium.