Catalyst for producing an olefin from an alcohol, method for producing olefin, polyolefin, and olefin oxide

Abstract

Disclosed are a catalyst for producing, from an alcohol, an olefin whose number of carbon atoms is at least one more than the number of carbon atoms of the alcohol, wherein at least the surface of the catalyst is substantially composed of zirconium oxide; a method for producing an olefin using the same; and so on.

1 . A solid catalyst for producing, from an alcohol, an olefin whose number of carbon atoms is at least one more than the number of carbon atoms of the alcohol, wherein
 at least the surface of the catalyst is substantially composed of zirconium oxide.   
     
     
         2 . The catalyst according to  claim 1 , wherein the whole of the catalyst is substantially composed of zirconium oxide. 
     
     
         3 . The catalyst according to  claim 1 , wherein the alcohol is ethanol, and the olefin is propylene. 
     
     
         4 . The catalyst according to  claim 1 , wherein the zirconium oxide has a structure of either a tetragonal crystal or a cubic crystal. 
     
     
         5 . A method for producing an olefin including an olefin formation step of forming, from an alcohol, an olefin whose number of carbon atoms is at least one more than the number of carbon atoms of the alcohol, wherein
 in the olefin formation step, the alcohol is brought into contact with the catalyst according to  claim 1  at a temperature of from 300° C. to 700° C.   
     
     
         6 . The method for producing an olefin according to  claim 5 , wherein the alcohol contains water in an amount of not more than 7 molar times the molar number of the alcohol. 
     
     
         7 . The method for producing an olefin according to  claim 5 , wherein the alcohol is brought into contact with the catalyst at a gauge pressure of 50 kPa or more. 
     
     
         8 . The method for producing an olefin according to  claim 5 , wherein the alcohol is ethanol, and the olefin is propylene. 
     
     
         9 . A polyolefin produced using, as a raw material, an olefin produced by the method according to  claim 5 . 
     
     
         10 . An olefin oxide produced using, as a raw material, an olefin produced by the method according to  claim 5 .