Catalyst for lpg production

Abstract

A catalyst for producing a liquefied petroleum gas according to the present invention comprises a Pd-based methanol synthesis catalyst component and a β-zeolite catalyst component. It can be used in a reaction of carbon monoxide and hydrogen to give a hydrocarbon containing propane or butane as a main component, i.e., a liquefied petroleum gas, with high activity, high selectivity and high yield. Furthermore, the catalyst has a longer catalyst life with less deterioration.

1 . A catalyst for producing a liquefied petroleum gas, which is used for producing a liquefied petroleum gas containing propane or butane as a main component by reacting carbon monoxide and hydrogen, comprising
 a Pd-based methanol synthesis catalyst component and a β-zeolite catalyst component.   
   
   
       2 . The catalyst for producing a liquefied petroleum gas according to  claim 1 , wherein a ratio (by weight) of the Pd-based methanol synthesis catalyst component to the β-zeolite catalyst component expressed by the equation: (methanol synthesis catalyst component)/(zeolite catalyst component) is 0.1 to 3. 
   
   
       3 . The catalyst for producing a liquefied petroleum gas according to  claim 1 , wherein Pd is supported on a support. 
   
   
       4 . The catalyst for producing a liquefied petroleum gas according to  claim 3 , wherein the amount of supported Pd in the Pd-based methanol synthesis catalyst component is 0.1 to 10% by weight. 
   
   
       5 . The catalyst for producing a liquefied petroleum gas according to  claim 3 , wherein the support for the Pd-based methanol synthesis catalyst component is silica. 
   
   
       6 . The catalyst for producing a liquefied petroleum gas according to  claim 5 , wherein a specific surface area of the silica support for the Pd-based methanol synthesis catalyst component is 420 m 2 /g or more. 
   
   
       7 . The catalyst for producing a liquefied petroleum gas according to  claim 5 , wherein one or more types of basic metals, in addition to Pd, is supported on the silica. 
   
   
       8 . The catalyst for producing a liquefied petroleum gas according to  claim 7 , wherein the total amount of the basic metals supported in the Pd-based methanol synthesis catalyst component is 0 to 5% by weight. 
   
   
       9 . The catalyst for producing a liquefied petroleum gas according to  claim 1 , wherein the β-zeolite catalyst component is a proton-type β-zeolite with a SiO 2 /Al 2 O 3  molar ratio of 10 to 150.