Catalyst for production of monocyclic aromatic hydrocarbons and method of producing monocyclic aromatic hydrocarbons

Abstract

A catalyst is provided for production of monocyclic aromatic hydrocarbons having a carbon number of 6 to 8 from feedstock in which a 10 vol % distillation temperature is 140° C. or higher and a 90 vol % distillation temperature is 380° C. or lower. The catalyst contains crystalline aluminosilicate including large-pore zeolite having a 12-membered ring structure, and intermediate-pore zeolite having a 10-membered ring structure.

1 . A catalyst for production of monocyclic aromatic hydrocarbons having a carbon number of 6 to 8 from feedstock in which a 10 vol % distillation temperature is 140° C. or higher and a 90 vol % distillation temperature is 380° C. or lower, the catalyst comprising:
 crystalline aluminosilicate including large-pore zeolite having a 12-membered ring structure, and intermediate-pore zeolite having a 10-membered ring structure. 
 
     
     
         2 . The catalyst for production of monocyclic aromatic hydrocarbons according to  claim 1 ,
 wherein in the crystalline aluminosilicate, a mass ratio of the large-pore zeolite to the intermediate-pore zeolite (large-pore zeolite/intermediate-pore zeolite) is 2/98 to 50/50.   
     
     
         3 . The catalyst for production of monocyclic aromatic hydrocarbons according to  claim 1 ,
 wherein the large-pore zeolite is a zeolite of any type selected from a BEA type, an FAU type, and an MOR type.   
     
     
         4 . The catalyst for production of monocyclic aromatic hydrocarbons according to  claim 1 ,
 wherein the large-pore zeolite is BEA-type zeolite.   
     
     
         5 . The catalyst for production of monocyclic aromatic hydrocarbons according to  claim 1 ,
 wherein the intermediate-pore zeolite is MFI-type zeolite.   
     
     
         6 . The catalyst for production of monocyclic aromatic hydrocarbons according to  claim 1 , further comprising:
 phosphorus.   
     
     
         7 . A method of producing monocyclic aromatic hydrocarbons having a carbon number of 6 to 8, the method comprising:
 bringing feedstock in which a 10 vol % distillation temperature is 140° C. or higher and a 90 vol % distillation temperature is 380° C. or lower into contact with the catalyst for production of monocyclic aromatic hydrocarbons according to  claim 1 .   
     
     
         8 . The method of producing monocyclic aromatic hydrocarbons having a carbon number of 6 to 8 according to  claim 7 ,
 wherein as the feedstock, light cycle oil produced by a fluidized catalytic cracking unit is used.   
     
     
         9 . The method of producing monocyclic aromatic hydrocarbons having a carbon number of 6 to 8 according to  claim 7 ,
 wherein the feedstock is brought into contact with the catalyst for production of monocyclic aromatic hydrocarbons in a fluidized bed reaction unit.