US2012071317A1PendingUtilityA1

TOLUENE DISPROPORTIONATION USING Nb/MORDENITE CATALYST

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Individually held — no corporate assignee on recordPriority: Aug 18, 2008Filed: Oct 13, 2011Published: Mar 22, 2012
Est. expiryAug 18, 2028(~2.1 yrs left)· nominal 20-yr term from priority
Inventors:James R. ButlerRosa HallXin Xiao
B01J 29/26C07C 2529/26Y02P20/52C07C 6/123B01J 29/076
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Claims

Abstract

A molecular sieve catalyst useful in the conversion of hydrocarbons containing niobium is disclosed, along with a process for the disproportionation of toluene to benzene and xylene using such catalyst.

Claims

exact text as granted — not AI-modified
1 . A catalyst useful in the conversion of hydrocarbons comprising: a molecular sieve catalyst containing niobium. 
     
     
         2 . The catalyst of  claim 1 , wherein the molecular sieve catalyst is a zeolite. 
     
     
         3 . The catalyst of  claim 1 , wherein the molecular sieve catalyst is a mordenite zeolite. 
     
     
         4 . The catalyst of  claim 1 , wherein the catalyst is used in a toluene disproportionation reaction process. 
     
     
         5 . The catalyst of  claim 4 , wherein the toluene disproportionation reaction process provides a toluene conversion at a rate of at least 30 wt % and non-aromatic selectivity of less than 1.0 wt %. 
     
     
         6 . The catalyst of  claim 4 , wherein the toluene disproportionation reaction process provides a toluene conversion at a rate of at least 40 wt % and non-aromatic selectivity of less than 0.5 wt %. 
     
     
         7 . The catalyst of  claim 4 , wherein the toluene disproportionation reaction process can continue with a toluene conversion of at least 30 percent for at least 30 days with an average catalyst deactivation no more than 1.0° C./day. 
     
     
         8 . The catalyst of  claim 4 , wherein the toluene disproportionation reaction process can continue with a toluene conversion of at least 40 percent for at least 30 days with an average catalyst deactivation no more than 0.5° C./day. 
     
     
         9 . The catalyst of  claim 1 , wherein the molecular sieve catalyst contains at least 0.005 wt % niobium. 
     
     
         10 . The catalyst of  claim 1 , wherein the toluene disproportionation reaction process provides a toluene conversion at a rate of at least 30 wt % and the methylcyclopentane content is less than 0.005 wt % of the liquid effluent.

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