Author :
Dabbagh, Hossein A.,Huang, Chen-Shi,Sparks, Dennis E
Title of Article :
Carbon-14 tracer study of the conversion of labeled n-propylcopentane during n-octane aromatization with a pt-zeolite L catalyst
Title Of Periodical :
JOURNAL OF CATALYSIS
Descriptors :
Carbon-14 tracer study,Reforming,Zeolite catalysis
Abstract :
n-propylene cyclopentane or n-propylcyclopentane labeled in the ring wich 14C was converted together with n-octane using a Pt-KL zeolite catalyst operating at 482 C and ca.14 bar.The products indicate that hydrogenolysis to produce isooctanes,not ring expanion to produce aromatics,is the major reaction pathway for the alkyl cyclopentane compound. Dilution of the 14C activity in n-propylcylopentane during the conversion shows that C5 as well as C6 cyclization occurs durintg the conversion of n-octane. The current data were obtained with a catalyst that has a Pt crystal size range that is similar to those reported earlier. Furthermore,the conversion data for n-octane and n-propylcyclopentane using the Pt-KL zeolite catalyst are very similar to data obtained with catalysts based on other nonacidic supports where the Pt crystals cannot be located in a zeolite type channel. Thus, for n-octane conversion,it appears that the Pt in L zeolite catalysts has selectivities that are similar to Pt on other nonacidic supports.
