Aromatization of propane has been studied on Pt-Tl/ZSM-5 catalysts in the temperature range 350-550-degrees-C. The effect of thallium precursor and TI/Pt ratio has been also investigated. The best results have been obtained on the bimetallic samples prepared from Tl2SO4 and H2PtCl6. On these samples addition of thallium to Pt/ZSM-5 increases the selectivity to aromatics without significantly affecting the catalytic activity. A maximum aromatic yield of about 70% has been obtained on the sample with a Tl/Pt ratio of 1. It is suggested that thallium dilutes the platinum active sites thus reducing their cracking activity.
|Titolo:||PROPANE AROMATIZATION OVER PT-TL/ZSM-5|
|Data di pubblicazione:||1993|
|Appare nelle tipologie:||1.1 Articolo in rivista|