Propane reactions over faujasite structure zeolites type-X and USY: Effect of zeolite silica over alumina ratio, strength of acidity and kind of exchanged metal ion (EN)

Katranas, T. K. (EN)

Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας (EL)

Katranas, T. K. (EN)

In this work we prepared various zeolite-X and USY samples partially exchanged with copper, iron and platinum. These samples were characterized by XRD, Chemical Analysis, SEM-EDS, N-2-adsorption-desorption, ammonia-TPD, and tested as catalysts in high temperature (400 and 550 degrees C) propane transformation. The obtained results revealed the strong effect of Si/Al ratio in faujasite zeolite structure, the number and strength of acid sites and of the presence of different metal ions in countered ion sites, on the catalytic activity and selectivity of zeolite-X and USY. The highest propane dehydrogenation activity was achieved with the platinum-exchanged X zeolite (similar to 11.2% propylene yield, similar to 31% selectivity). On the contrary USY zeolites showed high cracking capability and relatively low dehydrogenation activity excepting the platinum-exchanged sample which yielded notably high aromatization products. (EN)

propane (EN)

Πανεπιστήμιο Ιωαννίνων

Ιδρυματικό Αποθετήριο Ολυμπιάς

Σχολή Θετικών Επιστημών

Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά)

ΑΠΟΘΕΤΗΡΙΟ "ΟΛΥΜΠΙΑΣ"

Τμήμα Χημείας

Catalysis Letters (EN)

Αγγλική γλώσσα

2007

http://olympias.lib.uoi.gr/jspui/handle/123456789/8957

<Go to ISI>://000249646200013

Springer Verlag (Germany) (EN)