The effect of support morphology on the reaction of oxidative dehydrogenation of ethane to ethylene at short contact times |
| |
Authors: | Francesco Donsì Stefano Cimino Almerinda Di Benedetto Raffaele Pirone and Gennaro Russo |
| |
Affiliation: | aDepartment of Chemical Engineering, Università degli Studi di Napoli Federico II – P.le Tecchio 80, 80125 Napoli, Italy bIstituto di Ricerche sulla Combustione, CNR, Italy |
| |
Abstract: | The oxidative dehydrogenation of ethane is carried out in short contact time reactors over Pt and LaMnO3 based catalysts supported on a large number of different ceramic substrates (45, 60 and 80 ppi foam monoliths and 200, 400, 600, 900 and 1200 cpsi honeycomb monoliths). Experimental results, obtained under the same conditions at varying the C2H6/O2 ratio, showed that the highest performance in terms of ethylene selectivity and yield is always attained on LaMnO3 catalysts. Furthermore, the results are significantly influenced by the morphology and cell density of the support, with 45 and 60 ppi foams and 400 and 600 cpsi honeycombs giving the best performance. The experimental results are explained by means of geometrical and fluid dynamic considerations on the support, and by means of a 2D mathematical model, which clearly indicates an optimal intermediate cell density for maximising ethylene selectivity and yield. |
| |
Keywords: | Structured catalysts Oxidative dehydrogenation Pt Perovskite Support morphology Ethylene |
本文献已被 ScienceDirect 等数据库收录! |
|