![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
ABSTRACT
In this study, reaction characteristics of C2H4/O2 and C3H6/O2 on practical Pt/Al2O3 monolith catalyst are investigated, and a simplified microkinetic surface reaction mechanism is proposed by taking the observed surface species and their occupied active surface sites into account. Importance of more than one active PGM surface site occupations at the adsorption step of C2H4 or C3H6 and multiple-sited stable intermediate CHx species are considered. Gas phase experimental results show that the light-off temperature as well as complete conversion temperature of both C2H4/O2 and C3H6/O2 mixture shift to lower side with the increase in oxygen concentration. The surface species analyses show the presence of stable intermediate CHx species and linearly adsorbed CO on the platinum surface. Numerically simulated light-off performance with the proposed reaction mechanism shows good agreement with the experimental results of C2H4/O2 and C3H6/O2. Moreover, simulation results also agree well with the additional experimental results with multiple gas compositions and validate the proposed detailed reaction mechanism.
Supplementary material
Supplemental data for this article can be accessed on the publisher’s website.
Correction Statement
This article has been republished with minor changes. These changes do not impact the academic content of the article.
