Designing graded catalytic domain to homogenize temperature distribution while dry reforming of CH4. (6th September 2018)

• Record Type: Journal Article
• Authors: Aydın, Özgür; Kubota, Atsushi; Tran, Dang Long; Sakamoto, Mio; Shiratori, Yusuke
• Is Part Of: International journal of hydrogen energy. Volume 43:Number 36(2018)
• Page Start: 17431
• Page End: 17443
• Publication Date: 2018-09-06
• Subjects: Graded catalytic domain -- Temperature distribution -- Dry reforming -- Paper-structured catalyst -- Modeling -- Reformer; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.07.084
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: While utilizing biogas in Solid Oxide Fuel Cell (SOFC) systems equipped with either internal or external catalytic domain possessing a uniform catalytic activity, the rate of the reforming reaction significantly changes along the flow field due to the rapid conversion of the methane in the inlet region. Thus, a dramatic temperature variation develops along the flow field, resulting in thermal stress on the adjacent components. To mitigate the temperature variation, design of a catalytic domain graded in terms of the catalyst loading along the flow field is a promising solution, for which herein we present a strategy based on numerical modeling and in situ temperature measurement along the reformer. We design a graded catalytic domain for a uniform temperature distribution and demonstrate it experimentally, aiming the efficient use of biogas in SOFC systems. Highlights: Design strategy for grading catalytic domain for dry CH4 reforming in a reformer. Uniform temperature profile during dry CH4 reforming by graded catalytic domain. Longitudinally controlled dry CH4 reforming rate for a uniform temperature profile. Spatially measured interior/surface temperature of reformer while dry reforming of CH4 .