Modelling of the ethanol steam reforming over Rh-Pd/CeO2 catalytic wall reactors. (2nd October 2020)

• Record Type: Journal Article
• Authors: Cifuentes, Alejandro; Torres, Ricardo; Llorca, Jordi
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 49(2020)
• Page Start: 26265
• Page End: 26273
• Publication Date: 2020-10-02
• Subjects: Hydrogen -- CFD model -- Ethanol steam reforming -- Catalytic wall reactor -- Ceria-based catalyst -- Structured catalyst; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2019.11.034
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Existing literature data have been used to model the steam reforming of ethanol on catalytic honeycombs coated with Rh-Pd/CeO2, which have shown an excellent performance and robustness for the production of hydrogen under realistic conditions. In this article, a fully 3D non-isothermal model is presented, where the reactions of ethanol decomposition, water gas shift, and methane steam reforming have been modelled under different operational pressures (1–10 bar) and temperatures (500–1200 K) at a steam to carbon ratio of S/C = 3 and a space time of W/F between 2·10 −3 and 3 kg h Lliq −1 . According to the modelling results, a maximum hydrogen yield of 80% is achieved at a working temperature of 1150 K and a pressure of 4 bar at S/C = 3. Highlights: Ethanol steam reforming has been modelled with a 3D non-isothermal model. EtOH decomposition, water gas shift and CH4 steam reforming have been considered. Honeycombs loaded with Rh-Pd/CeO2 catalyst have been modelled at S/C = 3. A maximum H2 yield of 80% is achieved at 1150 K and 4 bar.