Effect of noble metal addition over active Ru/TiO2 catalyst for CO selective methanation from H2 rich- streams

卷:48

Article

关键词: FUEL-CELL SYSTEMS;    CARBON-MONOXIDE;    H-2 CHEMISORPTION;    RU CATALYSTS;    SURFACE;    GAS;    HYDROGENATION;    REMOVAL;    BEHAVIOR;   

DOI  :  10.1016/j.ijhydene.2022.07.072

来源: SCIE

【 摘 要 】

Selective CO methanation from H2-rich stream has been regarded as a promising route for deep removal of low CO concentration and catalytic hydrogen purification processes. This work is focused on the development of more efficient catalysts applied in practical conditions. For this purpose, we prepared a series of catalysts based on Ru supported over titania and promoted with small amounts of Rh and Pt. Characterization details revealed that Rh and Pt modify the electronic properties of Ru. The results of catalytic activity showed that Pt has a negative effect since it promotes the reverse water gas shift reaction decreasing the selectivity of methanation but Rh increases remarkably the activity and selectivity of CO methanation. The obtained results suggest that RuRh-based catalyst could become important for the treatment of industrial-volume streams. & COPY; 2022 The Author(s). Published by Elsevier Ltd on behalf of Hydrogen Energy Publications creativecommons.org/licenses/by-nc-nd/4.0/).

【 授权许可】

Free