Alumina supported Au/Y-doped ceria catalysts for pure hydrogen production via PROX. (1st January 2019)

• Record Type: Journal Article
• Authors: Ilieva, L.; Petrova, P.; Pantaleo, G.; Zanella, R.; Sobczak, J.W.; Lisowski, W.; Kaszkur, Z.; Munteanu, G.; Yordanova, I.; Liotta, L.F.; Venezia, A.M.; Tabakova, T.
• Is Part Of: International journal of hydrogen energy. Volume 44:Number 1(2019)
• Page Start: 233
• Page End: 245
• Publication Date: 2019-01-01
• Subjects: Gold catalysts -- Y-doped ceria on alumina -- PROX; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2018.03.005
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Gold catalysts on Y-doped ceria dispersed on high surface area γ-Al2 O3 were synthesized and tested in preferential CO oxidation in hydrogen rich stream (PROX). The effect of ceria loading (10, 20 or 30 wt%) was studied. The gold catalyst with the lowest ceria amount exhibited the highest PROX activity. The addition of Y2 O3 (1 wt%) led to improved performance. The most favorable effect was observed in the sample with 20 wt% ceria amount. This gold catalyst showed good PROX activity and stability in the presence of CO2 and water. Catalysts characterization by XRD, HRTEM/HAADF, XPS and H2 -TPR was used to elucidate the relationship between the chemical composition, state of gold, support features and catalytic properties. Graphical abstract: Highlights: PROX over alumina supported Au/Y-doped ceria catalysts. Effect of ceria loading (10, 20 or 30 wt%) and Y-addition. Promising PROX activity and stability in the presence of CO2 and water. Relationship between gold and support features and catalytic properties.