Water-gas shift activity of ceria supported Au-Re catalysts
Catalysis Communications, cilt.12, sa.13, ss.1206-1211, 2011 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 12 Sayı: 13
- Basım Tarihi: 2011
- Doi Numarası: 10.1016/j.catcom.2011.04.016
- Dergi Adı: Catalysis Communications
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.1206-1211
- Anahtar Kelimeler: Au-Re, Bimetallic gold catalysts, Fuel processing, Water-gas shift
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Au-Re/ceria, Au/ceria and Re/ceria catalysts were prepared using deposition precipitation and impregnation techniques for Au and Re addition, respectively, except the sample prepared by sequential impregnation. Catalysts were characterized by HRTEM-EDS, SEM-EDS, XPS and XRD. WGS activity tests on the samples were performed in the temperature range 200-450 °C. The effects of Re incorporation, metal addition sequence, space velocity and H2O/CO ratio on the catalytic performance were investigated. The novel Au-Re/ceria catalysts showed high activity in WGS reaction, especially at high H 2O/CO ratios, led by the presence of catalytically active and steam tolerant sites formed on the bimetallic catalysts. © 2011 Elsevier B.V.