Ignition characteristics of Pt, Ni and Pt-Ni catalysts used for autothermal fuel processing
Catalysis Letters, cilt.88, sa.1-2, ss.17-22, 2003 (Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 88 Sayı: 1-2
- Basım Tarihi: 2003
- Doi Numarası: 10.1023/a:1023574530390
- Dergi Adı: Catalysis Letters
- Derginin Tarandığı İndeksler: Scopus
- Sayfa Sayıları: ss.17-22
- Anahtar Kelimeler: n-butane, Nickel, Oxidation, Platinum, Propane
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Oxidation of propane and n-butane over supported Pt, Ni and Pt-Ni catalysts was studied under fuel-rich conditions. Light-off temperatures followed the order of propane > n-butane and of Ni > Pt-Ni > Pt and were found to have minimum values at optimal fuel: oxygen ratios over Pt-Ni. The bimetallic Pt-Ni catalyst is likely to involve (i) synergistic interactions between the two metals and (ii) pronounced effect of Pt metal during surface ignition. Differences in oxidation activities of Pt and Pt-Ni catalysts seem to be related to the degree of dispersion of Pt metal. For both hydrocarbons, coke formation was not observed under the conditions employed.