Ethanol steam reforming for hydrogen production over bimetallic Pt-Ni/Al2O3
Catalysis Letters, cilt.120, sa.3-4, ss.198-203, 2008 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 120 Sayı: 3-4
- Basım Tarihi: 2008
- Doi Numarası: 10.1007/s10562-007-9269-4
- Dergi Adı: Catalysis Letters
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.198-203
- Anahtar Kelimeler: Bimetallic catalysts, Ethanol steam reforming, Hydrogen production, Pt-Ni
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Ethanol steam reforming was studied at 673-823 K over Pt-Ni/δ-Al 2O3. Results indicate that bimetallic catalyst is resistant to coke deposition at steam-to-carbon ratios as low as 1.5 and higher ratios are beneficial for both ethanol conversion and hydrogen formation. About 773 K is the optimum since high H2 production rates are accompanied by low CO and CH4 production rates. A power-function rate expression obtained on the basis of intrinsic rates at 673 K gives reaction orders of 1.25 (±0.05) and -0.215 (±0.015) for ethanol and steam, respectively; the apparent activation energy is calculated as 39.3 (±2) kJ mol -1 between 673 and 723 K. © 2007 Springer Science+Business Media, LLC.