Interaction between Nickel and Molybdenum in Ni-Mo/Al2O3 catalysts: II CO hydrogenation
Applied Catalysis A: General, cilt.168, sa.2, ss.399-407, 1998 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 168 Sayı: 2
- Basım Tarihi: 1998
- Doi Numarası: 10.1016/s0926-860x(97)00370-0
- Dergi Adı: Applied Catalysis A: General
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.399-407
- Anahtar Kelimeler: CO adsorption, CO hydrogenation, Nickel-alumina, Nickel-molybdenum alumina
- Boğaziçi Üniversitesi Adresli: Evet
Özet
A series of alumina supported Ni, Mo and Ni-Mo catalysts prepared by impregnation or coimpregnation were tested to investigate the effects of Ni-Mo interaction on their structural properties and activity/selectivity characteristics in CO hydrogenation. The Ni and Mo contents of the catalysts were varied between 0-15 wt% according to a factorial experimental design. The results of CO hydrogenation tests reveal that the specific activity of the active sites changes with Mo loading, Ni:Mo molar ratio and total metal loading. Introducing Mo as the second metal increases the total hydrocarbon production as well as the C2-C4 hydrocarbons selectivity in the 498-573 K temperature range. Lower H2/CO molar ratios increase C2-C4 selectivity, and this effect is enhanced with Mo addition especially to samples with higher Ni loading. © 1998 Elsevier Science B.V.