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Naphthalene Steam Reforming over Ni / Ce 0 . 75 Zr 0 . 25-xMnxO 2 ( x = 0 , 0 . 10 , 0 . 20 and 0 . 25 ) Mixed Oxide Catalysts
| Content Provider | Semantic Scholar |
|---|---|
| Author | Meeyoo, Vissanu Bampenrat, Asawin Kitiyanan, Boonyarach Rangsunvigit, Pramoch Rirksomboon, Thirasak |
| Copyright Year | 2008 |
| Abstract | In this study, the catalytic activity of Ni supported on Ce0.75Zr0.25-xMnxO2 (x = 0, 0.10, 0.20 and 0.25) catalysts prepared by urea hydrolysis and incipient wetness impregnation is investigated via steam reforming reaction of naphthalene as a model biomass tar compound. Experiments were carried out in a fixed bed reactor at 700 C and atmospheric pressure using a molar ratio of steam/carbon (S/C) equal to 2. The catalysts also were characterized by various techniques, such as surface area, temperature-programmed reduction (TPR), X-ray diffraction (XRD) and temperature-programmed oxidation (TPO). In comparison with Ni/αAl2O3, the catalytic performance data showed that nickel supported on mixed oxide catalysts exhibit high activities and stabilities for the steam reforming of naphthalene and high resistance toward carbon deposition. Moreover, the promotion effect of manganese doping markedly suppressed carbon deposited on the Ni/Ce0.75Zr0.25-xMnxO2 catalysts. It can be suggested that the incorporation of manganese ions into ceria lattice improved the oxygen storage capacity as well as the oxygen mobility on the surface of mixed oxides, facilitating gasification of surface carbon. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://folk.ntnu.no/skoge/prost/proceedings/aiche-2008/data/papers/P132158.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
