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Methanation of carbon dioxide on Ni/(Zr-Sm)Ox catalysts


, : Methanation of carbon dioxide on Ni/(Zr-Sm)Ox catalysts. Applied Organometallic Chemistry 14(12): 803-808

Ni/ZrO2 and Ni/(Zr0.9Sm0.1)0.95 catalysts were prepared by wet impregnation, and their catalytic activities for methanation of carbon dioxide were compared with the highly active catalysts prepared from amorphous nickel-zirconium-samarium alloys. The Ni(Zr0.9Sm0.1)O1.95 catalyst showed higher activity for methanation of carbon dioxide than the samarium-free Ni/ZrO2 catalyst with the same nickel content. The higher activity of the samarium-containing catalyst is associated with the formation of the (Zr-Sm)Ox oxide with a tetragonal ZrO2 structure, similar to the Ni/(Zr-Sm)Ox catalysts prepared from the amorphous nickel-zirconium-samarium alloys. An increase in the nickel content from 30 to 60 mol% in cationic percentage results in a decrease in the activity, mainly because of a decrease in the surface area of the catalysts, although the activity of the catalysts prepared from amorphous nickel-zirconium-samarium alloys increases with the nickel content. Further, it was found that the activities of the Ni/(Zr-Sm)Ox catalysts prepared from the amorphous nickel-zirconium-samarium alloys are higher than those prepared by wet impregnation. Uniform dispersion of nickel in the catalysts prepared from amorphous single-phase alloys should be one of the reasons for the extremely high activity of the catalysts.

US$19.90

DOI: 10.1002/1099-0739(200012)14:12<803::aid-aoc89>3.0.co;2-j


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Iapichino, G.; Pesenti, A.; Radrizzani, D.; Solca, M.; Pelizzola, A.; Gattinoni, L., 1983: Nutritional support to long-term anesthetized and curarized patients under extracorporeal respiratory assist for terminal pulmonary failure. Low-frequency positive pressure ventilation with extracorporeal carbon dioxide removal, a new form of respiratory assistance, was applied to 12 patients with terminal respiratory failure, for a cumulative time of 1706 h, range 27 to 309. Survival...

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Camillo, P.J.; O.N.ill, P.E.; Gurney, R.J., 1986: Estimating soil hydraulic parameters using passive microwave data. Useful quantitative information about soil properties may be obtained by calibrating energy and moisture balance models with remotely sensed data. In this study, a soil physics model solves heat and moisture flux equations in the soil profile and...

Kaneko Yasunari; Miyano Takashi; van Reenen Dirk D., 1990: Intrusion plane of the Bushveld Complex inferred from the contact metamorphosed Pretoria Group, northeastern Transvaal, South Africa. Science Reports of the Institute of Geoscience, University of Tsukuba, Section B: Geological Sciences 11: 11-22

Bleahu, M.; Bradescu, V.; Marinescu, F., 1976: Romania's natural geological reserves. The book aims to inform both specialists and public of the value of Romanias' geological and palaeontological reserves and to reveal some of the causes of their degradation. About 80 protected areas are described. Besides the informational ma...

Hall, K.V., 1962: The great saphenous vein used in situ as an arterial shunt after extirpation of the vein valves. A preliminary report. Surgery 51: 492-495

Huang, A.J.W.; Li, C.H.; Lau, H.; Pena, J., 1996: Expression of bcl-2 in human ocular surface epithelia. Investigative Ophthalmology & Visual Science 37(3): S452