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- W1996688997 abstract "The effect of the preparation method on the catalytic properties and performance of 5 wt.% Ni on calcium aluminate (molar CaO/Al2O3=1/2) in the reaction of CO2 reforming of CH4 was investigated. The techniques employed for the preparation were the incipient wetness and total blending. The catalyst sample prepared by the deposition of Ni on already formed calcium aluminate proved to be more active with lower coke deposition for the reaction of reforming than the samples prepared by the total blending technique where the nickel compound was premixed with Ca and Al compounds. The differences in activity were attributed to different amounts of active NiO on the surface of the prepared samples as it was proved from XPS spectra and H2-TPD profiles. Specific desorption peaks, which appeared in TPD profiles of catalysts prepared by total blending technique and calcined at 700°C and 900°C, were associated with hydrogen spillover to the support. Furthermore, long term testing of the catalyst prepared by the incipient wetness technique showed no loss of activity with low coke deposition. TPO experiments conducted using 13CH4/CO2/He mixture demonstrated that the adsorbed carbon species are formed via the CH4 and CO2 molecular routes." @default.
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- W1996688997 date "1998-11-01" @default.
- W1996688997 modified "2023-10-11" @default.
- W1996688997 title "Carbon dioxide reforming of methane over 5wt.% nickel calcium aluminate catalysts – effect of preparation method" @default.
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- W1996688997 doi "https://doi.org/10.1016/s0920-5861(98)00339-3" @default.
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