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- W2006363259 abstract "Monolayer channeling of Ni particles (less than 2000 Å diameter) on the basal plane of graphite was studied for the catalyzed CH2 reaction (producing methane). The preferred wetting of Ni on the {101l} zigzag edge of graphite determines the channel orientation and is also the driving force for channeling. The reaction follows these sequential steps: dissolution of carbon at monolayer step/Ni interface, diffusion of carbon in Ni, reaction of carbon with chemisorbed hydrogen at the Ni/gas interface. The last step (the surface reaction) is the rate-limiting step. The close similarity between the turnover rates of the surface reaction for monolayer channeling, deep-layer channeling, bulk reaction (using mixed NiC), and methanation (from CO + H2) suggests that the surface reaction is the common rate-limiting step. Moreover, Ni is approximately two orders of magnitude more active than Pt for all modes of action except for methanation, where CH4 is not the only product from Pt." @default.
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- W2006363259 date "1987-12-01" @default.
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- W2006363259 title "Mechanism of graphite hydrogenation catalyzed by nickel" @default.
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- W2006363259 doi "https://doi.org/10.1016/0021-9517(87)90184-9" @default.
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