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- W2776553699 abstract "Abstract One of the most serious candidates for safe storage of high hydrogen densities is ammonia borane, AB. Likewise, one of the most versatile catalysts known is gold in the form of atomic clusters. Taking these elements into account, in this work a density functional theory ‐based study about initial activation, detachment, and diffusion of ammonia borane hydrogen on gold tetramer, as a catalyst model, is developed. It was found that the total process is exergonic and that the hydrogen diffusion occurs with very low energy barriers. The process has a hydrogen detachment energy barrier lower than the one of the uncatalyzed AB, and that is easily overcome by the energy expelled in the previous stage of formation of the initial activated species. Additionally, all the process is assisted by the fluxionality of the gold cluster, and occurs via a unique catalytically activated initial species, which contains a three‐center simultaneous interaction at the catalytically activated zone." @default.
- W2776553699 created "2018-01-05" @default.
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- W2776553699 date "2017-12-20" @default.
- W2776553699 modified "2023-10-16" @default.
- W2776553699 title "Activation and diffusion of ammonia borane hydrogen on gold tetramers" @default.
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- W2776553699 doi "https://doi.org/10.1002/qua.25567" @default.
- W2776553699 hasPublicationYear "2017" @default.
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