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- W2083252009 abstract "Radiolysis of γ-alumina produces electrons, e-, and positive holes, h+. These species rapidly migrate to the surface to produce products of surface adsorbed compounds. The electrons are also trapped by surface OH groups giving rise to short-lived (<10 μs) trapped electrons, . Heating the γ-Al2O3 produces Lewis acid sites and decreases the OH content of the surface. Such material produces much lower yields of trapped electrons, as e- then reacts predominantly with the Lewis acid sites. Hydrogen gas is produced on radiolysis of γ-Al2O3 via H atom formation from e-. The H atoms may recombine, producing H2, or react with surface adsorbed materials (e.g., pyrene) to produce H atom adducts. The basic radiation chemistry is similar to that observed in zeolites (but not SiO2), where ionization predominates. These studies illustrate for the first time the production of electrons in a γ-Al2O3 surface and the consequent two-dimensional kinetics of these species on the surface." @default.
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- W2083252009 date "2003-10-01" @default.
- W2083252009 modified "2023-09-25" @default.
- W2083252009 title "Reactions of Electrons on the Surface of γ-Al<sub>2</sub>O<sub>3</sub>. A Pulse Radiolytic Study with 0.4 MeV Electrons" @default.
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- W2083252009 doi "https://doi.org/10.1021/jp030348r" @default.
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