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- W2022087874 abstract "Abstract The catalytic decomposition of N2O has been studied on spinel catalysts of com position NixMg1 − xAl2O4, with x = 0; 0.002; 0.01; 0.03; 0.06; 0.10; 0.25; 0.50; 1. In the bulk of these solid solutions, nickel ions are predominantly distributed on octahedral sites, with a fraction of Ni2+ on tetrahedral sites. It is shown that the catalytic activity of surface Ni2+ ions which are exposed from octahedral sites is larger than the activity of surface Ni2+ ions exposed from tetrahedral sites. The catalytic activity is accordingly influenced by the extent of inversion. The results also point to a distribution of nickel ions in the surface layers different from that found in the bulk, the external layers being richer in tetrahedral nickel. Adsorption measurements have shown that oxygen chemisorption is strong, and amounts to 2–5% of monolayer coverage: this is larger than on NixMg1 − xO. The results are discussed in terms of possible environment effects on the oxygen surface complex." @default.
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- W2022087874 date "1971-02-01" @default.
- W2022087874 modified "2023-09-25" @default.
- W2022087874 title "Catalytic activity of nickel ions in a spinel matrix for N2O decomposition" @default.
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- W2022087874 doi "https://doi.org/10.1016/0021-9517(71)90081-9" @default.
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