| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5363813 | Applied Surface Science | 2013 | 5 Pages |
Abstract
⺠We studied the reaction between NiO and Al2O3 in NiO/γ-Al2O3 catalysts using positronium atom as a new probe. ⺠After annealing the catalyst above 600 °C, reaction between NiO and Al2O3 occurs, which leads to the formation of NiAl2O4. ⺠The NiAl2O4 resultant weakens the spin-conversion effect of positronium, which results in the abnormal increase of ortho-positronium lifetime. ⺠Our results show that the positronium can be used as a sensitive probe for the detection of chemical reaction occurred in catalysts.
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Authors
C.Y. Li, H.J. Zhang, Z.Q. Chen,