DFT study of the reaction mechanism of N2O decomposition on Au3+/0/- clusters
Bibliographic record
Abstract
In this paper, the reaction mechanism of Au3+/0/- clusters with N2O was studied by density functional theory (DFT) calculations. The analysis of the potential energy surfaces showed that the Au3 neutral cluster exhibited highest catalyze activity on the decomposition of N2O, energy barrier is only 11.60 kcal/mol. The corresponding energy barriers for Au3- and Au3+ are 28.51 and 58.79 kcal/mol, respectively. The effects of Au3+/0/- clusters assistance analyzed using the activation strain model indicated that the dissociation of the N-O bond depends on the interaction energy of Au3 clusters and N2O. The electron transfer from the Au3+/0/- cluster to the N2O facilitates the dissociation of N-O bond. The analysis of frontier molecular orbitals (FMO) indicated that only the interaction of HOMO-LUMO interactions is strongly enough and there is sufficient orbital overlap between the Au3+/0/- clusters and N2O, electron transfer can occur and activation of N2O can be achieved. The study of thermodynamic processes showed that there is evident correlation between the binding energy of the Au3O+/0/- cluster oxides and the barrier energy of the reaction. Therefore, the orbital interactions between Au3+/0/- and N2O and thermodynamic driving force have a great influence on the reaction. These results enrich our understanding of the catalytic dissociation of N2O by Au-cluster-based catalysts.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".