Conversion of Dinitrogen and Oxygen to Nitric Oxide Mediated by Triatomic Yttrium Cations: Reversible N–N Bond Switching
Bibliographic record
Abstract
The direct coupling of dinitrogen (N 2 ) and oxygen (O 2 ) to produce value-added chemicals such as nitric acid (HNO 3 ) at room temperature is fascinating but quite challenging because of the inertness of N 2 molecules. Herein, an interesting reaction pathway is proposed for a direct conversion of N 2 and O 2 mediated by all-metal Y 3 + cations. This reaction pattern begins with the N≡N triple bond cleavage by Y 3 + to generate a dinitride cation Y 2 N 2 +, and the electrons that lead to N 2 activation in this process mainly originate from Y atoms. In the following consecutive reactions with two O 2 molecules, the electrons stored in the N atoms are gradually released to reduce O 2 through re-formation and re-fracture of the N–N bonds, with concomitant release of two NO molecules. Therefore, the reversible N–N bond switching acts as an efficient electron reservoir to drive the oxidation of the reduced N atoms, leading to the formation of NO molecules. This method of producing NO by direct coupling N 2 and O 2 molecules, which is the reversible N–N bond switching, may provide a new strategy for the direct synthesis of HNO 3, etc.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".