Temperature Dependence of CO Chemisorption and Its Oxidative Desorption on the Pt(111) Electrode
Bibliographic record
Abstract
The influence of temperature variation on the CO chem oxidative desorption on Pt(111) electrodes is examined. A distinct shift of the CO chem stripping peak towards less-positive potentials is observed as the temperature is increased from 273 to 333 K. Despite the displacement of the desorption peak towards lower potentials, its current density and shape remain unaffected (for T ≤ 318 K), therefore indicating that the oxidation mechanism for the CO chem is not influenced by the temperature variation in this particular range. On the other hand, the coverage of the CO chem overlayer is clearly influenced by the temperature change. At T ≤ 318 K, the CO chem coverage is 0.68 while at T > 318 K there is a sharp decrease in the CO chem coverage to 0.54. The linear dependence of the peak potential with the temperature allows us to determine the apparent activation energy of the process which is found to be 132 ± 3 kJ mol - 1 . This value agrees well with the literature value that proposes that process proceeds with formation of (Pt−CO···OH−Pt) ⧧ as the activated complex.
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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 | 0.000 | 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 | 0.000 | 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 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".