Method for studying high temperature aqueous electrochemical systems: Methanol and glycerol oxidation
Bibliographic record
Abstract
A method for high purity aqueous electrochemical experiments at temperatures above the normal boiling point of water and at temperatures up to 140 °C is described. A three-electrode cell in a self-pressurized glass autoclave is heated in an oil bath. Slow ramping of the temperature allows efficient acquisition of kinetic parameters such as activation energies, oxidation onset potentials and Tafel slopes by using cyclic voltammetry. The oxidation of two organic alcohols with different volatilities, methanol (high volatility) and glycerol (low volatility), are studied to demonstrate the capabilities of the method. Methanol oxidation on platinum is found to have a similar mechanism at all temperatures, with either dissociative adsorption of water or dissociative adsorption of methanol as the rate-determining step. In the case of glycerol oxidation on platinum, the mechanism changes at 110 °C. At low temperatures dissociative adsorption of water or dissociative adsorption of glycerol is suggested to be the rate-determining step. At higher temperatures, a significant decrease in onset potential was observed and the glycerol is suggested to selectively oxidize to glyceraldehyde or dihydroxyacetone, with dissociative glycerol adsorption as the rate-determining step.
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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 | 0.000 | 0.000 |
| 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".