Modelling of deactivation of Pd‐Au catalyst in vinyl acetate synthesis from oxidation of ethylene and acetic acid in the gaseous phase
Bibliographic record
Abstract
Abstract Vinyl acetate monomer (VAM) is produced from oxidation of ethylene and acetic acid on a Pd‐Au/SiO 2 catalyst in the gaseous phase. A progressive loss in activity occurs during the lifetime of a commercial Pd‐Au/SiO 2 VAM synthesis catalyst; thus, the efficiency of the reaction decreases and the process is no longer operational and economically feasible. In this study, the effective parameters on Pd‐Au/SiO 2 catalyst deactivation were investigated using a fixed‐bed reactor pilot, and a model was proposed to predict the reduction in catalyst activity. The proposed model's output was compared with experimental data and an acceptable agreement was observed. The error was < 10 %.
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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 | 0.001 |
| 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) | 0.000 | 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".