Kinetics of reverse water‐gas shift reaction over Pt/Al<sub>2</sub>O<sub>3</sub> catalyst
Bibliographic record
Abstract
Abstract The CAMERE (Carbon Dioxide Hydrogenation to Form Methanol via a Reverse Water‐Gas Shift Reaction) process for the transformation of CO2 into methanol comprises reverse water‐gas shift (RWGS) and methanol production. In this work, the reaction kinetics of RWGS was investigated using a commercial Pt/Al2O3 catalyst. Catalytic runs were accomplished in a fixed‐bed flow reactor at 0.1 MPa in the 573–873 K range. The space time was varied in the 0.03–0.25 g · h/L range. The prevalence of the chemical control regime was established. The influence of reaction variables on the catalyst performance was investigated, and it was found that the increase in pressure resulted in a growing CO2 conversion value. The reactor was operated under differential reaction conditions and the influence of the H2/CO2 ratio in the feed on reaction rates was studied. Finally, the reaction pathway was analyzed using the associative and redox reaction mechanisms, and the latter appeared dominant over Pt/Al2O3.
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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 | 0.000 | 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 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".