Dehydration kinetics for coal‐based isobutanol on <i>γ</i>‐Al<sub>2</sub>O<sub>3</sub>
Bibliographic record
Abstract
Abstract Isobutanol dehydration using γ‐Al 2 O 3 catalysts to produce isobutene was carried out by a fixed bed reactor at 0.1 MPa. The effects of temperature, weight hourly space velocity, and particle size of catalyst on the conversion of isobutanol and selectivity of isobutene were investigated to find the optimum reaction conditions and get the kinetics information. The experimental results indicated that higher temperature could improve the conversion of isobutanol while a peak of selectivity of isobutene can be monitored with the temperature increasing. Meanwhile, increasing the flow rate leads to a decrease in the conversion of isobutanol, but showed little effect on selectivity of isobutene. The intrinsic kinetics model of isobutanol dehydration over γ‐Al 2 O 3 was developed according to the experimental results. The adsorption of isobutanol was considered as a rate‐determining step from the analysis results of reaction mechanism, and kinetics parameters were obtained by Levenberg‐Marquardt algorithm. The calculated results agreed well with the experimental data.
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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 | 0.001 |
| 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 | 0.001 | 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".