Recent Progress in the Study of Intracrystalline Diffusion in Zeolites by Chromatographic and ZLC Techniques
Bibliographic record
Abstract
Recent progress in the development and application of chromatographic and ZLC methods to the measurement of intracrystalline diffusion in zeolites is reviewed. For hydrocarbons in silicalite the results show the expected pattern of variation of diffusivity with the size and shape of the sorbate molecule but for the unsaturated hydrocarbons, an unexpected variation of diffusivity with loading, at very low concentrations, is observed. The variation of diffusivity with chain length for the n-alkanes in offretite-erionite has also been investigated in detail and there appears to be no evidence to support the widely quoted “window effect” for this system. Comparisons between macroscopic and microscopic diffusivity measurements are presented and although there is good agreement for many systems, some troubling discrepancies remain.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.002 |
| 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".