Solubility of carbon dioxide in alkylcarbonates and lactones
Bibliographic record
Abstract
The solubility of carbon dioxide in γ-butyrolactone (BL), caprolactone (CL), propylene carbonate (PC), ethylene carbonate (EC), dimethylcarbonate (DMC), diethylcarbonate (DEC), and mixtures of these components has been determined at temperatures from 275 to 333 K at atmospheric pressure. The Henry's law constant (k H ) for the dissolution of CO 2 in these solvents has been deduced from the solubility data. The value of k H increases in the following order: DEC < DMC < PC < CL < BL < EC, which is identical to the order of the Hildebrand parameters (δ) of the corresponding solvents. The accuracy of classical theories for predicting gas solubilities in liquids has been examined. The best results are given by the VilcuPerisamu equation, which is derived from the ScatchardHildebrand theory but takes into account the polarizability of the solute and the permittivity of the solvent. A modified form of the Prausnitz and Shair equation is proposed to estimate the solubility of nonpolar molecules in strongly dipolar solvents. This equation fits the experimental data with improved precision.Key words: alkylcarbonate, lactone, carbon dioxide, liquidgas equilibrium, Henry's law, Hildebrand parameter.
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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 | 0.000 |
| 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) | 0.000 | 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".