Protic ionic liquid—2,2,2‐trifluoroacetic acid—methyl trifluoroacetate mixture distillation process
Bibliographic record
Abstract
Abstract The work provides experimental data of the methyl trifluoroacetate (MeTFA)— 2 , 2 , 2 ‐trifluoroacetic acid (TFA) mixture distillation process in the presence of N ‐Methyl‐ 2 ‐pyrrolidone (NMP) at atmospheric pressure (99.2 kPa) and within a temperature range of T ≤ 230°C. Forming PIL between TFA and NMP (methylpyrrolidonium trifluoroacetate [HNMP] + [CF 3 COO] − ) leads to a significant volatility increase of the MeTFA relative to TFA. The pure MeTFA was recovered from the MeTFA‐TFA‐[HNMP] + [CF 3 COO] − mixture in the quantity of 70% from the MeTFA initial mole charge; the total mole recovery was 100%. A significant result of the above experiment is that TFA mole recovery from the MeTFA‐TFA‐[HNMP] + [CF 3 COO] − mixture within a temperature range of T < 187°C exceeds 96%. The distillation of TFA and NMP mixture at T ≤ 230°C demonstrates strong binding of TFA anion that can be seen from the final liquid phase composition TFA/NMP ≈ 0.53/0.47. At the concentration and the temperature ranges under study, there is no NMP in the vapour phase.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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".