Amine‐functionalized CuBTC/poly(ether‐b‐amide‐6) (Pebax<sup>®</sup> MH 1657) mixed matrix membranes for CO<sub>2</sub>/CH<sub>4</sub> separation
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Bibliographic record
Abstract
Abstract CuBTC and NH 2 ‐CuBTC metal organic frameworks (MOF) were used to produce mixed matrix membranes (MMM) with a block copolymer of poly(ether‐b‐amide‐6) (Pebax ® MH 1657) as the polymer matrix to investigate the effect of amine functionalized group (–NH 2 ) on the CO 2 /CH 4 gas separation performance of the MMM. The MOF were fully characterized by XRD, FTIR‐ATR, TGA, N 2 , CO 2 , and CH 4 adsorption, while the MMM were characterized using FTIR‐ATR, TGA, DSC, and SEM. Permeability and selectivity of the MMM were studied at different MOF mass contents (5 to 20 g/g) and feed pressures (0.3 to 1.5 MPa) for pure and mixed gases. The CO 2 permeability for 20 g/g of both Pebax/CuBTC and Pebax/NH 2 ‐CuBTC MMMs was nearly twice that of the neat polymeric membrane, while the presence of amine functionalized group in NH 2 ‐CuBTC produced an increasing trend of CO 2 /CH 4 ideal selectivity at high NH 2 ‐CuBTC loading and about a 60 % increase was observed at 20 g/g of NH 2 ‐CuBTC.
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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) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 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 | 0.001 |
| 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 it