Quinoline adsorption from organic phase on <scp>X</scp> ‐type zeolites: Experimental and <scp>DFT</scp> study
Bibliographic record
Abstract
Abstract In this study, the adsorptive denitrogenation from organic phase over zeolite adsorbents was studied by batch adsorption experiments. An appropriate amount of quinoline as a nitrogen‐containing compound was dissolved in iso‐octane and utilized as feed. The physicochemical properties of the adsorbents were characterized by X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N 2 physical adsorption, and energy‐dispersive X‐ray spectroscopy (EDS). The NiX zeolites showed a higher ion‐exchange degree and lower crystallinity. The maximum adsorption capacity and kinetic constant of CrX zeolite as compared to NaX zeolite were improved by 10% and 70%, respectively. Based on the kinetic and thermodynamic studies, it was found that CrX zeolite is a very efficient adsorbent for the removal of quinoline from iso‐octane. Also, the underlying mechanism for quinoline adsorption on parent X and ion‐exchanged zeolite was investigated by the density functional theory (DFT) method. DFT results indicated that among all the cations in zeolites, Cr 3+ shows the strongest interaction with nitrogen in the quinoline molecule. The used parent NaX and ion‐exchanged zeolite can also be regenerated by ethanol elution and heating at 573 K, and 65% to 90% of the adsorption capacity of the zeolites was regenerated by these methods.
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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".