Microwave-Assisted Synthesis of Magnetic Carboxymethyl Cellulose-Embedded Ag–Fe<sub>3</sub>O<sub>4</sub> Nanocatalysts for Selective Carbonyl Hydrogenation
Bibliographic record
Abstract
Magnetic nanoparticles enable an effortless catalyst recovery at the end of a chemical reaction, and therefore contribute to more sustainable and greener industrial processes. Herein we report the synthesis of magnetically retrievable Ag NPs for the catalytic hydrogenation and oxidation of aldehydes in water. Upon brief exposure to microwave irradiation, Ag and Fe 3 O 4 NPs formed directly within carboxymethyl cellulose (CMC), an inexpensive, biobased polymer support. The catalyst was tested for the hydrogenation of aldehydes in water, showing a high activity and selectivity to C═O bonds against C═C bonds. Aldehydes can also be oxidized to the corresponding carboxylic acid with the same catalyst, even with substrates that do not self-oxidize under air. The organic matrix and the magnetic support allowed the catalyst to be recycled up to five times with negligible metal leaching in the reaction medium.
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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) | 0.000 | 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) | 0.001 | 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 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".