Production of isophthalic acid from M‐Xylene catalyzed by Co(II) and HPW@C modified with ZnCl<sub>2</sub> solution
Bibliographic record
Abstract
Abstract The production of isophthalic acid (IPA) from the oxidation of m‐xylene (MX) with air can be sped up by Co(II) and phosphotungstic acid (HPW) loaded on activated carbon. In this paper, activated carbon is modified with a ZnCl2 solution to improve the catalytic performance of the HPW@C catalyst. The experiments indicate that the optimum modification condition is the carbon immersed in a 0.10 mol L−1 ZnCl2 solution for 6 h at the temperature of 40 °C followed by being carbonized at 600 °C for 4 h. The characterization proves that the ZnCl2 modification leads to the increase of surface area and acidic groups on the activated carbon. The MX conversion catalyzed by the HPW@C prepared from the carbon modified is 7.0 % over that by the HPW@C from the original carbon and the IPA produced by the modified sample is 78.9 % over that produced by the original one.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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".