Relationship between Pyrite in the Precursor and the Pore Structure of High‐Surface Area Activated Carbon Preparations
Bibliographic record
Abstract
Abstract High‐surface area activated carbons (HAC) were prepared from analogous sulfur‐containing precursors by using KOH chemical activation. The relationship between pyrite (FeS2) in the precursor and the pore structure of the as‐prepared HAC was investigated comprehensively. The results suggest that FeS2 in the precursor reacts with KOH, producing K2SO4, K2S2O3, K2S, thioether (R‐S‐R'), and Fe3O4, which reduce the actual amount of KOH used to develop the porosity. As a result, the existence of the by‐product Fe3O4 further clarifies that FeS2 in the precursor can consume some amount of KOH, which leads to the decrease in the specific surface area and pore volume of HAC. Interestingly, part of the inorganic sulfur from FeS2 in the precursor can be transformed into organic sulfide R‐S‐R'.
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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".