Hydrogenation of Styrene‐Butadiene Rubber Catalyzed by Ru(CHCHPh)Cl(CO)(PCy<sub>3</sub>)<sub>2</sub>
Bibliographic record
Abstract
Abstract Summary: The hydrogenation of a copolymer of styrene and butadiene (SBR) catalyzed by Ru(CHCHPh)Cl(CO)(PCy 3 ) 2 was experimentally investigated within the temperature range of 120–160 °C, at P of 300–1 200 psi, and a catalyst concentration of 10–78 × 10 −6 M . Special attention was paid to minimizing the catalyst metal residue and crosslinking in the product. The results indicated that high‐quality hydrogenated SBR was achieved without crosslinking and the metal residue was less than 7 ppm without a post‐treatment. IR spectra of the styrene–butadiene rubber before (a) and after (b) hydrogenation with the Ru(CHCHPh)Cl(CO)(PCy 3 ) 2 catalyst were observed as reported here. The disappearance of all characteristic absorbencies of CC (724, 910, 967, and 994 cm −1 ) suggests nearly quantitative hydrogenation of the CC bonds. image IR spectra of the styrene–butadiene rubber before (a) and after (b) hydrogenation with the Ru(CHCHPh)Cl(CO)(PCy 3 ) 2 catalyst were observed as reported here. The disappearance of all characteristic absorbencies of CC (724, 910, 967, and 994 cm −1 ) suggests nearly quantitative hydrogenation of the CC bonds.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.002 | 0.001 |
| 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".