Vanadium substituted SBA‐15 supported bimetallic Pt, Pd catalysts for hydrogenation of toluene to methylcyclohexane
Bibliographic record
Abstract
Highly dispersed Pt–Pd nanoparticles are synthesised within the channels of a mesoporous V‐SBA‐15 support followed by thorough catalyst characterisation (BET surface area and CO chemisorptions techniques) and testing in the selective hydrogenation of toluene to methylcyclohexane. The hydrogenation reaction is investigated under varied conditions of temperature, pressure, hydrogen to feed ratio and WHSV, respectively. Furthermore, detailed kinetics of hydrogenation is investigated. Typically, 100% conversion of toluene into methylcyclohexane is achieved at 498 K and 20 bar pressure and no other products like, 1,2‐ and 1,3‐dimethyl cyclopentane and ethylcyclopentane were also observed due to isomerisation and cracking reactions. The activation energy of the reaction was found to be 51.22 kJ/mol. Thus, the obtained results are discussed with respect to the role of vanadium in hydrogenation reaction over SBA‐15 framework.
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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 | 0.002 | 0.002 |
| 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 | 0.001 | 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".