Kinetics of Methane Nonoxidative Aromatization over Ru−Mo/HZSM-5 Catalyst
Bibliographic record
Abstract
Kinetic study of oxygen-free methane dehydrogenation and aromatization over Ru−Mo/HZSM-5 was carried out in a fixed-bed differential reactor under atmospheric pressure. The reaction temperature was varied between 873 and 973 K, and the methane feed fraction ranged from 50 to 90% v/v. A plausible reaction pathway involved in oxygen-free methane dehydrogenation and aromatization over Ru−Mo/HZSM-5 was proposed. Different models based on Langmuir−Hinshelwood−Hougen−Watson reaction mechanisms were tested to correlate the kinetic data. Among these models, the one postulating that the surface dehydrogenation reaction of adsorbed methane is rate-determining was successful in terms of physical likeliness (thermodynamic and kinetic parameters) and statistical goodness of fit. The activation energy, adsorption enthalpy, and entropy frequency were evaluated by means of Arrhenius or Van't Hoff relationships.
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 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 | 0.005 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".