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Functionalized graphene sheet as a dispersible fuel additive for catalytic decomposition of methylcyclohexane (proof PDF)

Summary

This slug points to an Elsevier “Article in Press” proof PDF for the same Combustion and Flame study as [[2020sim-combustion-a-functionalized-graphene]] (DOI 10.1016/j.combustflame.2020.04.002). The work couples a high-pressure flow reactor investigation of methylcyclohexane (MCH) decomposition under supercritical conditions with ReaxFF reactive MD in AMS/ADF. Experiments span 780–825 K at 4.72 MPa with 50 ppmw FGS; the abstract reports increased fuel conversion and C₁–C₂ product yields (about +43.3% and +62.1% respectively at 820 K with 50 ppmw FGS). MD is run at 1700, 1800, and 1900 K with Berendsen thermostat, NVT ensemble, 0.25 fs timestep, and density ~0.31 g/cm³, matching the primary page’s description of FGS oxygen groups, C₇H₁₃ formation, and early H / CH₃ / C₂H₅ chemistry. This page keeps the proof artifact for manifest provenance; use [[2020sim-combustion-a-functionalized-graphene]] for the non-proof PDF when citing pagination and the issue-of-record.

Methods

1 — MD application. Same protocol summary as the VOR page: reactive molecular dynamics with ReaxFF C/H/O in AMS/ADF (engine as published); MCH fuel molecules interacting with FGS in a periodic simulation cell (PBC), full atom counts in Section 3 of the VOR PDF. NVT; Berendsen thermostat; 0.25 fs time step; 1700, 1800, 1900 K; ~0.31 g cm⁻³; multi-ns segments. N/A — NPT; N/A — electric field; N/A — enhanced sampling beyond the authors’ standard MD. Full staging is in the VOR Section 3 and on [[2020sim-combustion-a-functionalized-graphene]].

2 — High-pressure flow reactor (experiment). Supercritical MCH, 4.72 MPa, 780–825 K, 50 ppmw FGC as in the article abstract; GC/MS in the full text. N/A — in situ diagnostics beyond the article text for this proof slug (partial extract).

3 — Force-field training. N/A — same published ReaxFF as the study; not refit in the manuscript.

4 — Static QM. N/A for a standalone in-paper DFT block.

5 — Review / non-simulation. N/A.

Findings

Outcomes. The proof abstract is consistent with the curated VOR page: FGS increases MCH conversion and C₁–C₂ yields; MD highlights oxygen on FGS in MCH decomposition and C₇H₁₃ / early-radical chemistry. N/A — new results beyond the primary article; provenance of this file is the only distinction.

Comparisons and sensitivity. Same qualitative points as the VOR page: large T gap between MD and reactor (qualitative use).

Authored limitations. Proof PDFs may have layout and line-number artifacts relative to the final issue of record; use [[2020sim-combustion-a-functionalized-graphene]] for canonical pagination when possible.

Corpus honesty. Protocol minutiae are tracked on the VOR pdf_path; this proof is partial extract quality for automated pipelines.

Limitations

Proof PDFs may show layout differences, line numbers, and headers absent from the final issue. Large T gaps between MD and experiment limit quantitative rate mapping.

Relevance to group

van Duin co-authorship; combustion / endothermic fuel chemistry with ReaxFF and experimental validation.

Citations and evidence anchors

Reader notes (navigation)