Co-pyrolysis of biomass and polyethylene: Mechanistic insights into functional group transformations on solid matrix

Chemical Engineering Journal, Год журнала: 2024, Номер 482, С. 149166 - 149166

Опубликована: Янв. 28, 2024

Язык: Английский

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Monocyclic aromatic hydrocarbons production from NaOH pretreatment metallized food plastic packaging waste through microwave pyrolysis coupled with ex-situ catalytic reforming

Chemical Engineering Journal, Год журнала: 2024, Номер 484, С. 149777 - 149777

Опубликована: Фев. 16, 2024

Язык: Английский

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Structural Characterization and Molecular Model Construction of Lignite: A Case of Xianfeng Coal

Energies, Год журнала: 2024, Номер 17(5), С. 1049 - 1049

Опубликована: Фев. 23, 2024

The object of the study is lignite. Analytical testing techniques, such as elemental analysis, 13C nuclear magnetic resonance (13C NMR) spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron (XPS), and high-resolution transmission electron microscopy (HRTEM), were used to acquire information on structural parameters aromaticity Xianfeng lignite 43.57%, aromatic carbon structure mainly naphthalene anthracene/phenanthrene. aliphatic dominated by cycloalkanes, alkyl side chains, hydrogenated aromatics. Oxygen present in ether oxygen, carboxyl, carbonyl groups. Nitrogen form pyrrole nitrogen quaternary nitrogen. Sulfur thiophene sulfur. According analysis results, molecular model XF was constructed. formula C184H172O39N6S2. 2D converted a 3D using computer simulation software optimized. optimized has remarkable stereoconfiguration, lamellae are irregularly arranged space. rings connected methylene, hypomethylene, methoxy, rings. In addition, simulated NMR spectra good agreement with experimental spectra. This shows rationality chemical model.

Язык: Английский

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Chemical looping gasification of lignite to syngas using phosphogypsum: Overview and prospects

Journal of Cleaner Production, Год журнала: 2024, Номер 445, С. 141329 - 141329

Опубликована: Фев. 19, 2024

Язык: Английский

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Sustainable off-grid gasification: co-production of electricity, heat, and activated carbon

Energy Materials, Год журнала: 2025, Номер 5(2)

Опубликована: Янв. 10, 2025

The process of gasification is well-known; however, to this day, the applications such facilities, especially off-grid small-scale units for direct electricity and char production, are scarce. In study, an fixed bed downdraft unit studied from gaseous/solid product character perspective. This represents a possible solution emerging call sustainable decentralised energy sources. Softwood chips were utilised in their conversion into synthetic gas (direct supply) solid biochar was observed analysed. results show promising values potential utilisation different outside combustion process, as microbial syngas fermentation, with lower heating value equal 6.31 MJ·m-3. It appears that during steam activation biochar, both high-quality off-gas more than 70%vol. H2 (excluding N2) activated carbon specific surface area 565.87 m2·g-1 can be collected. Further investigations have revealed degradation chemical bonds material morphology changes gasification. microporous structure high make it attractive further development adsorbent sorption cooling devices. Therefore, waste generated within minimised, obtained products will valued favour sustainability remote locations.

Язык: Английский

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Comprehensive analysis of bio-syngas production via the co-pyrolysis of sewage sludge and cotton stalk: products, optimal conditions, kinetics, and synergistic effects

Journal of Analytical and Applied Pyrolysis, Год журнала: 2025, Номер unknown, С. 106980 - 106980

Опубликована: Янв. 1, 2025

Язык: Английский

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Mechanism of phenols evolution during pyrolysis of Shendong coal macerals swelled with oxygen-containing organic solvents: Experimental and DFT study

Chemical Engineering Journal, Год журнала: 2024, Номер 493, С. 152648 - 152648

Опубликована: Май 28, 2024

Язык: Английский

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Indentification of coal-origin structural units by multi-step pyrolysis through Py-GC/MS and by DFT calculation

Chemical Engineering Journal, Год журнала: 2024, Номер 492, С. 152410 - 152410

Опубликована: Май 20, 2024

Язык: Английский

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Molecular structure of coal macerals and thermal response behavior of their chemical bonds obtained by structural characterizations and molecular dynamics simulations

Energy, Год журнала: 2024, Номер 301, С. 131735 - 131735

Опубликована: Май 21, 2024

Язык: Английский

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Macro maceral separation of low-rank coal and the pyrolysis behavior of the maceral-rich fractions

Separation and Purification Technology, Год журнала: 2024, Номер 353, С. 128061 - 128061

Опубликована: Май 22, 2024

Язык: Английский

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