109419 20230519145512.0 doi 10.1038/s41467-021-26184-0 sideral 125470 ART-2021-125470 eng Martínez, L. Metal-catalyst-free gas-phase synthesis of long-chain hydrocarbons 2021 Access copy available to the general public Unrestricted Development of sustainable processes for hydrocarbons synthesis is a fundamental challenge in chemistry since these are of unquestionable importance for the production of many essential synthetic chemicals, materials and carbon-based fuels. Current industrial processes rely on non-abundant metal catalysts, temperatures of hundreds of Celsius and pressures of tens of bars. We propose an alternative gas phase process under mild reaction conditions using only atomic carbon, molecular hydrogen and an inert carrier gas. We demonstrate that the presence of CH2 and H radicals leads to efficient C-C chain growth, producing micron-length fibres of unbranched alkanes with an average length distribution between C23-C33. Ab-initio calculations uncover a thermodynamically favourable methylene coupling process on the surface of carbonaceous nanoparticles, which is kinematically facilitated by a trap-and-release mechanism of the reactants and nanoparticles that is confirmed by a steady incompressible flow simulation. This work could lead to future alternative sustainable synthetic routes to critical alkane-based chemicals or fuels. info:eu-repo/grantAgreement/ES/DGA-FSE/E13-20R info:eu-repo/grantAgreement/EC/FP7/610256/EU/Gas and Dust from the Stars to the Laboratory: Exploring the NanoCosmos/NANOCOSMOS info:eu-repo/grantAgreement/EC/H2020/648319/EU/Hybrid Materials for Artificial Photosynthesis/HyMAP This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 648319-HyMAP info:eu-repo/grantAgreement/ES/MICINN/RYC-2018-024561-I info:eu-repo/grantAgreement/ES/MINECO/PID2019--106315RB-I00 info:eu-repo/grantAgreement/ES/MINECO/PID2020-113142RB-C21 info:eu-repo/grantAgreement/ES/MINECO/S2018-NMT-4367 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 17.694 2021 MULTIDISCIPLINARY SCIENCES 6 / 74 = 0.081 2021 Q1 T1 4.846 2021 Chemistry (miscellaneous) 2021 Q1 Biochemistry, Genetics and Molecular Biology (miscellaneous) 2021 Q1 23.2 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Merino, P. Santoro, G. Martínez, J. I. Katsanoulis, S. Ault, J. Mayoral, A. Universidad de Zaragoza (orcid)0000-0002-5229-2717 Vázquez, L. Accolla, M. Dazzi, A. Mathurin, J. Borondics, F. Blázquez-Blázquez, E. Shauloff, N. Lebrón-Aguilar, R. Quintanilla-López, J. E. Jelinek, R. Cernicharo, J. Stone, H. A. de la Peña O’Shea, V. A. de Andres, P. L. Haller, G. Ellis, G. J. Martín-Gago, J. A. 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 12, 1 (2021), [9 pp.] Nature communications 2041-1723 3083156 http://zaguan.unizar.es/record/109419/files/texto_completo.pdf Versión publicada 2164399 http://zaguan.unizar.es/record/109419/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:109419 articulos driver 2023-05-18-15:12:14 ARTICLE