2026-04-14T04:10:39Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/278422025-12-05T14:57:33Zcom_2072_452955com_2072_2054col_2072_453073

2025-12-05T14:57:33Z urn:hdl:10256/27842 Carbon-supported ZnO materials for sulfur capturing in supercritical water Maxim, Florentina Stoian, Giuseppe Stefan Toma, Elena Ecaterina Borca, Camelia Nicoleta Müller Gubler, Elisabeth Agnes Atkinson, Irina Torrent Fàbrega, Laura Ludwig, Christian Testino, Andrea Química verda Green chemistry Biomassa -- Gasificació Biomass gasification Sostenibilitat Sustainability Sulfur (S) capturing materials working at supercritical water (SCW) conditions need to be designed and developed to overcome issues related with catalyst poisoning during the hydrothermal gasification of wet biomass, an efficient and sustainable technology for alternative fuels production. Sorbent materials of zinc oxide (ZnO) deposited on porous carbon (C) support were prepared by an innovative continuous flow SCW impregnation method. Their S-adsorption performance was tested under the same supercritical conditions in the presence of sodium hydrosulfide (NaHS), as model inorganic sulfur compound. During sulfidation experiments, ZnS replaced ZnO indicating an efficient chemisorption of S with the formation of the sulfide particles by a pseudomorphic replacement mechanism. The S adsorption capacity of the ZnO/C composites reaches 1.55 molS/molZn at relatively low temperature, which is much higher than those of other reported S capturing materials employed in SCW processes. The results reported here confirm that S sorbents can be both generated and used under the continuous flow SCW conditions relevant for technological applications towards the production of hydrogen and methane from biomass wastes and residues 2025-12-05T14:57:33Z 2025-12-05T14:57:33Z 2025-04-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed http://hdl.handle.net/10256/27842 info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-025-98741-2 info:eu-repo/semantics/altIdentifier/eissn/2045-2322 Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Nature Publishing Group Scientific Reports, 2025, vol. 15, art.núm.14239 Articles publicats (D-Q) Maxim, Florentina Stoian, Giuseppe Stefan Toma, Elena Ecaterina Borca, Camelia Nicoleta Müller Gubler, Elisabeth Agnes Atkinson, Irina Torrent Fàbrega, Laura Ludwig, Christian Testino, Andrea 2025 Carbon-supported ZnO materials for sulfur capturing in supercritical water Scientific Reports 15 art.núm.14239