dc.contributor.author | Gutiérrez Ortiz, Miguel Angel | |
dc.contributor.author | Reynoso Estévez, Alberto José ![ORCID](/themes/Mirage2//images/orcid_16x16.png) | |
dc.contributor.author | Ayastuy Arizti, Jose Luis | |
dc.date.accessioned | 2024-02-08T11:41:16Z | |
dc.date.available | 2024-02-08T11:41:16Z | |
dc.date.issued | 2023-12 | |
dc.identifier.citation | Journal of Industrial and Engineering Chemistry : (2023) | es_ES |
dc.identifier.issn | 1226-086X | |
dc.identifier.uri | http://hdl.handle.net/10810/65699 | |
dc.description.abstract | Catalytic properties of Ni and NiPt catalysts supported onto naturally derived hydroxyapatite (HAp) were investigated for the Water-Gas Shift (WGS) reaction in the 200–450 °C range. HAp was obtained by thermochemical conversion of waste animal bones which yield a porous solid mainly composed by apatite. A feed composition representative of real reformer outlet stream was used (CO/H2O/CO2/H2 = 5/46/4/31 mol %) at a gas hourly space velocity of 120,000 h−1. The catalysts were thoroughly characterised by N2 physisorption, ICP-AES, H2-chemisorption, XPS, FTIR, SEM-EDX, XRD, H2-TPR, CO2-TPD, and NH3-TPD. From the light-off catalytic tests, it was found that all catalysts reached the equilibrium CO conversion in the 350–400 °C range. Pt doping into pristine Ni/HAp did not enhance neither catalytic activity nor selectivity to hydrogen. Interestingly, thermochemical activation (acid treatment) aimed to reduce the CH4 formation (@ 350 °C) by around two-fold (25 % vs. 9–14 %) with a concomitant increase in the hydrogen yield. Moreover, catalytic stability was also improved. For instance, after 30 h TOS CO conversion dropped by 50 % for the pristine Ni/HAp and only 7 % for NiPt/SHAp catalyst. Similarly, the latter showed the highest and most stable hydrogen yield throughout all the long-term test. | es_ES |
dc.description.sponsorship | Ministerio de Ciencia, Innovación y Universidades MCIN/AEI/10.13039/501100011033
Gobierno Vasco, GV-2018-00038 | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | Elsevier | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | bioapatite | es_ES |
dc.subject | Nickel | |
dc.subject | wate-gas shift (WGS) | |
dc.subject | K2CO3 | |
dc.subject | H2SO4 | |
dc.title | Ni supported on bioapatite for WGS: Improving catalyst stability and H2 selectivity by Pt-doping and thermochemical activation of the support | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2023 The Authors. Published by Elsevier B.V. on behalf of The Korean Society of Industrial and Engineering Chemistry under CC BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/ | es_ES |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S1226086X23007967 | |
dc.identifier.doi | 10.1016/j.jiec.2023.12.003 | |
dc.departamentoes | Ingeniería química | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa | es_ES |