Evaluation of Cu/SAPO-34 Catalysts Prepared by Solid-State and Liquid Ion-Exchange Methods for NOx Removal by NH3-SCR
dc.contributor.author | Urrutxua Andia, Maitane | |
dc.contributor.author | Pereda Ayo, Beñat | |
dc.contributor.author | De La Torre Larrañaga, Unai ![]() | |
dc.contributor.author | González Velasco, Juan Ramón | |
dc.date.accessioned | 2020-01-17T13:08:44Z | |
dc.date.available | 2020-01-17T13:08:44Z | |
dc.date.issued | 2019-09-17 | |
dc.identifier.citation | ACS Omega 4(12) : 14699-14713 (2019) | es_ES |
dc.identifier.issn | 2470-1343 | |
dc.identifier.uri | http://hdl.handle.net/10810/38600 | |
dc.description.abstract | Cu/SAPO-34 catalysts are prepared using solid-state ion exchange (SSIE) and liquid ion exchange (LIE). SSIE is conducted by calcining a physical mixture of H-SAPO-34 zeolite and CuO nanoparticles at elevated temperatures (500-800 degrees C). The conventional LIE method is conducted by exchanging Na-SAPO-34 with Cu(COOCH3)(2) aqueous solution with a final calcination step at 500 degrees C. Catalysts were fully characterized, focusing on Cu species identification. The NH3-SCR activity is evaluated for NOx removal. Cu/SAPO-34 catalysts synthesized by SSIE at 700 degrees C achieved an optimal reaction rate, which was correlated with a higher proportion of Cu2+ ions. The activation energies of Cu/SAPO-34 catalysts prepared by SSIE and LIE with varying copper loadings are 32-38 and 42-47 kJ mol(-1), respectively. The SSIE catalysts achieve higher turnover frequency than LIE catalysts for a similar copper content, which decreases on increasing the copper loading. These results provide evidence that Cu ions exchanged into the Cu/SAPO-34 catalysts synthesized by SSIE present higher activity than those prepared by LIE for NOx removal by NH3-SCR. | es_ES |
dc.description.sponsorship | The authors wish to acknowledge the financial support provided by the Spanish Economy and Competitiveness Ministry (CTQ2015-67597-2-1-R) and the Basque Government (IT657-013 and IT1297-19). Also, technical support by SGIker (UPV/EHU Advanced Research Facilities) is acknowledged. The assistance of Prof. Luis Lezama during EPR analysis and interpretation is gratefully acknowledged. U.D.-L.T. and M. U. want to acknowledge UPV/EHU and the Spanish Economy and Competitiveness for the postdoc (ESPDOC16/69) and Ph.D. (BFI-2010-330) research grants, respectively. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | American Chemical Society | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/CTQ2015-67597-2-1-R | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/BFI-2010-330 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.subject | hydrothermal stability | es_ES |
dc.subject | active-sites | es_ES |
dc.subject | Cu-SAPO-34 catalysts | es_ES |
dc.subject | Cu-SSZ-13 catalyst | es_ES |
dc.subject | zeolite catalysts | es_ES |
dc.subject | deno(x) activity | es_ES |
dc.subject | SSZ-13 zeolite | es_ES |
dc.subject | BEA zeolite | es_ES |
dc.subject | copper ions | es_ES |
dc.subject | reduction | es_ES |
dc.title | Evaluation of Cu/SAPO-34 Catalysts Prepared by Solid-State and Liquid Ion-Exchange Methods for NOx Removal by NH3-SCR | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License, which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes. | es_ES |
dc.rights.holder | Atribución-NoComercial-SinDerivadas 3.0 España | * |
dc.relation.publisherversion | https://www.ncbi.nlm.nih.gov/pubmed?Db=pubmed&Cmd=Retrieve&list_uids=31552309&dopt=abstractplus | es_ES |
dc.identifier.doi | 10.1021/acsomega.9b01118 | |
dc.departamentoes | Ingeniería química | es_ES |
dc.departamentoeu | Ingeniaritza kimikoa | es_ES |
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