{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,16]],"date-time":"2026-04-16T04:07:23Z","timestamp":1776312443966,"version":"3.50.1"},"reference-count":54,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2019,12,1]],"date-time":"2019-12-01T00:00:00Z","timestamp":1575158400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UID\/EQU\/00511\/2019 \u2013 LEPABE"],"award-info":[{"award-number":["UID\/EQU\/00511\/2019 \u2013 LEPABE"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["POCI-01-0145-FEDER-030277"],"award-info":[{"award-number":["POCI-01-0145-FEDER-030277"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"name":"COMPETE2020 \u2013 Programa Operacional Competitividade e Internacionaliza\u00e7\u00e3o","award":["POCI-01-0145-FEDER-030277"],"award-info":[{"award-number":["POCI-01-0145-FEDER-030277"]}]},{"DOI":"10.13039\/501100008530","name":"European Regional Development Fund","doi-asserted-by":"publisher","award":["POCI-01-0145-FEDER-030277"],"award-info":[{"award-number":["POCI-01-0145-FEDER-030277"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008530","name":"European Regional Development Fund","doi-asserted-by":"publisher","award":["\"LEPABE-2-ECO-INNOVATION\u201d \u2013 NORTE\u201001\u20100145\u2010FEDER\u2010000005"],"award-info":[{"award-number":["\"LEPABE-2-ECO-INNOVATION\u201d \u2013 NORTE\u201001\u20100145\u2010FEDER\u2010000005"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Norte Portugal Regional Operational Programme","award":["\"LEPABE-2-ECO-INNOVATION\u201d \u2013 NORTE\u201001\u20100145\u2010FEDER\u2010000005"],"award-info":[{"award-number":["\"LEPABE-2-ECO-INNOVATION\u201d \u2013 NORTE\u201001\u20100145\u2010FEDER\u2010000005"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Catalysts"],"abstract":"<jats:p>In this work, in-house synthesized NiMgAl, Ru\/NiMgAl, and Ru\/SiO2 catalysts and a commercial ruthenium-containing material (Ru\/Al2O3com.) were tested for CO2 methanation at 250, 300, and 350 \u00b0C (weight hourly space velocity, WHSV, of 2400 mLN,CO2\u00b7g\u22121\u00b7h\u22121). Materials were compared in terms of CO2 conversion and CH4 selectivity. Still, their performances were assessed in a short stability test (24 h) performed at 350 \u00b0C. All catalysts were characterized by temperature programmed reduction (TPR), X-ray diffraction (XRD), N2 physisorption at \u2212196 \u00b0C, inductively coupled plasma optical emission spectrometry (ICP-OES), and H2\/CO chemisorption. The catalysts with the best performance (i.e., the hydrotalcite-derived NiMgAl and Ru\/NiMgAl) seem to be quite promising, even when compared with other methanation catalysts reported in the literature. Extended stability experiments (240 h of time-on-stream) were performed only over NiMgAl, which was selected based on catalytic performance and estimated price criteria. This catalyst showed some deactivation under conditions that favor CO formation (high temperature and high WHSV, i.e., 350 \u00b0C and 24,000 mLN,CO2\u00b7g\u22121\u00b7h\u22121, respectively), but at 300 \u00b0C and low WHSV, excellent activity (ca. 90% of CO2 conversion) and stability, with nearly complete selectivity towards methane, were obtained.<\/jats:p>","DOI":"10.3390\/catal9121008","type":"journal-article","created":{"date-parts":[[2019,12,2]],"date-time":"2019-12-02T10:50:45Z","timestamp":1575283845000},"page":"1008","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":42,"title":["CO2 Methanation over Hydrotalcite-Derived Nickel\/Ruthenium and Supported Ruthenium Catalysts"],"prefix":"10.3390","volume":"9","author":[{"given":"Joana A.","family":"Martins","sequence":"first","affiliation":[{"name":"LEPABE, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s\/n, 4200-465 Porto, Portugal"}]},{"given":"A. Catarina","family":"Faria","sequence":"additional","affiliation":[{"name":"LEPABE, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s\/n, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4694-3680","authenticated-orcid":false,"given":"Miguel A.","family":"Soria","sequence":"additional","affiliation":[{"name":"LEPABE, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s\/n, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2744-7115","authenticated-orcid":false,"given":"Carlos V.","family":"Miguel","sequence":"additional","affiliation":[{"name":"LEPABE, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s\/n, 4200-465 Porto, Portugal"}]},{"given":"Al\u00edrio E.","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"LSRE-LCM, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s\/n, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1893-5467","authenticated-orcid":false,"given":"Lu\u00eds M.","family":"Madeira","sequence":"additional","affiliation":[{"name":"LEPABE, Chemical Engineering Department, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias s\/n, 4200-465 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2019,12,1]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1711","DOI":"10.1039\/c3ee00056g","article-title":"Catalysis for CO2 conversion: A key technology for rapid introduction of renewable energy in the value chain of chemical industries","volume":"6","author":"Centi","year":"2013","journal-title":"Energy Environ. 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