{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,3]],"date-time":"2026-04-03T06:40:59Z","timestamp":1775198459313,"version":"3.50.1"},"reference-count":72,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2026,3,29]],"date-time":"2026-03-29T00:00:00Z","timestamp":1774742400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>The rational design of supported ruthenium catalysts for sustainable energy applications requires precise control over metal nanoparticle size, dispersion, and metal\u2013support interactions. This study investigates the influence of mesoporous silica support topology\u2014SBA-15 (2D hexagonal, cylindrical pores), SBA-12 (3D hexagonal structure), and SBA-3 (2D hexagonal)\u2014on the structure and catalytic performance of 1 wt% ruthenium catalysts in CO2 methanation and gas-phase toluene hydrogenation. Comprehensive characterization by nitrogen physisorption, low- and high-angle X-ray diffraction (XRD), H2 temperature-programmed reduction (H2-TPR), CO chemisorption, and transmission electron microscopy (TEM) revealed that support pore architecture dictates ruthenium particle size (1.2 nm for Ru\/SBA-15, 2.8 nm for Ru\/SBA-3, 4.3 nm for Ru\/SBA-12) and dispersion (80%, 35%, 23%, respectively) through geometric confinement effects. Catalytic testing demonstrated contrasting structure\u2013activity relationships: CO2 methanation exhibited strong structure sensitivity with turnover frequency (TOF) increasing with particle size (Pearson\u2019s r = 0.96), favoring Ru\/SBA-3 and Ru\/SBA-12 with near-optimal 3\u20134 nm particles, while toluene hydrogenation showed weaker structure sensitivity, with Ru\/SBA-12 achieving the highest TOF owing to its larger particle size and higher crystallinity. These findings underscore the critical importance of tailoring mesoporous support topology to match reaction-specific structure sensitivity, providing fundamental insights for the design of bifunctional catalysts for hydrogenation reactions.<\/jats:p>","DOI":"10.3390\/molecules31071130","type":"journal-article","created":{"date-parts":[[2026,3,30]],"date-time":"2026-03-30T09:57:24Z","timestamp":1774864644000},"page":"1130","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Catalytic Synergy: Mesoporous Silica and Ruthenium\u2014Structure\u2013Activity Relationships in CO2 Methanation and Toluene Hydrogenation"],"prefix":"10.3390","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9361-1430","authenticated-orcid":false,"given":"Ewa","family":"Janiszewska","sequence":"first","affiliation":[{"name":"Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Pozna\u0144skiego 8, 61-614 Pozna\u0144, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1004-8115","authenticated-orcid":false,"given":"Mariusz","family":"Pietrowski","sequence":"additional","affiliation":[{"name":"Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Pozna\u0144skiego 8, 61-614 Pozna\u0144, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6989-5039","authenticated-orcid":false,"given":"Micha\u0142","family":"Zieli\u0144ski","sequence":"additional","affiliation":[{"name":"Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Pozna\u0144skiego 8, 61-614 Pozna\u0144, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2026,3,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"287","DOI":"10.1016\/S0920-5861(02)00374-7","article-title":"Catalysis and Sustainable (Green) Chemistry","volume":"77","author":"Centi","year":"2003","journal-title":"Catal. 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