{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T23:25:59Z","timestamp":1775172359555,"version":"3.50.1"},"reference-count":35,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2023,1,12]],"date-time":"2023-01-12T00:00:00Z","timestamp":1673481600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001807","name":"S\u00e3o Paulo Research Foundation (FAPESP)","doi-asserted-by":"publisher","award":["2020\/08631-3"],"award-info":[{"award-number":["2020\/08631-3"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001807","name":"S\u00e3o Paulo Research Foundation (FAPESP)","doi-asserted-by":"publisher","award":["2021\/10350-5"],"award-info":[{"award-number":["2021\/10350-5"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001807","name":"S\u00e3o Paulo Research Foundation (FAPESP)","doi-asserted-by":"publisher","award":["LA\/P\/0045\/2020 (ALiCE)"],"award-info":[{"award-number":["LA\/P\/0045\/2020 (ALiCE)"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001807","name":"S\u00e3o Paulo Research Foundation (FAPESP)","doi-asserted-by":"publisher","award":["UIDB\/50020\/2020"],"award-info":[{"award-number":["UIDB\/50020\/2020"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001807","name":"S\u00e3o Paulo Research Foundation (FAPESP)","doi-asserted-by":"publisher","award":["UIDP\/50020\/2020 (LSRE-LCM)"],"award-info":[{"award-number":["UIDP\/50020\/2020 (LSRE-LCM)"]}],"id":[{"id":"10.13039\/501100001807","id-type":"DOI","asserted-by":"publisher"}]},{"name":"FCT\/MCTES (PIDDAC)","award":["2020\/08631-3"],"award-info":[{"award-number":["2020\/08631-3"]}]},{"name":"FCT\/MCTES (PIDDAC)","award":["2021\/10350-5"],"award-info":[{"award-number":["2021\/10350-5"]}]},{"name":"FCT\/MCTES (PIDDAC)","award":["LA\/P\/0045\/2020 (ALiCE)"],"award-info":[{"award-number":["LA\/P\/0045\/2020 (ALiCE)"]}]},{"name":"FCT\/MCTES (PIDDAC)","award":["UIDB\/50020\/2020"],"award-info":[{"award-number":["UIDB\/50020\/2020"]}]},{"name":"FCT\/MCTES (PIDDAC)","award":["UIDP\/50020\/2020 (LSRE-LCM)"],"award-info":[{"award-number":["UIDP\/50020\/2020 (LSRE-LCM)"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Catalysts"],"abstract":"<jats:p>This study aimed to synthesize sulfonated polymer resins based on styrene and trimethylolpropane triacrylate (TMPTA) and evaluate their catalytic efficiency in glycerol acetylation. A factorial design was used, with two factors, three levels, and three replicates of the center point. The factors were cross-linker percentage (YTMPTA) and cross-linker feed time (TTMPTA). Ion-exchange capacity, swelling index, and catalytic efficiency were analyzed to characterize each resin. Lower cross-linker percentages resulted in higher catalytic efficiencies, as expected. Resins synthesized with 2, 6, and 10% TMPTA had mean catalytic efficiencies of 215, 176, and 121, respectively. A linear correlation was observed between catalytic efficiency and cross-linker percentage, with R2 = 0.9971. Statistical and kinetic models were developed to represent the experimental results and support the development of strategies to improve resin formulation and synthesis conditions. TMPTA feed time at low and high levels positively influenced catalytic efficiency; the result is attributed to the micro- and macrostructure of resins. This finding was corroborated by the kinetic constants provided by the model.<\/jats:p>","DOI":"10.3390\/catal13010181","type":"journal-article","created":{"date-parts":[[2023,1,13]],"date-time":"2023-01-13T02:05:52Z","timestamp":1673575552000},"page":"181","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Synthesis of Vinyl\u2013Trivinyl Acidic Resins for Application in Catalysis: Statistical Study and Site Accessibility Assessment"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0088-3726","authenticated-orcid":false,"given":"William M.","family":"Godoy","sequence":"first","affiliation":[{"name":"Department of Chemical Engineering, Engineering School of Lorena, University of S\u00e3o Paulo, Lorena 12602-810, SP, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2055-9317","authenticated-orcid":false,"given":"Leandro G.","family":"Aguiar","sequence":"additional","affiliation":[{"name":"Department of Chemical Engineering, Engineering School of Lorena, University of S\u00e3o Paulo, Lorena 12602-810, SP, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4397-6578","authenticated-orcid":false,"given":"Nuno A. B. S.","family":"Gra\u00e7a","sequence":"additional","affiliation":[{"name":"LSRE-LCM, Associate Laboratory ALiCE, Department of Chemical Engineering, Faculty of Engineering, University of Porto (FEUP), 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0715-4761","authenticated-orcid":false,"given":"Al\u00edrio E.","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"LSRE-LCM, Associate Laboratory ALiCE, Department of Chemical Engineering, Faculty of Engineering, University of Porto (FEUP), 4200-465 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"025509","DOI":"10.1088\/2053-1591\/ab6e7a","article-title":"Adsorption potential of macroporous Amberlyst-15 for Cd(II) removal from aqueous solutions Adsorption potential of macroporous Amberlyst-15 for Cd(II) removal from aqueous solutions","volume":"7","author":"Razzaq","year":"2020","journal-title":"Mater. 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