{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,17]],"date-time":"2026-02-17T02:44:18Z","timestamp":1771296258318,"version":"3.50.1"},"reference-count":60,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2021,7,21]],"date-time":"2021-07-21T00:00:00Z","timestamp":1626825600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","award":["PTDC\/EQU-EPQ\/31926\/2017"],"award-info":[{"award-number":["PTDC\/EQU-EPQ\/31926\/2017"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","award":["UIDB\/50006\/2020"],"award-info":[{"award-number":["UIDB\/50006\/2020"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e Tecnologia","award":["UIDB\/00100\/2020"],"award-info":[{"award-number":["UIDB\/00100\/2020"]}]},{"name":"Ministerio de Ciencia y Universidades","award":["RTI2018-097456-B-I00"],"award-info":[{"award-number":["RTI2018-097456-B-I00"]}]},{"DOI":"10.13039\/501100008530","name":"European Regional Development Fund","doi-asserted-by":"publisher","award":["POCI-01-0145-FEDER-016387"],"award-info":[{"award-number":["POCI-01-0145-FEDER-016387"]}],"id":[{"id":"10.13039\/501100008530","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Catalysts"],"abstract":"<jats:p>In this work, the ionic liquid [Aliquat][Cl] was supported into alginate and silica aerogel matrices and applied as a catalyst in the cycloaddition reaction between CO2 and a bio-based epoxide (limonene oxide). The efficiency of the alginate aerogel system is much higher than that of the silica one. The method of wet impregnation was used for the impregnation of the aerogel with [Aliquat][Cl] and a zinc complex. The procedure originated a well-defined thin solvent film on the surface of support materials. Final materials were characterised by Fourier Transform Infrared Spectroscopy, N2 Adsorption\u2013Desorption Analysis, X-ray diffraction, atomic absorption and Field Emission Scanning Microscopy. Several catalytic tests were performed in a high-pressure apparatus at 353.2 K and 4 MPa of CO2.<\/jats:p>","DOI":"10.3390\/catal11080872","type":"journal-article","created":{"date-parts":[[2021,7,21]],"date-time":"2021-07-21T11:53:23Z","timestamp":1626868403000},"page":"872","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["A Bio-Based Alginate Aerogel as an Ionic Liquid Support for the Efficient Synthesis of Cyclic Carbonates from CO2 and Epoxides"],"prefix":"10.3390","volume":"11","author":[{"given":"Ana B.","family":"Paninho","sequence":"first","affiliation":[{"name":"LAQV, REQUIMTE, Departamento de Qu\u00edmica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal"},{"name":"High Pressure Processes Group, Industrial Engineering School, Department of Chemical Engineering and Environmental Technology, University of Valladolid, C\/Dr. Mergelina, s\/n, 47011 Valladolid, Spain"}]},{"given":"Ana N.","family":"Mustapa","sequence":"additional","affiliation":[{"name":"High Pressure Processes Group, Industrial Engineering School, Department of Chemical Engineering and Environmental Technology, University of Valladolid, C\/Dr. Mergelina, s\/n, 47011 Valladolid, Spain"},{"name":"School of Chemical Engineering, College of Engineering, Universiti Teknologi MARA (UiTM), Shah Alam 40450, Selangor, Malaysia"}]},{"given":"Kamran T.","family":"Mahmudov","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8323-888X","authenticated-orcid":false,"given":"Armando J. L.","family":"Pombeiro","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4836-2409","authenticated-orcid":false,"given":"M. F\u00e1tima C.","family":"Guedes da Silva","sequence":"additional","affiliation":[{"name":"Centro de Qu\u00edmica Estrutural, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1693-2895","authenticated-orcid":false,"given":"Mar\u00eda D.","family":"Bermejo","sequence":"additional","affiliation":[{"name":"High Pressure Processes Group, Industrial Engineering School, Department of Chemical Engineering and Environmental Technology, University of Valladolid, C\/Dr. Mergelina, s\/n, 47011 Valladolid, Spain"}]},{"given":"\u00c1ngel","family":"Mart\u00edn","sequence":"additional","affiliation":[{"name":"High Pressure Processes Group, Industrial Engineering School, Department of Chemical Engineering and Environmental Technology, University of Valladolid, C\/Dr. Mergelina, s\/n, 47011 Valladolid, Spain"}]},{"given":"Mar\u00eda J.","family":"Cocero","sequence":"additional","affiliation":[{"name":"High Pressure Processes Group, Industrial Engineering School, Department of Chemical Engineering and Environmental Technology, University of Valladolid, C\/Dr. Mergelina, s\/n, 47011 Valladolid, Spain"}]},{"given":"Ana V. M.","family":"Nunes","sequence":"additional","affiliation":[{"name":"LAQV, REQUIMTE, Departamento de Qu\u00edmica, Faculdade de Ci\u00eancias e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,7,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1016\/j.supflu.2017.12.023","article-title":"Carbon dioxide utilization\u2013Electrochemical reduction to fuels and synthesis of polycarbonates","volume":"134","author":"Machado","year":"2018","journal-title":"J. Supercrit. 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