{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:09:31Z","timestamp":1760148571054,"version":"build-2065373602"},"reference-count":39,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2023,5,13]],"date-time":"2023-05-13T00:00:00Z","timestamp":1683936000000},"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 a Tecnologia (FCT)","award":["UIDB\/00100\/2020 (CQE)","UIDB\/04028\/2020 (CQE)","UIDB\/04028\/2020","UIDP\/04028\/2020 (CERENA)","LA\/P\/0056\/2020","DL57"],"award-info":[{"award-number":["UIDB\/00100\/2020 (CQE)","UIDB\/04028\/2020 (CQE)","UIDB\/04028\/2020","UIDP\/04028\/2020 (CERENA)","LA\/P\/0056\/2020","DL57"]}]},{"name":"Institute of Molecular Sciences (IMS) Associate Laboratory funded by FCT","award":["UIDB\/00100\/2020 (CQE)","UIDB\/04028\/2020 (CQE)","UIDB\/04028\/2020","UIDP\/04028\/2020 (CERENA)","LA\/P\/0056\/2020","DL57"],"award-info":[{"award-number":["UIDB\/00100\/2020 (CQE)","UIDB\/04028\/2020 (CQE)","UIDB\/04028\/2020","UIDP\/04028\/2020 (CERENA)","LA\/P\/0056\/2020","DL57"]}]},{"name":"FCT","award":["UIDB\/00100\/2020 (CQE)","UIDB\/04028\/2020 (CQE)","UIDB\/04028\/2020","UIDP\/04028\/2020 (CERENA)","LA\/P\/0056\/2020","DL57"],"award-info":[{"award-number":["UIDB\/00100\/2020 (CQE)","UIDB\/04028\/2020 (CQE)","UIDB\/04028\/2020","UIDP\/04028\/2020 (CERENA)","LA\/P\/0056\/2020","DL57"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Glycerin, a low-valued waste from biodiesel production, and dopamine were used as precursors for adsorbent materials. The study is centered on the preparation and application of microporous activated carbon as adsorbent materials in the separation of ethane\/ethylene and of gases that are natural gas or landfill gas components (ethane\/methane and carbon dioxide\/methane). The activated carbons were produced by the following sequence reactions: facile carbonization of a glycerin\/dopamine mixture and chemical activation. Dopamine allowed the introduction of nitrogenated groups that improved the selectivity of the separations. The activating agent was KOH, but its mass ratio was kept lower than one to improve the sustainability of the final materials. The solids were characterized by N2 adsorption\/desorption isotherms, SEM, FTIR spectroscopy, elemental analysis, and point of zero charges (pHPZC). The order for adsorption of the different adsorbates (in mmolg\u22121) on the most well performing material\u2014Gdop0.75\u2014is methane (2.5) &lt; carbon dioxide (5.0) &lt; ethylene (8.6) &lt; ethane (8.9).<\/jats:p>","DOI":"10.3390\/molecules28104071","type":"journal-article","created":{"date-parts":[[2023,5,15]],"date-time":"2023-05-15T02:02:11Z","timestamp":1684116131000},"page":"4071","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Novel Carbonaceous Adsorbents Prepared from Glycerin Waste and Dopamine for Gas Separation"],"prefix":"10.3390","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9526-5049","authenticated-orcid":false,"given":"Mary","family":"Batista","sequence":"first","affiliation":[{"name":"CQE, Centro de Qu\u00edmica Estrutural, Institute of Molecular Sciences, Departamento de Qu\u00edmica e Bioqu\u00edmica, Faculdade de Ci\u00eancias, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9916-4192","authenticated-orcid":false,"given":"Renato","family":"Carvalho","sequence":"additional","affiliation":[{"name":"IBEROL, Sociedade Ib\u00e9rica de Biocombust\u00edveis e Oleaginosas, S.A., 2600-531 Alhandra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3061-9632","authenticated-orcid":false,"given":"Mois\u00e9s L.","family":"Pinto","sequence":"additional","affiliation":[{"name":"CERENA, Departamento de Engenharia Qu\u00edmica, Instituto Superior T\u00e9cnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8374-558X","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Pires","sequence":"additional","affiliation":[{"name":"CQE, Centro de Qu\u00edmica Estrutural, Institute of Molecular Sciences, Departamento de Qu\u00edmica e Bioqu\u00edmica, Faculdade de Ci\u00eancias, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,5,13]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"220100","DOI":"10.4491\/eer.2022.100","article-title":"Activated carbon: A review of residual precursors, cynthesis processes, characterization techniques, and applications in the improvement of biogas","volume":"28","author":"Sosa","year":"2023","journal-title":"Environ. 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