{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,19]],"date-time":"2025-12-19T09:51:38Z","timestamp":1766137898513,"version":"build-2065373602"},"reference-count":31,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2022,1,27]],"date-time":"2022-01-27T00:00:00Z","timestamp":1643241600000},"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 Tecnologia","doi-asserted-by":"publisher","award":["SFRH\/BD\/139627\/2018","UIDB\/50006\/2020","UIDP\/50006\/2020","LA\/P\/0008\/2020","PTDC\/CTM-TM\/30326\/2017","IF\/01016\/2014","IF\/00355\/2012"],"award-info":[{"award-number":["SFRH\/BD\/139627\/2018","UIDB\/50006\/2020","UIDP\/50006\/2020","LA\/P\/0008\/2020","PTDC\/CTM-TM\/30326\/2017","IF\/01016\/2014","IF\/00355\/2012"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Processes"],"abstract":"<jats:p>Composite sorbent materials (IL@MOF) with a metal-organic framework (MOF) ZIF-8 and [B(CN)4]\u2212-based ionic liquids (ILs) were produced for the first time. Characterization results indicate the successful IL impregnation and conservation of the ZIF-8 crystalline structure and morphology. The data collected from the nitrogen (N2) physisorption at 77 K suggest that these IL@ZIF-8 materials are nonporous as their textural properties, such as BET specific surface area and total pore volume, are negligible. However, CO2, CH4, and N2 adsorption\/desorption measurements in the IL@ZIF-8 composites at 303 and 273 K contradict the N2 data at 77 K, given that the obtained isotherms are Type I, typical of (micro)porous materials. Their gas adsorption capacity and ultramicroporous volume are in the same order of magnitude as the pristine microporous ZIF-8. The case study [C6MIM][B(CN)4] IL revealed a high affinity to both CO2 and CH4. This compromised the selectivity performance of its respective composite when compared with pristine ZIF-8. This work highlights the importance of accurate experimental gas adsorption\/desorption equilibrium measurements to characterize the adsorption uptake and the porous nature of adsorbent materials.<\/jats:p>","DOI":"10.3390\/pr10020247","type":"journal-article","created":{"date-parts":[[2022,1,27]],"date-time":"2022-01-27T22:00:56Z","timestamp":1643320856000},"page":"247","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Unveiling the Temperature Influence on the Sorptive Behaviour of ZIF-8 Composite Materials Impregnated with [CnMIM][B(CN)4] Ionic Liquids"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7488-502X","authenticated-orcid":false,"given":"Tiago J.","family":"Ferreira","sequence":"first","affiliation":[{"name":"LAQV\/REQUIMTE, Departamento de Qu\u00edmica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Almada, Portugal"}]},{"given":"Laura M.","family":"Esteves","sequence":"additional","affiliation":[{"name":"LAQV\/REQUIMTE, Departamento de Qu\u00edmica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Almada, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9615-8678","authenticated-orcid":false,"given":"Jos\u00e9 M. S. S.","family":"Esperan\u00e7a","sequence":"additional","affiliation":[{"name":"LAQV\/REQUIMTE, Departamento de Qu\u00edmica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Almada, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2242-6016","authenticated-orcid":false,"given":"Isabel A. A. C.","family":"Esteves","sequence":"additional","affiliation":[{"name":"LAQV\/REQUIMTE, Departamento de Qu\u00edmica, Faculdade de Ci\u00eancias e Tecnologia, Universidade NOVA de Lisboa, 2829-516 Almada, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,1,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1704","DOI":"10.1073\/pnas.0812721106","article-title":"Irreversible climate change due to carbon dioxide emissions","volume":"106","author":"Solomon","year":"2009","journal-title":"Proc. Natl. Acad. Sci. USA"},{"key":"ref_2","unstructured":"IPCC (2013). Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, IPCC."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Sifat, N.S., and Haseli, Y. (2019). A critical review of CO2 capture technologies and prospects for clean power generation. Energies, 12.","DOI":"10.3390\/en12214143"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1016\/j.esr.2018.08.003","article-title":"An assessment of CCS costs, barriers and potential","volume":"22","author":"Budinis","year":"2018","journal-title":"Energy Strateg. Rev."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"502","DOI":"10.1016\/j.rser.2018.07.004","article-title":"A systematic review on CO2 capture with ionic liquids: Current status and future prospects","volume":"96","author":"Aghaie","year":"2018","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"101297","DOI":"10.1016\/j.jcou.2020.101297","article-title":"MOFs in carbon capture-past, present and future","volume":"42","author":"Aniruddha","year":"2020","journal-title":"J. CO2 Util."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"77","DOI":"10.3389\/fenrg.2019.00077","article-title":"Covalent Organic Frameworks for the Capture, Fixation, or Reduction of CO2","volume":"7","author":"Ozdemir","year":"2019","journal-title":"Front. Energy Res."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"eaax9171","DOI":"10.1126\/sciadv.aax9171","article-title":"Trace CO2 capture by an ultramicroporous physisorbent with low water affinity","volume":"5","author":"Mukherjee","year":"2019","journal-title":"Sci. Adv."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1016\/j.mattod.2014.03.002","article-title":"Composites of metal-organic frameworks: Preparation and application in adsorption","volume":"17","author":"Ahmed","year":"2014","journal-title":"Mater. Today"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"189","DOI":"10.1016\/j.ccr.2017.04.008","article-title":"Recent advances in the synthesis and applications of metal organic frameworks doped with ionic liquids for CO2 adsorption","volume":"351","author":"Cota","year":"2017","journal-title":"Coord. Chem. Rev."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"10113","DOI":"10.1021\/jacs.8b05802","article-title":"Core\u2212Shell Type Ionic Liquid\/Metal Organic Framework Composite: An Exceptionally High CO2\/CH4 Selectivity","volume":"140","author":"Zeeshan","year":"2018","journal-title":"J. Am. Chem. Soc."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"817","DOI":"10.1016\/j.cej.2017.10.104","article-title":"Incorporation of acetate-based ionic liquids into a zeolitic imidazolate framework (ZIF-8) as efficient sorbents for carbon dioxide capture","volume":"334","author":"Mohamedali","year":"2018","journal-title":"Chem. Eng. J."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"7933","DOI":"10.1021\/acsanm.9b01936","article-title":"Ionic Liquid-Impregnated Metal-Organic Frameworks for CO2\/CH4 Separation","volume":"2","author":"Ferreira","year":"2019","journal-title":"ACS Appl. Nano Mater."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"239","DOI":"10.1016\/j.cherd.2021.03.014","article-title":"Design of absorption process for CO2 capture using cyano based anion ionic liquid","volume":"169","author":"Amiri","year":"2021","journal-title":"Chem. Eng. Res. Des."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"14757","DOI":"10.1039\/C6CP01896C","article-title":"Dispelling some myths about the CO2 solubility in ionic liquids","volume":"18","author":"Carvalho","year":"2016","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1016\/j.supflu.2016.03.011","article-title":"Volumetric and phase behaviour of mixtures of tetracyanoborate-based ionic liquids with high pressure carbon dioxide","volume":"113","author":"Zakrzewska","year":"2016","journal-title":"J. Supercrit. Fluids"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1016\/j.cep.2010.03.008","article-title":"Ionic liquids for CO2 capture-Development and progress","volume":"49","author":"Siaj","year":"2010","journal-title":"Chem. Eng. Process. Process Intensif."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Do, D.D. (1998). Adsorption Analysis: Equilibria and Kinetics, Imperial College Press.","DOI":"10.1142\/9781860943829"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"1051","DOI":"10.1515\/pac-2014-1117","article-title":"Physisorption of gases, with special reference to the evaluation of surface area and pore size distribution (IUPAC Technical Report)","volume":"87","author":"Thommes","year":"2015","journal-title":"Pure Appl. Chem."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1233","DOI":"10.1016\/j.carbon.2004.01.037","article-title":"Usefulness of CO2 adsorption at 273 K for the characterization of porous carbons","volume":"42","year":"2004","journal-title":"Carbon N. Y."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1765","DOI":"10.1039\/c0ee00784f","article-title":"Sustainable porous carbons with a superior performance for CO2 capture","volume":"4","author":"Sevilla","year":"2011","journal-title":"Energy Environ. Sci."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1016\/j.seppur.2008.01.027","article-title":"Adsorption of natural gas and biogas components on activated carbon","volume":"62","author":"Esteves","year":"2008","journal-title":"Sep. Purif. Technol."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1016\/j.seppur.2014.11.040","article-title":"Adsorption equilibrium of carbon dioxide and nitrogen on the MIL-53 (Al) metal organic framework","volume":"141","author":"Camacho","year":"2015","journal-title":"Sep. Purif. Technol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"590191","DOI":"10.3389\/fchem.2020.590191","article-title":"Paramagnetic Ionic Liquid\/Metal Organic Framework Composites for CO2\/CH4 and CO2\/N2 Separations","volume":"8","author":"Ferreira","year":"2020","journal-title":"Front. Chem."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"17013","DOI":"10.1021\/la102186q","article-title":"Net Adsorption: A Thermodynamic Framework for Supercritical Gas Adsorption and Storage in Porous Solids","volume":"26","author":"Gumma","year":"2010","journal-title":"Langmuir"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"109351","DOI":"10.1016\/j.jenvman.2019.109351","article-title":"Biomethane Production Through Anaerobic Co-Digestion with Maize Cob Waste Based on a Biorefinery Concept: A Review","volume":"249","author":"Surra","year":"2019","journal-title":"J. Environ. Manag."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"253","DOI":"10.1038\/s41586-019-1798-7","article-title":"Data-driven design of metal\u2013organic frameworks for wet flue gas CO2 capture","volume":"576","author":"Boyd","year":"2019","journal-title":"Nature"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1016\/j.memsci.2015.02.020","article-title":"Novel pyrrolidinium-based polymeric ionic liquids with cyano counter-anions: High performance membrane materials for post-combustion CO2 separation","volume":"483","author":"Isik","year":"2015","journal-title":"J. Memb. Sci."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"2732","DOI":"10.1002\/cphc.201700463","article-title":"Molecular Mechanism of Swing Effect in ZeoliticImidazolate Framework ZIF-8: C ontinuous Deformation upon Adsorption","volume":"18","author":"Coudert","year":"2017","journal-title":"ChemPhysChem"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"8900","DOI":"10.1021\/ja202154j","article-title":"Opening the Gate: Framework Flexibility in ZIF-8 Explored by Experiments and Simulations","volume":"133","author":"Moggach","year":"2011","journal-title":"J. Am. Chem. Soc."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"12085","DOI":"10.1002\/ange.201805495","article-title":"Porous Ionic Liquids or Liquid Metal-Organic Frameworks?","volume":"130","author":"Pison","year":"2018","journal-title":"Angew. Chem."}],"container-title":["Processes"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2227-9717\/10\/2\/247\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T22:08:52Z","timestamp":1760134132000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2227-9717\/10\/2\/247"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,1,27]]},"references-count":31,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2022,2]]}},"alternative-id":["pr10020247"],"URL":"https:\/\/doi.org\/10.3390\/pr10020247","relation":{},"ISSN":["2227-9717"],"issn-type":[{"type":"electronic","value":"2227-9717"}],"subject":[],"published":{"date-parts":[[2022,1,27]]}}}