{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,16]],"date-time":"2026-04-16T10:49:26Z","timestamp":1776336566910,"version":"3.51.2"},"reference-count":83,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T00:00:00Z","timestamp":1715212800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"LAQV\/REQUIMTE","award":["UIDP\/50006\/2020 DOI 10.54499\/UIDP\/50006\/2020"],"award-info":[{"award-number":["UIDP\/50006\/2020 DOI 10.54499\/UIDP\/50006\/2020"]}]},{"name":"LAQV\/REQUIMTE","award":["LA\/P\/0008\/2020 DOI 10.54499\/LA\/P\/0008\/2020"],"award-info":[{"award-number":["LA\/P\/0008\/2020 DOI 10.54499\/LA\/P\/0008\/2020"]}]},{"name":"LAQV\/REQUIMTE","award":["UIDB\/50006\/2020 DOI 10.54499\/UIDB\/50006\/2020"],"award-info":[{"award-number":["UIDB\/50006\/2020 DOI 10.54499\/UIDB\/50006\/2020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>The valorization of the large amount of crude glycerol formed from the biodiesel industry is of primordial necessity. One possible direction with high interest to the biorefinery sector is the production of fuel additives such as solketal, through the acetalization of glycerol with acetone. This is a chemical process that conciliates high sustainability and economic interest, since solketal contributes to the fulfillment of a Circular Economy Model through its use in biodiesel blends. The key to guarantee high efficiency and high sustainability for solketal production is the use of recovery and recyclable heterogeneous catalysts. Reported works indicate that high yields are attributed to catalyst acidity, mainly the ones containing Br\u00f6nsted acidic sites. On the other hand, the catalyst stability and its recycling capacity are completely dependent of the support material and the acidic sites incorporation methodology. This review intends to conciliate the information spread on this topic and indicate the most assertive strategies to achieve high solketal production in short reaction time during various reaction cycles.<\/jats:p>","DOI":"10.3390\/nano14100828","type":"journal-article","created":{"date-parts":[[2024,5,9]],"date-time":"2024-05-09T03:34:19Z","timestamp":1715225659000},"page":"828","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["The Role of the Heterogeneous Catalyst to Produce Solketal from Biodiesel Waste: The Key to Achieve Efficiency"],"prefix":"10.3390","volume":"14","author":[{"given":"Catarina N.","family":"Dias","sequence":"first","affiliation":[{"name":"LAQV\/REQUIMTE & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4472-5834","authenticated-orcid":false,"given":"Alexandre M.","family":"Viana","sequence":"additional","affiliation":[{"name":"LAQV\/REQUIMTE & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9229-1412","authenticated-orcid":false,"given":"Lu\u00eds","family":"Cunha-Silva","sequence":"additional","affiliation":[{"name":"LAQV\/REQUIMTE & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8984-0473","authenticated-orcid":false,"given":"Salete S.","family":"Balula","sequence":"additional","affiliation":[{"name":"LAQV\/REQUIMTE & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"133479","DOI":"10.1016\/j.jclepro.2022.133479","article-title":"Current trends in biodiesel production technologies and future progressions: A possible displacement of the petro-diesel","volume":"370","author":"Akram","year":"2022","journal-title":"J. Clean. Prod."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"116553","DOI":"10.1016\/j.fuel.2019.116553","article-title":"A review on feedstocks, production processes, and yield for different generations of biodiesel","volume":"262","author":"Singh","year":"2020","journal-title":"Fuel"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"20961","DOI":"10.1021\/acs.iecr.0c04123","article-title":"Production of Fuel Additive Solketal via Catalytic Conversion of Biodiesel-Derived Glycerol","volume":"59","author":"Zahid","year":"2020","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1016\/j.pecs.2006.08.003","article-title":"Biofuels (alcohols and biodiesel) applications as fuels for internal combustion engines","volume":"33","author":"Agarwal","year":"2007","journal-title":"Prog. Energy Combust. Sci."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Ramos, M., Dias, A.P.S., Puna, J.F., Gomes, J., and Bordado, J.C. (2019). Biodiesel Production Processes and Sustainable Raw Materials. Energies, 12.","DOI":"10.3390\/en12234408"},{"key":"ref_6","unstructured":"TEA (2024, February 12). World Energy Outlook 2023, IEA, Paris. Available online: https:\/\/www.iea.org\/reports\/world-energy-outlook-2023."},{"key":"ref_7","unstructured":"Energy Institute (2023). Statistical Review of World Energy, Energy Institute. [7th ed.]."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1774","DOI":"10.1002\/ceat.201900624","article-title":"Desulfurization and Denitrogenation Processes to Treat Diesel Using Mo(VI)-Bipyridine Catalysts","volume":"43","author":"Gomes","year":"2020","journal-title":"Chem. Eng. Technol."},{"key":"ref_9","unstructured":"Comission, E. (2023, January 22). A European Green Deal: Striving to be the First Climate-Neutral Continent. Available online: https:\/\/commission.europa.eu\/strategy-and-policy\/priorities-2019-2024\/european-green-deal_en."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"286","DOI":"10.3390\/suschem2020017","article-title":"Continuous Valorization of Glycerol into Solketal: Recent Advances on Catalysts, Processes, and Industrial Perspectives","volume":"2","author":"Faria","year":"2021","journal-title":"Sustain. Chem."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1400","DOI":"10.1016\/j.rser.2017.04.005","article-title":"Oxygenated fuel additives from glycerol valorization. Main production pathways and effects on fuel properties and engine performance: A critical review","volume":"79","author":"Cornejo","year":"2017","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"573","DOI":"10.3389\/fchem.2018.00573","article-title":"A Review on the Catalytic Acetalization of Bio-renewable Glycerol to Fuel Additives","volume":"6","author":"Amin","year":"2018","journal-title":"Front. Chem."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"109","DOI":"10.1016\/j.rser.2018.02.019","article-title":"Glycerol from biodiesel production: Technological paths for sustainability","volume":"88","author":"Monteiro","year":"2018","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Yang, F., Hana, M.A., and Sun, R. (2012). Value-added uses for crude glycerol\u2014A byproduct of biodiesel production. Biotechnol. Biofuels, 5.","DOI":"10.1186\/1754-6834-5-13"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Costa, A.A.F.d., de Oliveira, A.N., Esposito, R., Len, C., Luque, R., Noronha, R.C.R., Rocha Filho, G.N.d., and Nascimento, L.A.S.d. (2022). Glycerol and Catalysis by Waste\/Low-Cost Materials\u2014A Review. Catalysts, 12.","DOI":"10.3390\/catal12050570"},{"key":"ref_16","unstructured":"OECD, Food, and Agriculture Organization of the United Nations (2023). Biodiesel Projections: Production and Use, OECD."},{"key":"ref_17","first-page":"12","article-title":"The use and future of biofuels","volume":"3","author":"Aydogan","year":"2014","journal-title":"Int. J. Soc. Sci."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"3547","DOI":"10.1016\/j.biombioe.2011.05.004","article-title":"The influence of impurities on the acid-catalyzed reaction of glycerol with acetone","volume":"35","author":"Mota","year":"2011","journal-title":"Biomass Bioenergy"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"595","DOI":"10.3390\/catal8120595","article-title":"Acetalization Catalysts for Synthesis of Valuable Oxygenated Fuel Additives from Glycerol","volume":"8","author":"Smirnov","year":"2018","journal-title":"Catalysts"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"2872","DOI":"10.3390\/en12152872","article-title":"Glycerol to Solketal for Fuel Additive: Recent Progress in Heterogeneous Catalysts","volume":"12","author":"Fatimah","year":"2019","journal-title":"Energies"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"129352","DOI":"10.1016\/j.fuel.2023.129352","article-title":"Synthesis of oxygenated additive fuels from bio-renewable glycerol using sulfated Zr-Al based heterogeneous acid catalyst","volume":"355","author":"Maurya","year":"2024","journal-title":"Fuels"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/j.apcatb.2016.04.013","article-title":"Glycerol hydrogenolysis into useful C3 chemicals","volume":"193","author":"Sun","year":"2016","journal-title":"Appl. Catal. B Environ."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"4434","DOI":"10.1002\/anie.200604694","article-title":"From glycerol to value-added products","volume":"46","author":"Pagliaro","year":"2007","journal-title":"Angew. Chem. Int. Ed. Engl."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1039\/c0cy00054j","article-title":"Heterogeneous catalysis of the glycerol hydrogenolysis","volume":"1","author":"Nakagawa","year":"2011","journal-title":"Catal. Sci. Technol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"359","DOI":"10.1039\/b407378a","article-title":"Glycerol hydrogenolysis on heterogeneous catalysts","volume":"6","author":"Chaminand","year":"2004","journal-title":"Green Chem."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1960","DOI":"10.1039\/c1gc15320j","article-title":"Selective catalytic oxidation of glycerol: Perspectives for high value chemicals","volume":"13","author":"Katryniok","year":"2011","journal-title":"Green Chem."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1329","DOI":"10.1039\/b212047j","article-title":"Oxidation of glycerol using supported Pt, Pd and Au catalysts","volume":"5","author":"Carrettin","year":"2003","journal-title":"Phys. Chem. Chem. Phys."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"203","DOI":"10.1016\/j.cattod.2005.02.003","article-title":"Selective oxidation of glycerol with oxygen using mono and bimetallic catalysts based on Au, Pd and Pt metals","volume":"102\u2013103","author":"Bianchi","year":"2005","journal-title":"Catal. Today"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"6301","DOI":"10.1021\/acscatal.8b01317","article-title":"Recent Advances in Thermo-, Photo-, and Electrocatalytic Glycerol Oxidation","volume":"8","author":"Dodekatos","year":"2018","journal-title":"ACS Catal."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"2079","DOI":"10.1039\/c0gc00307g","article-title":"Glycerol dehydration to acrolein in the context of new uses of glycerol","volume":"12","author":"Katryniok","year":"2010","journal-title":"Green Chem."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1016\/j.rser.2014.07.168","article-title":"Glycerol for renewable acrolein production by catalytic dehydration","volume":"40","author":"Amin","year":"2014","journal-title":"Renew. Sustain. Energy Rev."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1487","DOI":"10.3390\/catal12111487","article-title":"Critical Review of the Various Reaction Mechanisms for Glycerol Etherification","volume":"12","author":"Palanychamy","year":"2022","journal-title":"Catalysts"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1016\/j.apcata.2009.07.037","article-title":"Catalytic etherification of glycerol by tert-butyl alcohol to produce oxygenated additives for diesel fuel","volume":"367","author":"Frusteri","year":"2009","journal-title":"Appl. Catal. A Gen."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1016\/S0926-860X(01)00920-6","article-title":"Selective etherification of glycerol to polyglycerols over impregnated basic MCM-41 type mesoporous catalysts","volume":"227","author":"Clacens","year":"2002","journal-title":"Appl. Catal. A Gen."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1039\/B707343G","article-title":"Chemoselective catalytic conversion of glycerol as a biorenewable source to valuable commodity chemicals","volume":"37","author":"Zhou","year":"2008","journal-title":"Chem. Soc. Rev."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1039\/D3IM00050H","article-title":"Acetalization strategy in biomass valorization: A review","volume":"2","author":"He","year":"2024","journal-title":"Ind. Chem. Mater."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"504","DOI":"10.1016\/j.applthermaleng.2017.06.064","article-title":"Performance and emission characteristics of solketal-gasoline fuel blend in a vehicle with spark ignition engine","volume":"124","author":"Alptekin","year":"2017","journal-title":"Appl. Therm. Eng."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/j.molliq.2018.04.133","article-title":"Thermodynamic insights on the viscometric and volumetric properties of binary mixtures of ketals and polyols","volume":"263","author":"Esteban","year":"2018","journal-title":"J. Mol. Liq."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"540","DOI":"10.1016\/j.renene.2022.03.125","article-title":"Economic feasibility of a solketal production process from glycerol at small industrial scale","volume":"190","author":"Vannucci","year":"2022","journal-title":"Renew. Energy"},{"key":"ref_40","doi-asserted-by":"crossref","unstructured":"Mirante, F., Leo, P., Dias, C.N., Cunha-Silva, L., and Balula, S.S. (2023). MOF-808 as an Efficient Catalyst for Valorization of Biodiesel Waste Production: Glycerol Acetalization. Materials, 16.","DOI":"10.20944\/preprints202310.0644.v1"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"291","DOI":"10.1016\/j.cej.2011.10.004","article-title":"Valorization of glycerol into fuel additives over zeolites as catalysts","volume":"178","author":"Serafim","year":"2011","journal-title":"Chem. Eng. J."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"2524","DOI":"10.1021\/cs300562e","article-title":"Solvent-Free Methods for Making Acetals Derived from Glycerol and Furfural and Their Use as a Biodiesel Fuel Component","volume":"2","author":"Wegenhart","year":"2012","journal-title":"ACS Catal."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"81","DOI":"10.3390\/catal12010081","article-title":"Acetalization of Glycerol with Citral over Heteropolyacids Immobilized on KIT-6","volume":"12","author":"Castanheiro","year":"2022","journal-title":"Catalysts"},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"e06018","DOI":"10.1016\/j.heliyon.2021.e06018","article-title":"Acetalization of glycerol and benzaldehyde to synthesize biofuel additives using SO42\u2212\/CeO2-ZrO2 catalyst","volume":"7","author":"Kulkarni","year":"2021","journal-title":"Heliyon"},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"207","DOI":"10.1016\/j.apcata.2017.09.027","article-title":"Glycerol acetalization with formaldehyde using heteropolyacid salts supported on mesostructured silica","volume":"549","author":"Chen","year":"2018","journal-title":"Appl. Catal. A Gen."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"6573","DOI":"10.3390\/molecules27196573","article-title":"Easy and Fast Production of Solketal from Glycerol Acetalization via Heteropolyacids","volume":"27","author":"Juliao","year":"2022","journal-title":"Molecules"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"478","DOI":"10.1039\/C2GC36152C","article-title":"Design of highly efficient Mo and W-promoted SnO2 solid acids for heterogeneous catalysis: Acetalization of bio-glycerol","volume":"15","author":"Mallesham","year":"2013","journal-title":"Green Chem."},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1016\/j.jiec.2022.03.008","article-title":"Acetalization of glycerol over sulfated UiO-66 under mild condition","volume":"110","author":"Jiang","year":"2022","journal-title":"J. Ind. Eng. Chem."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"1396","DOI":"10.1016\/j.cej.2016.11.053","article-title":"Conversion enhancement for acetalization using a catalytically active membrane in a pervaporation membrane reactor","volume":"313","author":"Qing","year":"2017","journal-title":"Chem. Eng. J."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1016\/j.molcata.2009.06.010","article-title":"Acetalization of glycerol using mesoporous MoO3\/SiO2 solid acid catalyst","volume":"310","author":"Umbarkar","year":"2009","journal-title":"J. Mol. Catal. A Chem."},{"key":"ref_51","doi-asserted-by":"crossref","first-page":"206","DOI":"10.1016\/j.fuproc.2014.03.007","article-title":"Optimization of glycerol ketalization to produce solketal as biodiesel additive in a continuous reactor with subcritical acetone using Purolite\u00ae PD206 as catalyst","volume":"124","author":"Shirani","year":"2014","journal-title":"Fuel Process. Technol."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/j.apcata.2016.11.006","article-title":"Isostructural metal-carboxylates MIL-100(M) and MIL-53(M) (M: V, Al, Fe and Cr) as catalysts for condensation of glycerol with acetone","volume":"529","author":"Timofeeva","year":"2017","journal-title":"Appl. Catal. A Gen."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"44499","DOI":"10.1039\/C4RA17090C","article-title":"Solvent-free heteropolyacid-catalyzed glycerol ketalization at room temperature","volume":"5","author":"Julio","year":"2015","journal-title":"RSC Adv."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1016\/j.apcata.2013.05.035","article-title":"Solventless acetalization of glycerol with acetone to fuel oxygenates over Ni\u2013Zr supported on mesoporous activated carbon catalyst","volume":"464\u2013465","author":"Khayoon","year":"2013","journal-title":"Appl. Catal. A Gen."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1016\/j.molcata.2015.09.006","article-title":"Acetalization of glycerol with acetone to bio fuel additives over supported molybdenum phosphate catalysts","volume":"410","author":"Gadamsetti","year":"2015","journal-title":"J. Mol. Catal. A Chem."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"118724","DOI":"10.1016\/j.fuel.2020.118724","article-title":"An efficient process to synthesize solketal from glycerol over tin (II) silicotungstate catalyst","volume":"281","author":"Teixeira","year":"2020","journal-title":"Fuel"},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1007\/s13203-018-0197-6","article-title":"Acetalization of glycerol with acetone over various metal-modified SBA-15 catalysts","volume":"8","author":"Ammaji","year":"2018","journal-title":"Appl. Petrochem. Res."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"1918","DOI":"10.1002\/cctc.201701656","article-title":"Highly Efficient Glycerol Acetalization over Supported Heteropoly Acid Catalysts","volume":"10","author":"Chen","year":"2018","journal-title":"ChemCatChem"},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1016\/j.molcata.2014.09.028","article-title":"Room temperature synthesis of solketal from acetalization of glycerol with acetone: Effect of crystallite size and the role of acidity of beta zeolite","volume":"396","author":"Manjunathan","year":"2015","journal-title":"J. Mol. Catal. A Chem."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"114296","DOI":"10.1016\/j.cattod.2023.114296","article-title":"Acetalization of glycerol with acetone over UAV-59 catalyst: Mild reaction conditions and enhanced selectivity","volume":"424","author":"Mendes","year":"2023","journal-title":"Catal. Today"},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"843","DOI":"10.1039\/C8DT03512A","article-title":"Exploring the Bronsted acidity of UiO-66 (Zr, Ce, Hf) metal-organic frameworks for efficient solketal synthesis from glycerol acetalization","volume":"48","author":"Bakuru","year":"2019","journal-title":"Dalton Trans."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1016\/j.cattod.2019.04.048","article-title":"Glycerol conversion into biofuel additives by acetalization with pentanal over heteropolyacids immobilized on zeolites","volume":"346","author":"Castanheiro","year":"2020","journal-title":"Catal. Today"},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"301","DOI":"10.1039\/B918763B","article-title":"Green chemistry: Principles and practice","volume":"39","author":"Anastas","year":"2010","journal-title":"Chem. Soc. Rev."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1021\/cr960400y","article-title":"Catalysis by Heteropoly Acids and Multicomponent Polyoxometalates in Liquid-Phase Reactions","volume":"98","author":"Kozhevnikov","year":"1998","journal-title":"Chem. Rev."},{"key":"ref_65","doi-asserted-by":"crossref","first-page":"7702","DOI":"10.1021\/ja9639123","article-title":"An Acidity Scale for Br\u00f6nsted Acids Including H3PW12O40","volume":"119","author":"Drago","year":"1997","journal-title":"J. Am. Chem. Soc."},{"key":"ref_66","doi-asserted-by":"crossref","first-page":"4893","DOI":"10.1021\/cr500390v","article-title":"Recent advances in polyoxometalate-catalyzed reactions","volume":"115","author":"Wang","year":"2015","journal-title":"Chem. Rev."},{"key":"ref_67","doi-asserted-by":"crossref","first-page":"485","DOI":"10.1021\/prechem.3c00017","article-title":"Heteropoly Ionic Liquid Functionalized MOF-Fe: Synthesis, Characterization, and Catalytic Application in Selective Acetalization of Glycerol to Solketal as a Fuel Additive at Room Temperature, Solvent-Free Conditions","volume":"1","author":"Ali","year":"2023","journal-title":"Precis. Chem."},{"key":"ref_68","doi-asserted-by":"crossref","first-page":"354","DOI":"10.1016\/j.jiec.2021.12.007","article-title":"Glycerol acetalization over highly ordered mesoporous molybdenum dioxide: Excellent catalytic performance, recyclability and water-tolerance","volume":"107","author":"Hong","year":"2022","journal-title":"J. Ind. Eng. Chem."},{"key":"ref_69","doi-asserted-by":"crossref","first-page":"803","DOI":"10.1039\/c3cy00825h","article-title":"Eco-friendly synthesis of bio-additive fuels from renewable glycerol using nanocrystalline SnO2-based solid acids","volume":"4","author":"Mallesham","year":"2014","journal-title":"Catal. Sci. Technol."},{"key":"ref_70","doi-asserted-by":"crossref","first-page":"113682","DOI":"10.1016\/j.mcat.2023.113682","article-title":"One-pot synthesis of MoO3-ZrO2 solid acid catalyst for solvent-free solketal production from glycerol","volume":"552","author":"Huang","year":"2024","journal-title":"Mol. Catal."},{"key":"ref_71","doi-asserted-by":"crossref","first-page":"899","DOI":"10.1039\/b923681c","article-title":"Acetalisation of bio-glycerol with acetone to produce solketal over sulfonic mesostructured silicas","volume":"12","author":"Vicente","year":"2010","journal-title":"Green Chem."},{"key":"ref_72","doi-asserted-by":"crossref","first-page":"120207","DOI":"10.1016\/j.fuel.2021.120207","article-title":"Synthesis of solketal from glycerol over modified SiO2 supported p-phenolsulfonic acid catalyst","volume":"291","author":"Zhou","year":"2021","journal-title":"Fuel"},{"key":"ref_73","doi-asserted-by":"crossref","first-page":"112830","DOI":"10.1016\/j.micromeso.2023.112830","article-title":"Influence of sulphonation on Al-MCM-41 catalyst for effective bio-glycerol conversion to Solketal","volume":"363","author":"Matkala","year":"2024","journal-title":"Microporous Mesoporous Mater."},{"key":"ref_74","doi-asserted-by":"crossref","first-page":"1134","DOI":"10.1021\/acs.inorgchem.5b02312","article-title":"Modulated Hydrothermal Synthesis of UiO-66(Hf)-Type Metal-Organic Frameworks for Optimal Carbon Dioxide Separation","volume":"55","author":"Hu","year":"2016","journal-title":"Inorg. Chem."},{"key":"ref_75","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1007\/s12039-022-02103-8","article-title":"Improvement of the acidic properties of MOF by doped SnO2 quantum dots for the production of solketal","volume":"134","author":"Dashtipour","year":"2022","journal-title":"J. Chem. Sci."},{"key":"ref_76","doi-asserted-by":"crossref","first-page":"598","DOI":"10.3390\/catal11050598","article-title":"Solketal Production via Solvent-Free Acetalization of Glycerol over Triphosphonic-Lanthanide Coordination Polymers","volume":"11","author":"Mendes","year":"2021","journal-title":"Catalysts"},{"key":"ref_77","first-page":"1928","article-title":"Synthesis of Bio-fuel Additives From Glycerol Over Poly(Vinyl Alcohol) With Sulfonic Acid Groups","volume":"37","author":"Lopes","year":"2015","journal-title":"Energy Sources Part A Recovery Util. Environ. Eff."},{"key":"ref_78","doi-asserted-by":"crossref","first-page":"182","DOI":"10.1016\/j.micromeso.2013.06.004","article-title":"Acid functionalized carbon\u2013silica composite and its application for solketal production","volume":"179","author":"Nandan","year":"2013","journal-title":"Microporous Mesoporous Mater."},{"key":"ref_79","doi-asserted-by":"crossref","unstructured":"Dom\u00ednguez-Barroso, V., Herrera, C., Larrubia, M.\u00c1., Gonz\u00e1lez-Gil, R., Cort\u00e9s-Reyes, M., and Alemany, L.J. (2019). Continuous-Flow Process for Glycerol Conversion to Solketal Using a Br\u00f6nsted Acid Functionalized Carbon-Based Catalyst. Catalysts, 9.","DOI":"10.3390\/catal9070609"},{"key":"ref_80","doi-asserted-by":"crossref","first-page":"1172","DOI":"10.1021\/acssuschemeng.1c06330","article-title":"Sustainable Upgrade of Bioderived Glycerol to Solketal through Acetalization over Metal-Free Mordenite Catalysts","volume":"10","author":"Saini","year":"2022","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_81","doi-asserted-by":"crossref","first-page":"17746","DOI":"10.1021\/acs.iecr.9b03725","article-title":"Solketal Production from Glycerol Ketalization with Acetone: Catalyst Selection and Thermodynamic and Kinetic Reaction Study","volume":"58","author":"Moreira","year":"2019","journal-title":"Ind. Eng. Chem. Res."},{"key":"ref_82","doi-asserted-by":"crossref","first-page":"377","DOI":"10.1016\/j.fuel.2018.06.081","article-title":"One-pot synthesis of ZrMo-KIT-6 solid acid catalyst for solvent-free conversion of glycerol to solketal","volume":"233","author":"Li","year":"2018","journal-title":"Fuel"},{"key":"ref_83","doi-asserted-by":"crossref","first-page":"117369","DOI":"10.1016\/j.apcata.2019.117369","article-title":"Hydrophobic functionalization of HY zeolites for efficient conversion of glycerol to solketal","volume":"592","author":"Rahaman","year":"2020","journal-title":"Appl. Catal. A Gen."}],"container-title":["Nanomaterials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2079-4991\/14\/10\/828\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T14:42:23Z","timestamp":1760107343000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2079-4991\/14\/10\/828"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,5,9]]},"references-count":83,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2024,5]]}},"alternative-id":["nano14100828"],"URL":"https:\/\/doi.org\/10.3390\/nano14100828","relation":{},"ISSN":["2079-4991"],"issn-type":[{"value":"2079-4991","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,5,9]]}}}