{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T22:25:43Z","timestamp":1792794343622,"version":"4.5.0"},"reference-count":53,"publisher":"American Chemical Society (ACS)","issue":"7","license":[{"start":{"date-parts":[[2025,2,16]],"date-time":"2025-02-16T00:00:00Z","timestamp":1739664000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,2,25]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Eggshell calcination at 900 \u00b0C was used to produce CaO, which was afterward impregnated with K and Sr using KNO3 and SrCl2\u00b76H2O precursors, diluted in methanol, to improve basicity, stability, and catalytic activity. The CaO doping with K\u2013Sr affected the final catalyst\u2019s textural properties, alkalinity, and basic strength due to the K+ and Sr2+ size and incorporation into the CaO lattice. SEM images with elemental mapping showed a uniform K+ and Sr2+ distribution for the K\u2013Sr\/CaO catalyst. However, carbonization modified the basic strength and the number of catalytic sites. The fresh K\u2013Sr\/CaO and CaO catalysts presented 92.5% and 46% biodiesel yields, respectively. In the third reaction cycle, the biodiesel yield dropped to approximately 72% and 21%, respectively. In this sense, the method of doping CaO with K and Sr increased the basic strength and number of basic sites for the K\u2013Sr\/CaO catalyst, providing higher resistance to leaching compared to the CaO catalyst. Finally, the enhanced conditions were 7.0 wt % catalyst loading, a 12.5:1 methanol\/oil molar ratio, 70 \u00b0C, and a 1 h reaction time.<\/jats:p>","DOI":"10.1021\/acsomega.4c09118","type":"journal-article","created":{"date-parts":[[2025,2,16]],"date-time":"2025-02-16T08:51:11Z","timestamp":1739695871000},"page":"6827-6838","source":"Crossref","is-referenced-by-count":33,"title":["Biodiesel Production\nUsing K\u2013Sr\/CaO and CaO\nCatalysts Derived from Eggshells by Canola Oil Transesterification"],"prefix":"10.1021","volume":"10","author":[{"given":"Jesu\u0301s\nAndre\u0301s","family":"Tavizo\u0301n-Pozos","sequence":"first","affiliation":[{"name":"Universidad Auto\u0301noma Metropolitana Azcapotzalco , , Avenue San Pablo No. 420, Nueva el Rosario, Azcapotzalco , ,","place":["Ciudad de Me\u0301xico, Me\u0301xico, 02128"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Humberto","family":"Cervantes-Cuevas","sequence":"additional","affiliation":[{"name":"Universidad Auto\u0301noma Metropolitana Azcapotzalco , , Avenue San Pablo No. 420, Nueva el Rosario, Azcapotzalco , ,","place":["Ciudad de Me\u0301xico, Me\u0301xico, 02128"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Germa\u0301n Gustavo","family":"Garcia-Camacho","sequence":"additional","affiliation":[{"name":"Universidad Auto\u0301noma Metropolitana Azcapotzalco , , Avenue San Pablo No. 420, Nueva el Rosario, Azcapotzalco , ,","place":["Ciudad de Me\u0301xico, Me\u0301xico, 02128"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0083-4043","authenticated-orcid":true,"given":"Gerardo","family":"Chavez-Esquivel","sequence":"additional","affiliation":[{"name":"Universidad Auto\u0301noma Metropolitana Azcapotzalco , , Avenue San Pablo No. 420, Nueva el Rosario, Azcapotzalco , ,","place":["Ciudad de Me\u0301xico, Me\u0301xico, 02128"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dwight Roberto","family":"Acosta-Najarro","sequence":"additional","affiliation":[{"name":"Universidad Nacional Auto\u0301noma de Me\u0301xico, Ciudad Universitaria , , Coyoaca\u0301n , ,","place":["Ciudad de Me\u0301xico, Me\u0301xico, 04510"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2025,2,16]]},"reference":[{"key":"2026081811145655200_cit1","doi-asserted-by":"publisher","first-page":"118273","DOI":"10.1016\/j.enconman.2024.118273","article-title":"Three-dimensional hierarchical meso\/macroporous Mo\/Ce\/TiO2 composites enhances biodiesel production from acidic soybean oil\nby transesterification-esterifiications","volume":"305","author":"Hou","year":"2024","journal-title":"Energy\nConvers. Manage."},{"key":"2026081811145655200_cit2","doi-asserted-by":"publisher","first-page":"675","DOI":"10.1016\/j.renene.2018.03.010","article-title":"Magnetic Fe3O4\/MCM-41 composite-supported\nsodium silicate as heterogeneous catalysts for biodiesel production","volume":"125","author":"Xie","year":"2018","journal-title":"Renewable energy"},{"issue":"1","key":"2026081811145655200_cit3","doi-asserted-by":"publisher","first-page":"1237","DOI":"10.1021\/acssuschemeng.6b02732","article-title":"Structure evolution\nof synthetic amino acids-derived basic ionic\nliquids for catalytic production of biodiesel","volume":"5","author":"Li","year":"2017","journal-title":"ACS Sustainable Chem. Eng."},{"key":"2026081811145655200_cit4","doi-asserted-by":"publisher","first-page":"113","DOI":"10.30492\/ijcce.2013.5911","article-title":"Alkaline Earth Metal\nOxide Catalysts\nfor Biodiesel Production from Palm Oil: Elucidation of Process Behaviors\nand Modeling Using Response Surface Methodology","volume":"32","author":"Salamatinia","year":"2013","journal-title":"Iran. J. Chem. Chem. Eng."},{"key":"2026081811145655200_cit5","doi-asserted-by":"publisher","first-page":"131105","DOI":"10.1016\/j.fuel.2024.131105","article-title":"Enhanced biodiesel\nproduction from low-value acidic oils using ordered\nhierarchical macro\u2013mesoporous MoAl@H-SiO2 catalyst","volume":"364","author":"Li","year":"2024","journal-title":"Fuel"},{"key":"2026081811145655200_cit6","doi-asserted-by":"publisher","first-page":"189","DOI":"10.1016\/S0166-9834(00)80114-1","article-title":"Aldol addition\nof acetone, catalyzed\nby solid base catalysts: magnesium oxide, calcium oxide, strontium\noxide, barium oxide, lanthanum (III) oxide and zirconium oxide","volume":"36","author":"Zhang","year":"1988","journal-title":"Appl. Catal."},{"key":"2026081811145655200_cit7","doi-asserted-by":"publisher","first-page":"91","DOI":"10.1016\/B978-0-12-823958-2.00001-X","article-title":"Chapter 6\ue5f8CaO\nderived from waste shell materials as catalysts in synthesis of biodiesel","volume-title":"Waste and Biodiesel","author":"Moura","year":"2022"},{"key":"2026081811145655200_cit8","doi-asserted-by":"publisher","first-page":"219","DOI":"10.1016\/j.tifs.2019.07.021","article-title":"Eggshell calcium: A cheap alternative\nto expensive supplements","volume":"91","author":"Waheed","year":"2019","journal-title":"Trends Food Sci. Technol."},{"key":"2026081811145655200_cit9","doi-asserted-by":"publisher","first-page":"101317","DOI":"10.1016\/j.bcab.2019.101317","article-title":"Life cycle\nassessment of waste cooking\noil for biodiesel production using waste chicken eggshell derived\nCaO as catalyst via transesterification","volume":"21","author":"Chung","year":"2019","journal-title":"Biocatal.\nAgric. Biotechnol."},{"key":"2026081811145655200_cit10","doi-asserted-by":"publisher","first-page":"115828","DOI":"10.1016\/j.fuel.2019.115828","article-title":"Biodiesel\nproduction via waste eggshell as a low-cost heterogeneous catalyst:\nIts effects on some critical fuel properties and comparison with CaO","volume":"255","author":"Yas\u0327ar","year":"2019","journal-title":"Fuel"},{"issue":"Part\n2","key":"2026081811145655200_cit11","doi-asserted-by":"publisher","first-page":"126166","DOI":"10.1016\/j.fuel.2022.126166","article-title":"Biodiesel\nproduction from Argemone mexicana oil using chicken\neggshell derived CaO catalyst","volume":"332","author":"Ashine","year":"2023","journal-title":"Fuel"},{"key":"2026081811145655200_cit12","doi-asserted-by":"publisher","first-page":"106357","DOI":"10.1016\/j.biombioe.2022.106357","article-title":"Process optimization\nof ultrasonic-assisted biodiesel production from waste cooking oil\nusing waste chicken eggshell-derived CaO as a green heterogeneous\ncatalyst","volume":"158","author":"Attari","year":"2022","journal-title":"Biomass Bioenergy"},{"key":"2026081811145655200_cit13","doi-asserted-by":"publisher","first-page":"644","DOI":"10.1016\/j.cherd.2018.02.002","article-title":"Biodiesel production from date seed\noil (Phoenix dactylifera L.) via egg shell derived\nheterogeneous catalyst","volume":"132","author":"Farooq","year":"2018","journal-title":"Chem. Eng. Res. Des."},{"key":"2026081811145655200_cit14","doi-asserted-by":"publisher","first-page":"279","DOI":"10.1016\/j.psep.2019.03.021","article-title":"Production\nof biodiesel from dairy\nwaste scum using eggshell waste","volume":"125","author":"Kavitha","year":"2019","journal-title":"Process Saf.\nEnviron. Prot."},{"key":"2026081811145655200_cit15","doi-asserted-by":"publisher","first-page":"105654","DOI":"10.1016\/j.jece.2021.105654","article-title":"Biodiesel\nproduction from poultry\nwastes: Waste chicken fat and eggshell","volume":"9","author":"Odetoye","year":"2021","journal-title":"J. Environ.\nChem. Eng."},{"key":"2026081811145655200_cit16","doi-asserted-by":"publisher","first-page":"6708","DOI":"10.1038\/s41598-021-86062-z","article-title":"Improved biodiesel\nproduction from waste cooking oil with mixed methanol-ethanol using\nenhanced eggshell-derived CaO nanocatalyst","volume":"11","author":"Erchamo","year":"2021","journal-title":"Sci. Rep."},{"key":"2026081811145655200_cit17","doi-asserted-by":"publisher","first-page":"6287","DOI":"10.1007\/s11696-022-02305-x","article-title":"Catalytic\nevaluation of Li and K\nsupported on CaO in the transesterification of triolein, triestearin,\nand tributyrin","volume":"76","author":"Olvera","year":"2022","journal-title":"Chem. Pap."},{"key":"2026081811145655200_cit18","doi-asserted-by":"publisher","first-page":"106542","DOI":"10.1016\/j.jece.2021.106542","article-title":"Systematic production of biodiesel\nfuel from palm oil\nover porous K2O@CaO catalyst derived from waste chicken\neggshell via RSM\/kinetic\/thermodynamic studies","volume":"9","author":"Maneechakr","year":"2021","journal-title":"J. Environ. Chem. Eng."},{"key":"2026081811145655200_cit19","doi-asserted-by":"publisher","first-page":"187","DOI":"10.1021\/acs.energyfuels.0c03815","article-title":"Strontium\noxide nanoparticles for biodiesel production: fundamental insights\nand recent progress","volume":"35","author":"Tangy","year":"2021","journal-title":"Energy Fuels"},{"issue":"2","key":"2026081811145655200_cit20","doi-asserted-by":"publisher","first-page":"652","DOI":"10.1002\/bbb.2562","article-title":"A review\nof the use of SrO in catalysts for biodiesel\nproduction","volume":"18","author":"Tavizo\u0301n-Pozos","year":"2024","journal-title":"Biofuels, Bioprod. Biorefin."},{"key":"2026081811145655200_cit21","doi-asserted-by":"publisher","first-page":"100033","DOI":"10.1016\/j.nxmate.2023.100033","article-title":"Canola oil transesterification for\nbiodiesel production using potassium and strontium supported on calcium\noxide catalysts synthesized from oyster shell residues","volume":"1","author":"Herna\u0301ndez-Marti\u0301nez","year":"2023","journal-title":"Next Mater."},{"issue":"6","key":"2026081811145655200_cit22","doi-asserted-by":"publisher","first-page":"689","DOI":"10.1515\/ijcre-2024-0021","article-title":"Effect\nof Sr concentration in SrK\/CaO oyster shell derived catalysts for\nbiodiesel production","volume":"22","author":"Rami\u0301rez-Paredes","year":"2024","journal-title":"Int. J. Chem. React. Eng."},{"key":"2026081811145655200_cit23","doi-asserted-by":"publisher","first-page":"2267","DOI":"10.1016\/j.fuel.2010.01.028","article-title":"Preparation\nof KF\/CaO nanocatalyst and its application in biodiesel production\nfrom Chinese tallow seed oil","volume":"89","author":"Wen","year":"2010","journal-title":"Fuel"},{"key":"2026081811145655200_cit24","doi-asserted-by":"publisher","first-page":"30","DOI":"10.4236\/jsbs.2020.101003","article-title":"Comparative\nEvaluation of Thermogravimetric\nand Refractive Index Techniques in Determining Biodiesel Yield","volume":"10","author":"Li","year":"2020","journal-title":"J. Sustainable Bioenergy Syst."},{"key":"2026081811145655200_cit25","doi-asserted-by":"publisher","first-page":"760","DOI":"10.1016\/j.cej.2018.07.164","article-title":"Analysis of\ntextural properties of CaO-based CO2 sorbents by ex situ\nUSAXS","volume":"355","author":"Benedetti","year":"2019","journal-title":"Chem. Eng. J."},{"key":"2026081811145655200_cit26","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1186\/2251-6832-3-33","article-title":"Calcium oxide\nfrom\nPomacea sp. shell as a catalyst for biodiesel production","volume":"3","author":"Margaretha","year":"2012","journal-title":"Int. J. Energy Environ. Eng."},{"key":"2026081811145655200_cit27","doi-asserted-by":"publisher","first-page":"216","DOI":"10.1016\/j.fuel.2007.04.013","article-title":"Transesterification\nof soybean oil to biodiesel using CaO as a solid base catalyst","volume":"87","author":"Liu","year":"2008","journal-title":"Fuel"},{"key":"2026081811145655200_cit28","doi-asserted-by":"publisher","DOI":"10.1016\/j.heliyon.2020.e05283","article-title":"Modification\nand characterization\nof chicken eggshell for possible catalytic applications","volume":"6","author":"Awogbemi","year":"2020","journal-title":"Heliyon"},{"key":"2026081811145655200_cit29","doi-asserted-by":"crossref","first-page":"333","DOI":"10.4028\/www.scientific.net\/AMR.55-57.333","article-title":"Temperature Effect\non Chicken Egg Shell Investigated by XRD, TGA and FTIR","volume":"55\u201357","author":"Naemchan","year":"2008","journal-title":"Adv. Mater. Res."},{"key":"2026081811145655200_cit30","volume-title":"New Solid Acids and Bases","author":"Tanabe","year":"1990","edition":"1"},{"key":"2026081811145655200_cit31","doi-asserted-by":"publisher","first-page":"1258","DOI":"10.1016\/j.renene.2022.09.075","article-title":"Role of oxygen\nvacancy on activity of Fe-doped SrTiO3 perovskite bifunctional\ncatalysts for biodiesel production","volume":"199","author":"Li","year":"2022","journal-title":"Renewable\nEnergy"},{"key":"2026081811145655200_cit32","doi-asserted-by":"publisher","first-page":"10864","DOI":"10.1002\/chem.200900487","article-title":"Theoretical\nStudy on the Role of\nSurface Basicity and Lewis Acidity on the Etherification of Glycerol\nover Alkaline Earth Metal Oxides","volume":"15","author":"Calatayud","year":"2009","journal-title":"Chem.\ue5f8Eur.\nJ."},{"key":"2026081811145655200_cit33","doi-asserted-by":"publisher","first-page":"35679","DOI":"10.1021\/acsomega.1c05582","article-title":"Triglyceride\nconversion of waste\nfrying oil up to 98.46% using low concentration K+\/CaO\ncatalysts derived from eggshells","volume":"6","author":"Hossain","year":"2021","journal-title":"ACS Omega"},{"key":"2026081811145655200_cit34","doi-asserted-by":"publisher","first-page":"123549","DOI":"10.1016\/j.cej.2019.123549","article-title":"A novel magnetic\nCaO-based\ncatalyst synthesis and characterization: enhancing the catalytic activity\nand stability of CaO for biodiesel production","volume":"391","author":"Li","year":"2020","journal-title":"Chem. Eng. J."},{"key":"2026081811145655200_cit35","doi-asserted-by":"publisher","first-page":"311","DOI":"10.1016\/j.jcrysgro.2016.09.051","article-title":"Growth and\ncomparison of single crystals and polycrystalline brownmillerite Ca2Fe2O5","volume":"468","author":"Dhankhar","year":"2017","journal-title":"J. Cryst.\nGrowth"},{"key":"2026081811145655200_cit36","doi-asserted-by":"publisher","first-page":"32922","DOI":"10.1039\/C8RA06884D","article-title":"The activity\nand stability of CeO2@CaO catalysts\nfor the production of biodiesel","volume":"8","author":"Zhang","year":"2018","journal-title":"RSC Adv."},{"key":"2026081811145655200_cit37","doi-asserted-by":"publisher","first-page":"4198","DOI":"10.1021\/acsnano.7b01152","article-title":"Microwave\u2013assisted\nmorphology evolution of Fe\u2013based metal\u2013organic frameworks\nand their derived Fe2O3 nanostructures for Li\u2013ion\nstorage","volume":"11","author":"Guo","year":"2017","journal-title":"ACS Nano"},{"key":"2026081811145655200_cit38","doi-asserted-by":"publisher","first-page":"352","DOI":"10.1016\/j.gee.2020.07.019","article-title":"Conversion of Au\u00ad(III)-polluted Waste\nEggshell into Functional CaO\/Au nanocatalyst for Biodiesel Production","volume":"7","author":"Liu","year":"2022","journal-title":"Green Energy Environ."},{"issue":"9","key":"2026081811145655200_cit39","doi-asserted-by":"publisher","DOI":"10.1002\/cplu.202400117","article-title":"Artificial\nNeural Network and Response Surface Methodology for Predicting and\nMaximizing Biodiesel Production from Waste Oil with KI\/CaO\/Al2O3 Catalyst in a Fixed Bed Reactor","volume":"89","author":"Loryuenyong","year":"2024","journal-title":"ChemPlusChem"},{"key":"2026081811145655200_cit40","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1016\/j.minpro.2015.12.006","article-title":"Stability of CaCO3 in\nCa\u00ad(OH)2 solution","volume":"147","author":"Kilic","year":"2016","journal-title":"Int. J. Miner.\nProcess."},{"key":"2026081811145655200_cit41","doi-asserted-by":"publisher","first-page":"13","DOI":"10.1016\/j.fuproc.2012.09.032","article-title":"Transesterification\nof soybean oil to biodiesel using zeolite supported CaO as strong\nbase catalysts","volume":"109","author":"Wu","year":"2013","journal-title":"Fuel Process. Technol."},{"key":"2026081811145655200_cit42","doi-asserted-by":"publisher","first-page":"443","DOI":"10.1007\/s11144-019-01622-9","article-title":"Catalytic\nsynthesis of biodiesel from waste cooking\noil and corn oil over zirconia-based metal oxide nanocatalysts","volume":"128","author":"Afsharizadeh","year":"2019","journal-title":"React. Kinet., Mech. Catal."},{"key":"2026081811145655200_cit43","doi-asserted-by":"publisher","first-page":"675","DOI":"10.1016\/j.jtusci.2015.07.008","article-title":"Influence of operating\nvariables on the transesterification of waste cooking oil to biodiesel\nover sodium silicate catalyst: A statistical approach","volume":"10","author":"Daramola","year":"2016","journal-title":"J. Taibah Univ. Sci."},{"key":"2026081811145655200_cit44","doi-asserted-by":"publisher","first-page":"1963","DOI":"10.1016\/j.fuel.2011.01.004","article-title":"Microwave\nirradiation-assisted transesterification\nof soybean oil to biodiesel catalyzed by nanopowder calcium oxide","volume":"90","author":"Hsiao","year":"2011","journal-title":"Fuel"},{"key":"2026081811145655200_cit45","doi-asserted-by":"publisher","first-page":"79","DOI":"10.55713\/jmmm.v32i1.1149","article-title":"Biodiesel\nproduction from waste cooking oil using a new heterogeneous catalyst\nSrO doped CaO nanoparticles","volume":"32","author":"Prokaewa","year":"2022","journal-title":"J. Met., Mater.\nMiner."},{"key":"2026081811145655200_cit46","doi-asserted-by":"publisher","first-page":"169","DOI":"10.1007\/s13399-012-0070-2","article-title":"CaO loaded with Sr\u00ad(NO3)2 as a\nheterogeneous catalyst for biodiesel production\nfrom cottonseed oil and waste frying oil","volume":"3","author":"Anastopoulos","year":"2013","journal-title":"Biomass\nConvers. Biorefin."},{"key":"2026081811145655200_cit47","doi-asserted-by":"publisher","first-page":"620","DOI":"10.1016\/j.fuel.2015.03.018","article-title":"Biodiesel synthesis\nfrom canola oil via heterogeneous catalysis using functionalized CaO\nnanoparticles","volume":"153","author":"Degirmenbasi","year":"2015","journal-title":"Fuel"},{"key":"2026081811145655200_cit48","doi-asserted-by":"publisher","first-page":"18","DOI":"10.5380\/reterm.v17i1.62254","article-title":"Biodiesel\nproduction from microwave\nirradiated reactor using homogeneous and heterogeneous catalysis","volume":"17","author":"Rabelo","year":"2018","journal-title":"Engenharia Te\u0301rmica"},{"key":"2026081811145655200_cit49","doi-asserted-by":"publisher","first-page":"012053","DOI":"10.1088\/1757-899X\/1087\/1\/012053","article-title":"CaO from chicken\neggshell supported on activated carbon and KOH (CaO\/C\/KOH) as catalyst\nfor biodiesel production from off grade palm oil","volume":"1087","author":"Helwani","year":"2021","journal-title":"IOP Conf. Ser.:Mater. Sci. Eng."},{"key":"2026081811145655200_cit50","doi-asserted-by":"publisher","first-page":"1626","DOI":"10.1016\/j.renene.2020.10.039","article-title":"Biodiesel production via transesterification\nof canola oil in the presence of Na\u2013K doped CaO derived from\ncalcined eggshell","volume":"163","author":"Khatibi","year":"2021","journal-title":"Renewable Energy"},{"key":"2026081811145655200_cit51","doi-asserted-by":"publisher","first-page":"1873","DOI":"10.1002\/bbb.2684","article-title":"Catalytic\nevaluation of eggshell-based calcium methoxide over Al2O3 for biodiesel generation from waste cooking oil","volume":"18","author":"Camacho-Valencia","year":"2024","journal-title":"Biofuels, Bioprod. Biorefin."},{"key":"2026081811145655200_cit52","doi-asserted-by":"publisher","first-page":"101836","DOI":"10.1016\/j.jscs.2024.101836","article-title":"Green synthesis\nof metal oxides (CaO-K2O)\ncatalyst using golden apple snail shell and cultivated banana peel\nfor production of biofuel from non-edible Jatropha Curcas oil (JCO) via a central composite design (CCD)","volume":"28","author":"Buasri","year":"2024","journal-title":"J. Saudi Chem. Soc."},{"key":"2026081811145655200_cit53","doi-asserted-by":"publisher","first-page":"106233","DOI":"10.1016\/j.catcom.2020.106233","article-title":"Transesterification\nof Jatropha oil to biodiesel using SrO catalysts modified with CaO\nfrom waste eggshell","volume":"149","author":"Palitsakun","year":"2021","journal-title":"Catal. Commun."}],"container-title":["ACS Omega"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pubs.acs.org\/doi\/pdf\/10.1021\/acsomega.4c09118","content-type":"application\/pdf","content-version":"vor","intended-application":"unspecified"},{"URL":"https:\/\/pubs.acs.org\/acsodf\/article-pdf\/10\/7\/6827\/40795038\/ao4c09118.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/pubs.acs.org\/acsodf\/article-pdf\/10\/7\/6827\/40795038\/ao4c09118.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T17:21:02Z","timestamp":1787073662000},"score":1,"resource":{"primary":{"URL":"https:\/\/pubs.acs.org\/acsodf\/article\/10\/7\/6827\/3652174\/Biodiesel-Production-Using-K-Sr-CaO-and-CaO"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,2,16]]},"references-count":53,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2025,2,16]]},"published-print":{"date-parts":[[2025,2,25]]}},"URL":"https:\/\/doi.org\/10.1021\/acsomega.4c09118","relation":{},"ISSN":["2470-1343"],"issn-type":[{"value":"2470-1343","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,2,16]]}}}