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K- and Cu-doped CaTiO3-based nanostructured hollow spheres as alternative catalysts to produce fatty acid ethyl esters as potential biodiesel

dc.contributor.authorLanfredi S.
dc.contributor.authorMatos J.
dc.contributor.authorda Silva S.R.
dc.contributor.authorDjurado E.
dc.contributor.authorSadouki A.S.
dc.contributor.authorChouaih A.
dc.contributor.authorPoon P.S.
dc.contributor.authorGonzález E.R.P.
dc.contributor.authorNobre M.A.L.
dc.date.accessioned2020-09-02T22:21:13Z
dc.date.available2020-09-02T22:21:13Z
dc.date.issued2020
dc.identifier10.1016/j.apcatb.2020.118986
dc.identifier.citation272, , -
dc.identifier.issn09263373
dc.identifier.urihttps://hdl.handle.net/20.500.12728/5038
dc.descriptionNew functional polycation oxide-type catalysts were synthesized by the ultrasonic spray-pyrolysis method. The catalytic activity in the production of fatty acid ethyl esters (FAEE's) using soybean oil was studied. Catalysts are conformed by nanostructured hollow spheres of low density with a stoichiometric formula Ca1-xKxTiCux/2O3. The influence of the substitutional ratio (x) upon the catalytic activity was verified. The Ca1-xKxTiCux/2O3 sample with x = 0.3 showed the highest activity with a yield up to 89 % to produce fatty acid ethyl esters (FAEE's) after 24 h reaction using 15 wt.% catalysts, 120 °C and 40 bars. The enhancement in the activity was ascribed to the substitution of the Ca+2 sites by K+ and Ti+4 by Cu+2 and to the hollow morphology favoring a more effective interaction between the soybean oil and the active basic sites of the catalysts. © 2020 Elsevier B.V.
dc.language.isoen
dc.publisherElsevier B.V.
dc.subjectCaTiO3-based catalysts
dc.subjectFAEE's synthesis
dc.subjectHollow spheres
dc.subjectK- and Cu-doping
dc.subjectUltrasonic Spray Pyrolysis
dc.subjectBiodiesel
dc.subjectCatalyst activity
dc.subjectEsters
dc.subjectNanocatalysts
dc.subjectPerovskite
dc.subjectSoybean oil
dc.subjectSpray pyrolysis
dc.subjectAlternative catalysts
dc.subjectBasic sites
dc.subjectEffective interactions
dc.subjectFatty acid ethyl ester
dc.subjectHollow sphere
dc.subjectNano-structured
dc.subjectPolycations
dc.subjectUltrasonic spray pyrolysis method
dc.subjectFatty acids
dc.titleK- and Cu-doped CaTiO3-based nanostructured hollow spheres as alternative catalysts to produce fatty acid ethyl esters as potential biodiesel
dc.typeArticle


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