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Heterogeneous Esterification of Waste Cooking Oil with Sulfated Titanium Dioxide (STi).

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Title: Heterogeneous Esterification of Waste Cooking Oil with Sulfated Titanium Dioxide (STi).
Authors: Berrones-Hernández, Roberto1 (AUTHOR), del Carmen Pérez-Luna, Yolanda1 (AUTHOR), Sánchez-Roque, Yazmin1 (AUTHOR), Pantoja-Enríquez, Joel2 (AUTHOR), Grajales-Penagos, Amairani Leticia1 (AUTHOR), López-Cruz, Carlos Francisco1 (AUTHOR), Longoria, Adriana3 (AUTHOR), Eapen, D.3 (AUTHOR), Sebastian, P. J.3 (AUTHOR) sjp@ier.unam.mx
Source: BioEnergy Research. Sep2019, Vol. 12 Issue 3, p653-664. 12p.
Subjects: Petroleum waste, Titanium dioxide, Free fatty acids, Esterification, Oleic acid
Abstract: In this work, a sulfated titanium dioxide (STi) catalyst obtained from a commercial TiO2 precursor was synthesized and characterized. The catalyst was sulfated by the simple impregnation method with H2SO4 and subsequently calcined at different temperatures. The synthesized catalyst was characterized by X-ray Diffraction (XRD), Energy-Dispersive Spectroscopy (EDS), and Scanning Electron Microscopy (SEM). The sulfated catalyst was thermally treated at different temperatures (100, 200, 400, and 600 °C) and evaluated in oleic acid esterification reactions by varying the concentration of the catalyst during the conversion of oleic acid to methyl oleate. The conversion was measured from the variation of the acid index (AI)° and free fatty acids (FFA) during the reaction. The STi catalyst obtained was compared with two homogeneous catalysts, H2SO4 and ferric sulfate [Fe2(SO4)3], evaluating the reaction time in the conversion, from which improvements in the reaction performance of the catalyst synthesized in this work were observed versus the two homogeneous catalysts mentioned earlier. Catalyst reuse cycles were also evaluated as well as their performance in the esterification of waste cooking oil. The best catalyst yields reached values close to 86% in a reaction time of 6 h. [ABSTRACT FROM AUTHOR]
Copyright of BioEnergy Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Heterogeneous Esterification of Waste Cooking Oil with Sulfated Titanium Dioxide (STi).
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  Data: <searchLink fieldCode="AR" term="%22Berrones-Hernández%2C+Roberto%22">Berrones-Hernández, Roberto</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22del+Carmen+Pérez-Luna%2C+Yolanda%22">del Carmen Pérez-Luna, Yolanda</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sánchez-Roque%2C+Yazmin%22">Sánchez-Roque, Yazmin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pantoja-Enríquez%2C+Joel%22">Pantoja-Enríquez, Joel</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Grajales-Penagos%2C+Amairani+Leticia%22">Grajales-Penagos, Amairani Leticia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22López-Cruz%2C+Carlos+Francisco%22">López-Cruz, Carlos Francisco</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Longoria%2C+Adriana%22">Longoria, Adriana</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Eapen%2C+D%2E%22">Eapen, D.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sebastian%2C+P%2E+J%2E%22">Sebastian, P. J.</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> sjp@ier.unam.mx</i>
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  Data: <searchLink fieldCode="JN" term="%22BioEnergy+Research%22">BioEnergy Research</searchLink>. Sep2019, Vol. 12 Issue 3, p653-664. 12p.
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  Data: <searchLink fieldCode="DE" term="%22Petroleum+waste%22">Petroleum waste</searchLink><br /><searchLink fieldCode="DE" term="%22Titanium+dioxide%22">Titanium dioxide</searchLink><br /><searchLink fieldCode="DE" term="%22Free+fatty+acids%22">Free fatty acids</searchLink><br /><searchLink fieldCode="DE" term="%22Esterification%22">Esterification</searchLink><br /><searchLink fieldCode="DE" term="%22Oleic+acid%22">Oleic acid</searchLink>
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  Data: In this work, a sulfated titanium dioxide (STi) catalyst obtained from a commercial TiO2 precursor was synthesized and characterized. The catalyst was sulfated by the simple impregnation method with H2SO4 and subsequently calcined at different temperatures. The synthesized catalyst was characterized by X-ray Diffraction (XRD), Energy-Dispersive Spectroscopy (EDS), and Scanning Electron Microscopy (SEM). The sulfated catalyst was thermally treated at different temperatures (100, 200, 400, and 600 °C) and evaluated in oleic acid esterification reactions by varying the concentration of the catalyst during the conversion of oleic acid to methyl oleate. The conversion was measured from the variation of the acid index (AI)° and free fatty acids (FFA) during the reaction. The STi catalyst obtained was compared with two homogeneous catalysts, H2SO4 and ferric sulfate [Fe2(SO4)3], evaluating the reaction time in the conversion, from which improvements in the reaction performance of the catalyst synthesized in this work were observed versus the two homogeneous catalysts mentioned earlier. Catalyst reuse cycles were also evaluated as well as their performance in the esterification of waste cooking oil. The best catalyst yields reached values close to 86% in a reaction time of 6 h. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of BioEnergy Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s12155-019-09999-0
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        Type: general
      – SubjectFull: Titanium dioxide
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      – SubjectFull: Free fatty acids
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      – SubjectFull: Esterification
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      – SubjectFull: Oleic acid
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      – TitleFull: Heterogeneous Esterification of Waste Cooking Oil with Sulfated Titanium Dioxide (STi).
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