Synthesis and Characterization of SrO-Supported Al2O3 Applied as Heterogeneous Catalys

Gilberto J. Pereira; Fernando dos Santos Ortega

doi:10.4028/www.scientific.net/MSF.727-728.1108

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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Synthesis and Characterization of SrO-Supported...

Synthesis and Characterization of SrO-Supported Al₂O₃ Applied as Heterogeneous Catalys

Abstract:

In this work, samples of 15 mol% Sr-doped Al₂O₃ were synthesized by Pechini's method and calcined at 900°C. DRX analysis showed that only corundum phase is present, and no shift on the main peaks was observed, suggesting that the additive is preferentially located on the surface of nanoparticles as a surface excess. SrO show high basic character and is applied as heterogeneous catalyst in transesterification of soybean oil to produce biodiesel. Since SrO is difficult to obtain through Pechinis method, due to high stability of SrCO₃, the use of Al₂O₃ as a catalyst support produced via polymeric precursor was studied, and the reaction of transesterification was successfully made, because the crystallization of strontium carbonate on the corundum surface was avoided using the washing procedure. Also, the catalyst was characterized by DSC, isoelectric point and surface area.

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Periodical:

Materials Science Forum (Volumes 727-728)

Pages:

1108-1112

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.1108

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Online since:

August 2012

Authors:

Gilberto J. Pereira, Fernando dos Santos Ortega

Keywords:

Bio-Diesel, Pechini, Surface Excess, Synthesis

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