Effect of in situ addition of Pd in SBA-15 for the deoxygenation of stearic acid
Vol. 28 No. 3 (2015), Research Papers
Vol. 28 No. 3 (2015)

Effect of in situ addition of Pd in SBA-15 for the deoxygenation of stearic acid

Research Papers
Published 2015-09-15
J. C. Pacheco Sosa
Unidad de Energía Renovable del Centro de Investigación Científica de Yucatán
J. C. Chavarria Hernández
Unidad de Energía Renovable del Centro de Investigación Científica de Yucatán
B. Escobar Morales
Unidad de Energía Renovable del Centro de Investigación Científica de Yucatán
L. C. Ordoñez López
Unidad de Energía Renovable del Centro de Investigación Científica de Yucatán
H. Pérez Vidal
División Académica de Ciencias Básicas (DACB), Universidad Juárez Autónoma de Tabasco (UJAT)
J. G. Torres Torres
División Académica de Ciencias Básicas (DACB), Universidad Juárez Autónoma de Tabasco (UJAT)
J. S. Ferráez Hernández
División Académica de Ciencias Básicas (DACB), Universidad Juárez Autónoma de Tabasco (UJAT)
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Keywords

SBA-15 mesoporous silicates
In situ method
Catalytic deoxygenation
Stearic acid. Silicatos mesoporosos SBA-15
Método in situ
Desoxigenación catalítica
Ácido esteárico.

How to Cite

Pacheco Sosa, J. C., Chavarria Hernández, J. C., Escobar Morales, B., Ordoñez López, L. C., Pérez Vidal, H., Torres Torres, J. G., & Ferráez Hernández, J. S. (2015). Effect of in situ addition of Pd in SBA-15 for the deoxygenation of stearic acid. Superficies Y Vacío, 28(3), 69-73. Retrieved from https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/19
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Abstract

Several mesoporous SBA-15 type supports were synthesized; some of them were modified with an auxiliary organic molecule (SBA-15/TMB). The catalysts were obtained by in-situ addition of Pd (0.5- 3.0 %wt) during supports synthesis. The materials were characterized by Nitrogen physisorption, XRD, SAXS, TPR and SEM. The catalytic activity was tested in the deoxygenation of stearic acid (SA) at 300°C and 20 bar, feeding 0.25 ml/min of SA (4 %wt) in dodecane, and 50 ml/min of H2 (10%volume) in N2. The synthesized solids showed characteristic properties of mesoporous materials, and the organic molecule had an effect of expansion and disordering of the structure of the material, generating increments of the textural properties, while Pd addition did not cause significant changes in the structural properties of these materials. The catalysts showed high initial conversions of SA (40-75%), decreasing to 20-40% after 6 h reaction. Higher content of Pd produced higher conversion of SA and lower catalyst deactivation. Catalysts with TMB were less active. Selectivity to non-oxygenated products was 100% with n-heptadecane as the main product.

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