Abstract
Hydrothermal saline promoted grafting of sulfonic acid groups onto SBA-15 and periodic mesoporous organic silica analogues affords solid acid catalysts with high acid site loadings (>2.5 mmol g−1 H+), ordered mesoporosity and tunable hydrophobicity. The resulting catalysts show excellent activity for fatty acid esterification and tripalmitin transesterification to methyl palmitate, with framework phenyl groups promoting fatty acid methyl esters production.
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Acknowledgments
We thank the EPSRC (EP/K000616/1, EP/F063423/1 and EP/G007594/3) for financial support and a Leadership Fellowship (AFL), and the Royal Society for the award of an Industry Fellowship (KW). We also acknowledge the kind assistance of D.C. Apperley at the EPSRC UK National Solid-state NMR Service at Durham. VCS acknowledges CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnológico) for the award of a postdoctoral scholarship.
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Below is the link to the electronic supplementary material. Electronic Supplementary Information (ESI) available: [porosimetry data, XRD, XPS, MAS-NMR, TGA, DRIFT spectra and FFA esterification reaction profiles]. See DOI: 10.1039/c000000x/
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Pirez, C., Reche, M.T., Lee, A.F. et al. Hydrothermal Saline Promoted Grafting of Periodic Mesoporous Organic Sulfonic Acid Silicas for Sustainable FAME Production. Catal Lett 145, 1483–1490 (2015). https://doi.org/10.1007/s10562-015-1559-7
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DOI: https://doi.org/10.1007/s10562-015-1559-7
Keywords
- Heterogeneous catalysis
- Biodiesel
- Sulfonic acid
- Solid acid
- Esterification
- Transesterification
- Mesoporous materials