Abstract
An unusual high catalytic activity (TOF = 117,000 h−1) and high catalyst productivity (TON = 9,700) have been achieved in the first example of partial hydrogenation of renewable polyunsaturated crude methyl esters of linseed and sunflower oils catalyzed by water soluble Rh/TPPTS complexes [TPPTS = P(C6H4-m-SO3Na)3] in aqueous/organic two-phase systems to afford monounsaturated fatty esters which is biodiesel first generation of improved oxidative stability, energy and environmental performance at a low pour point. This exceptionally high catalytic activity contrast with the general perception that industrially applied water soluble Rh/TPPTS catalysts normally exhibit very low rates in the conversions of higher molecular weight starting materials in aqueous/organic two-phase systems.
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Acknowledgments
Financial support of this research by the Postgraduate Studies Programme on “Catalysis an Integrated Approach” of Epeaek II Programme of Greek Ministry of Education and the European Union (75/25) is gratefully acknowledged.
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For part 1 of this series see Ref. [14].
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Bouriazos, A., Mouratidis, K., Psaroudakis, N. et al. Catalytic Conversions in Aqueous Media. Part 2. A Novel and Highly Efficient Biphasic Hydrogenation of Renewable Methyl Esters of Linseed and Sunflower Oils to High Quality Biodiesel Employing Rh/TPPTS Complexes. Catal Lett 121, 158–164 (2008). https://doi.org/10.1007/s10562-007-9314-3
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DOI: https://doi.org/10.1007/s10562-007-9314-3