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Catalytic decarboxylation of palmitic acid to n-pentadecane

Abstract : The catalytic decarboxylation of palmitic acid to n-pentadecane was studied in a batch reactor in the presence of bimetallic Ni-Me catalysts (where Me = Fe, Cu or Ag) supported on activated carbon. These catalysts were prepared using a high-throughput robot of the REALCAT platform of UCCS by deposition-precipitation using hydrazine as reducing agent. These catalysts were characterized by ICP, N2 adsorption, XPS, XRD and TEM in order to obtain information relative to their compositions, textural properties, surfaces and morphologies. In this study, the optimization of the catalytic process was also investigated for various reaction parameters for the most promising samples. The main studied parameters were, on the one hand, the impact of the addition of a second metal on the performance of the nickel-based catalysts and, on the other hand, the effect of temperature, reaction time, initial reactant concentrations, atmosphere and mass of catalyst used. The conclusion of this study is that the 10%Ni10%Cu/C completely converts palmitic acid with a selectivity of 95 % to n-pentadecane in 6 h, at 320 °C under 10% H2 in N2 at an initial pressure of 20 bar. This catalyst exhibited excellent recyclability after three consecutive tests
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Anouchka Mapembé Kimené. Catalytic decarboxylation of palmitic acid to n-pentadecane. Catalysis. Ecole Centrale de Lille, 2017. English. ⟨NNT : 2017ECLI0031⟩. ⟨tel-01785814⟩

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