Ethene oxychlorination over CuCl2/γ-Al2O3 catalyst in micro- and millistructured reactors

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Sammanfattning

Oxychlorination of ethene was performed over CuCl2/γ-Al2O3 catalyst in a microreactor (460 µm in diameter) and for comparison in a millireactor (1 cm in diameter). A copper-modified catalyst was prepared by a conventional evaporation–impregnation method without any promotors (e.g., K, Na, La) using copper (II) chloride as a precursor. The catalyst was characterized by nitrogen physisorption, Fourier transform infrared spectroscopy using pyridine, temperature-programmed desorption of CO2, scanning electron microscopy, energy-dispersive X-ray microanalysis, and transmission electron microscopy. Different reactor types led to notable differences in catalytic performance at the same partial pressures in terms of both activity and selectivity. A higher reaction rate was achieved in the microreactor, which was 4.5 times faster. The activity decline and different selectivity to the desired product are explained by a change in the oxychlorination mechanism due to a different ratio of reagents in the mixture during the reaction.

OriginalspråkOdefinierat/okänt
Sidor (från-till)334–344
TidskriftJournal of Catalysis
Volym364
DOI
StatusPublicerad - 2018
MoE-publikationstypA1 Tidskriftsartikel-refererad

Nyckelord

  • Chemical Engineering

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