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

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Zuzana Vajglová, Narendra Kumar, Kari Eränen, Markus Peurla, Dmitry Yu. Murzin, Tapio Salmi
Publiceringsår: 2018
Tidskrift: Journal of Catalysis
Tidskriftsakronym: J. Catal.
Volym: 364
Artikelns första sida, sidnummer: 334
Artikelns sista sida, sidnummer: 344
eISSN: 1090-2694


Abstrakt

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.


Nyckelord

Chemical Engineering

Senast uppdaterad 2019-17-11 vid 02:50