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Characterisation and performance of hydrotalcite-derived CoMo sulphide catalysts for selective HDS in the presence of olefin

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Abstract

Hydrotreating catalysts were prepared from CoMgMoAl layered double hydroxides (LDHs) with different Co and Mo contents. Sulphides were characterised by techniques such as X-ray absorption near edge structure spectroscopy, CO adsorption followed by infrared spectroscopy, X-ray diffraction and nitrogen physisorption. The prepared catalysts were tested in the selective hydrotreating of a model feed (thiophene, cyclohexene and n-heptane) under 573 K and 20 bar of H2, covering a wide range of space velocities (41–439 h−1). All the LDH-derived CoMgMoAl sulphides showed larger selectivity for hydrodesulphurisation when compared to industrial catalysts. The characterisation results allowed a relationship between the nature and concentration of sulphide sites and their catalytic functionalities to be established.

Graphical abstract: Characterisation and performance of hydrotalcite-derived CoMo sulphide catalysts for selective HDS in the presence of olefin

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Publication details

The article was received on 05 Sep 2018, accepted on 23 Oct 2018 and first published on 24 Oct 2018


Article type: Paper
DOI: 10.1039/C8CY01855C
Citation: Catal. Sci. Technol., 2018, Advance Article
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    Characterisation and performance of hydrotalcite-derived CoMo sulphide catalysts for selective HDS in the presence of olefin

    T. L. Coelho, S. Arias, V. O. Rodrigues, S. S. X. Chiaro, L. Oliviero, F. Maugé and A. C. Faro Jr., Catal. Sci. Technol., 2018, Advance Article , DOI: 10.1039/C8CY01855C

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