The effect of oxidation and resulfidation on (Ni/Co)MoS2 hydrodesulfurisation catalysts

G.M. Bremmer; L. van Haandel; E.J.M. Hensen; J.W.M. Frenken; P.J. Kooyman

doi:10.1016/j.apcatb.2018.10.014

The effect of oxidation and resulfidation on (Ni/Co)MoS2 hydrodesulfurisation catalysts

G.M. Bremmer
, L. van Haandel
, E.J.M. Hensen
, J.W.M. Frenken
, P.J. Kooyman (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

63 Citations (Scopus)

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Abstract

The effect of a sequential oxidation and resulfidation treatment on γ-Al2O3 supported (Ni/Co)MoS2 catalyst nanoparticles was investigated using (HR)TEM, XPS, and thiophene HDS catalytic performance experiments. Analysis of the HRTEM images revealed that, after initial sulfidation and oxidation, the resulfidation treatment restored the original slab length or increased it. The chemical composition of the samples, as determined by XPS, also slightly changed: the concentration of oxidic species increased, especially for the Ni promoter atoms. Comparing the catalytic HDS activity of the samples before and after the oxidation-resulfidation treatment showed that the catalysts were more than 20% more active after resulfidation. This increase in HDS activity is ascribed to a redistribution of the (Ni/Co)MoS2 slabs during the second sulfidation treatment, indicating a size effect.

Original language	English
Pages (from-to)	145-150
Number of pages	6
Journal	Applied Catalysis. B, Environmental
Volume	243
DOIs	https://doi.org/10.1016/j.apcatb.2018.10.014
Publication status	Published - Apr 2019

Keywords

(Ni/Co)MoS hydrodesulfurization catalyst
High-resolution transmission electron microscopy
Oxidation-resulfidation
Thiophene HDS
X-ray photoelectron spectroscopy

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title = "The effect of oxidation and resulfidation on (Ni/Co)MoS2 hydrodesulfurisation catalysts",

abstract = "The effect of a sequential oxidation and resulfidation treatment on γ-Al2O3 supported (Ni/Co)MoS2 catalyst nanoparticles was investigated using (HR)TEM, XPS, and thiophene HDS catalytic performance experiments. Analysis of the HRTEM images revealed that, after initial sulfidation and oxidation, the resulfidation treatment restored the original slab length or increased it. The chemical composition of the samples, as determined by XPS, also slightly changed: the concentration of oxidic species increased, especially for the Ni promoter atoms. Comparing the catalytic HDS activity of the samples before and after the oxidation-resulfidation treatment showed that the catalysts were more than 20\% more active after resulfidation. This increase in HDS activity is ascribed to a redistribution of the (Ni/Co)MoS2 slabs during the second sulfidation treatment, indicating a size effect.",

keywords = "(Ni/Co)MoS hydrodesulfurization catalyst, High-resolution transmission electron microscopy, Oxidation-resulfidation, Thiophene HDS, X-ray photoelectron spectroscopy",

author = "G.M. Bremmer and \{van Haandel\}, L. and E.J.M. Hensen and J.W.M. Frenken and P.J. Kooyman",

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T1 - The effect of oxidation and resulfidation on (Ni/Co)MoS2 hydrodesulfurisation catalysts

AU - Bremmer, G.M.

AU - van Haandel, L.

AU - Hensen, E.J.M.

AU - Frenken, J.W.M.

AU - Kooyman, P.J.

PY - 2019/4

Y1 - 2019/4

N2 - The effect of a sequential oxidation and resulfidation treatment on γ-Al2O3 supported (Ni/Co)MoS2 catalyst nanoparticles was investigated using (HR)TEM, XPS, and thiophene HDS catalytic performance experiments. Analysis of the HRTEM images revealed that, after initial sulfidation and oxidation, the resulfidation treatment restored the original slab length or increased it. The chemical composition of the samples, as determined by XPS, also slightly changed: the concentration of oxidic species increased, especially for the Ni promoter atoms. Comparing the catalytic HDS activity of the samples before and after the oxidation-resulfidation treatment showed that the catalysts were more than 20% more active after resulfidation. This increase in HDS activity is ascribed to a redistribution of the (Ni/Co)MoS2 slabs during the second sulfidation treatment, indicating a size effect.

AB - The effect of a sequential oxidation and resulfidation treatment on γ-Al2O3 supported (Ni/Co)MoS2 catalyst nanoparticles was investigated using (HR)TEM, XPS, and thiophene HDS catalytic performance experiments. Analysis of the HRTEM images revealed that, after initial sulfidation and oxidation, the resulfidation treatment restored the original slab length or increased it. The chemical composition of the samples, as determined by XPS, also slightly changed: the concentration of oxidic species increased, especially for the Ni promoter atoms. Comparing the catalytic HDS activity of the samples before and after the oxidation-resulfidation treatment showed that the catalysts were more than 20% more active after resulfidation. This increase in HDS activity is ascribed to a redistribution of the (Ni/Co)MoS2 slabs during the second sulfidation treatment, indicating a size effect.

KW - (Ni/Co)MoS hydrodesulfurization catalyst

KW - High-resolution transmission electron microscopy

KW - Oxidation-resulfidation

KW - Thiophene HDS

KW - X-ray photoelectron spectroscopy

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U2 - 10.1016/j.apcatb.2018.10.014

DO - 10.1016/j.apcatb.2018.10.014

M3 - Article

SN - 0926-3373

VL - 243

SP - 145

EP - 150

JO - Applied Catalysis. B, Environmental

JF - Applied Catalysis. B, Environmental

ER -

The effect of oxidation and resulfidation on (Ni/Co)MoS2 hydrodesulfurisation catalysts

Abstract

Keywords

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