A Rational Comparison of the Optimal Promoter Edge Decoration of HDT NiMoS vs CoMoS Catalysts - Archive ouverte HAL Access content directly
Journal Articles Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles Year : 2009

A Rational Comparison of the Optimal Promoter Edge Decoration of HDT NiMoS vs CoMoS Catalysts

(1) , (1) , (1) , (1)
1
C. Legens
  • Function : Correspondent author
D. Guillaume

Abstract

In order to gain a better understanding of the morphology and promoter edge content of the active phase of industrial HDT NiMoP catalysts in working conditions, a multi-technique study has been undertaken on a series of NiMoP catalysts with various Ni/Mo ratios. The combination of X-ray Photoelectron Spectroscopy (XPS), Transition Electron Microscopy (TEM), Density Functional Theory (DFT) modeling and catalytic testing (toluene hydrogenation) provided data to build a morphological model of NiMoS nanocrystallites. A parallel has been established with their CoMoS counterparts obtained in our previous work in order to emphasize differences arising from the promoter atom. This study confirms the importance of the presence of mixed Ni-Mo sites on the edges of the NiMoS nanocrystallites, and especially on the M-edge for reactions involving hydrogenation. These results provide new guidelines for future and ever more active catalysts.
Fichier principal
Vignette du fichier
ogst09053.pdf (1.66 Mo) Télécharger le fichier
Origin : Publication funded by an institution
Loading...

Dates and versions

hal-02001594 , version 1 (31-01-2019)

Identifiers

Cite

K. Marchand, C. Legens, D. Guillaume, P. Raybaud. A Rational Comparison of the Optimal Promoter Edge Decoration of HDT NiMoS vs CoMoS Catalysts. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, 2009, 64 (6), pp.719-730. ⟨10.2516/ogst/2009037⟩. ⟨hal-02001594⟩

Collections

IFP OGST
12 View
53 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More