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

K. Marchand; C. Legens; D. Guillaume; P. Raybaud

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

K. Marchand ¹ C. Legens ^{1, *} D. Guillaume ¹ P. Raybaud ¹

* Corresponding author

1 IFPEN - IFP Energies nouvelles

K. Marchand ¹ AuthorId : 242332
Author

C. Legens ¹ AuthorId : 758089
Correspondent author

D. Guillaume ¹ AuthorId : 80885
Author

P. Raybaud ¹ AuthorId : 11391190
Author

1 IFPEN - IFP Energies nouvelles (1-4 avenue de Bois Préau 92500 Rueil-Malmaison - France) StructId : 300006

IFPEN - IFP Energies nouvelles (Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize - France) StructId : 534301

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.

Document type :

Journal articles

Domain :

Physics [physics]

Complete list of metadatas

Cited literature [27 references] Display Hide Download

https://hal-ifp.archives-ouvertes.fr/hal-02001594
Contributor : Edp Sciences <>
Submitted on : Thursday, January 31, 2019 - 11:38:10 AM
Last modification on : Thursday, February 7, 2019 - 4:26:58 PM
Long-term archiving on : Wednesday, May 1, 2019 - 5:58:59 PM

ogst09053.pdf

Publication funded by an institution

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

File

Identifiers

Collections

Citation

Export

Metrics

8

8

Contact

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

File

Identifiers

Collections

Citation

Export

Share

Metrics

8

8

Contact