NickelMaghrebV1, Main, Exploration, bibRecord, 000110

In situ XAS study of an improved natural phosphate catalyst for hydrogen production by reforming of methane

Identifieur interne : 000110 ( Main/Exploration ); précédent : 000109; suivant : 000111

In situ XAS study of an improved natural phosphate catalyst for hydrogen production by reforming of methane

Auteurs : Moctar O. Abba [Espagne, Maroc] ; Victor M. Gonzalez-Delacruz [Espagne] ; Gerardo Colon [Espagne] ; Said Sebti [Maroc] ; Alfonso Caballero [Espagne]

Source :

Applied catalysis. B, Environmental [ 0926-3373 ] ; 2014.

RBID : Pascal:14-0214189

Descripteurs français

Pascal (Inist)
- In situ, Phosphate, Catalyseur, Hydrogène, Reformage, Méthane, Nickel, Catalyse hétérogène, Réaction catalytique, Protection environnement.
Wicri :
- topic : Phosphate, Hydrogène, Nickel.

English descriptors

KwdEn :
- Catalyst, Catalytic reaction, Environmental protection, Heterogeneous catalysis, Hydrogen, In situ, Methane, Nickel, Phosphates, Reforming.

Abstract

Some nickel catalysts supported on natural phosphate (NP) have been tested for the dry methane reforming reaction. Although the original impregnated 15%Ni/NP catalyst has no activity at all, the modification of the support by mechano-chemical and/or acid treatment strongly improved the catalytic performance, yielding a series of very active and stable catalysts. The chemical and physical characterization by X-ray diffraction (XRD), temperature programmed reduction (TPR), in situ X-ray absorption spectroscopy (XAS) and other techniques have shown that these treatments mainly modify the interaction between the nickel phase and the support surface. The nickel ions occupy calcium position in the surface of the phosphate phase, which stabilizes and improves the dispersion of nickel species. The final reduced catalysts present a much better dispersed metallic phase interacting with the NP surface, which has been identified as responsible for the observed outstanding catalytic performances.

Affiliations:

Espagne, Maroc
Andalousie

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Some nickel catalysts supported on natural phosphate (NP) have been tested for the dry methane reforming reaction. Although the original impregnated 15%Ni/NP catalyst has no activity at all, the modification of the support by mechano-chemical and/or acid treatment strongly improved the catalytic performance, yielding a series of very active and stable catalysts. The chemical and physical characterization by X-ray diffraction (XRD), temperature programmed reduction (TPR), in situ X-ray absorption spectroscopy (XAS) and other techniques have shown that these treatments mainly modify the interaction between the nickel phase and the support surface. The nickel ions occupy calcium position in the surface of the phosphate phase, which stabilizes and improves the dispersion of nickel species. The final reduced catalysts present a much better dispersed metallic phase interacting with the NP surface, which has been identified as responsible for the observed outstanding catalytic performances.</div>
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	Serveur d'exploration sur le nickel au Maghreb
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Serveur d'exploration sur le nickel au Maghreb

In situ XAS study of an improved natural phosphate catalyst for hydrogen production by reforming of methane

In situ XAS study of an improved natural phosphate catalyst for hydrogen production by reforming of methane

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri