Title :

Isomerization of n-hexane over silica-supported heteropoly acids promoted by the reduced Ce-Ni oxides

Author(s) :

Kuang, W. X. [Auteur]
Rives, Alain [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Ben Tayeb, B. O. [Auteur]
Fournier, M. [Auteur]
Hubaut, R. [Auteur]

Journal title :

J. Colloid Interface Sci.

Abbreviated title :

J. Colloid Interface Sci.

Pages :

123-129

Publication date :

2002-04-01

ISSN :

0021-9797

English keyword(s) :

isomerization
n-hexane
silica-supported heteropoly acid
reduced Ce-Ni oxide
promotion
structure

HAL domain(s) :

Chimie

English abstract : [en]

The structure and catalytic properties of silica-supported heteropoly acids promoted by the reduced Ce–Ni oxides are first studied by using chemical analysis XRD, FT-Raman, XPS, EPR, TG, surface area measurements, and ...
Show more >The structure and catalytic properties of silica-supported heteropoly acids promoted by the reduced Ce–Ni oxides are first studied by using chemical analysis XRD, FT-Raman, XPS, EPR, TG, surface area measurements, and microreactor test. It is found that silica-supported heteropoly acids have isomerization activity, but are very easy to deactivate by coke deposition. With the promotion of the reduced Ce–Ni oxides, however, the better activity and the higher selectivity to isomers could be obtained, suggesting that the reduced Ce–Ni oxides really have hydrogenating/dehydrogenating functions. Moreover, it is found that the presence of the reduced Ce–Ni oxides is not only beneficial for eliminating the coke deposition, but also effective for maintaining the structure of silica-supported heteropoly acids during reaction. The effect of the composition of the mechanical mixtures of silica-supported heteropoly acids and the Ce–Ni oxides on the catalytic properties has been explored.Show less >

Language :

Anglais

Administrative institution(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Catalyse pour l’énergie et la synthèse de molécules plateforme (CEMOP)

Submission date :

2023-05-30T18:33:46Z