Microcalorimetric studies and methane reforming by CO2 on Ni-based zeolite catalysts
Identifieur interne : 000237 ( France/Analysis ); précédent : 000236; suivant : 000238Microcalorimetric studies and methane reforming by CO2 on Ni-based zeolite catalysts
Auteurs : D. Halliche [Algérie] ; O. Cherifi [Algérie] ; A. Auroux [France]Source :
- Thermochimica acta [ 0040-6031 ] ; 2005.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
A series of catalysts containing nickel, based on HZSM-5 and USY zeolites, have been prepared by ionic exchange; a Ni/γ-Al2O3 catalyst has been prepared by impregnation, for comparison. Ammonia and CO adsorption microcalorimetry and temperature programmed reduction experiments have shown that NiZSM-5 is the most acidic and the most reducible catalyst. The study of the reaction of methane reforming by carbon dioxide in presence of these catalysts has shown that the catalytic performance depends simultaneously on the acidity, reducibility, and structure of the zeolite. Globally, it appears that the catalytic properties of NiUSY are superior to those of NiZSM-5 and Ni/γ-Al2O3.
Affiliations:
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Pascal:06-0044720Le document en format XML
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<affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire de Chimie du Gaz Naturel, Faculté de Chimie, USTHB, BP32</s1>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adsorption isotherm</term>
<term>Carbon dioxide</term>
<term>Catalyst</term>
<term>Heterogeneous catalysis</term>
<term>Methane</term>
<term>Microcalorimetry</term>
<term>Molecular sieve</term>
<term>Reforming</term>
<term>Thermal analysis</term>
<term>Zeolite</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Microcalorimétrie</term>
<term>Méthane</term>
<term>Reformage</term>
<term>Carbone dioxyde</term>
<term>Zéolite</term>
<term>Catalyseur</term>
<term>Tamis moléculaire</term>
<term>Catalyse hétérogène</term>
<term>Isotherme adsorption</term>
<term>Analyse thermique</term>
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<front><div type="abstract" xml:lang="en">A series of catalysts containing nickel, based on HZSM-5 and USY zeolites, have been prepared by ionic exchange; a Ni/γ-Al<sub>2</sub>
O<sub>3</sub>
catalyst has been prepared by impregnation, for comparison. Ammonia and CO adsorption microcalorimetry and temperature programmed reduction experiments have shown that NiZSM-5 is the most acidic and the most reducible catalyst. The study of the reaction of methane reforming by carbon dioxide in presence of these catalysts has shown that the catalytic performance depends simultaneously on the acidity, reducibility, and structure of the zeolite. Globally, it appears that the catalytic properties of NiUSY are superior to those of NiZSM-5 and Ni/γ-Al<sub>2</sub>
O<sub>3</sub>
.</div>
</front>
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