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Article Dans Une Revue Catalysis Letters Année : 2013

Structural and Catalytic Characterization of Radiation-Induced Ni/TiO2 Nanoparticles

Résumé

The radiolysis route is applied to synthesize nickel catalysts deposited on titanium dioxide. The TPR profile of radiation-induced Ni/TiO2 catalyst indicates a more complete reduction of the irradiated catalysts compared to the conventionally H-2-reduced one. When tested in the benzene hydrogenation, the radiolytic Ni/TiO2 exhibits catalytic properties with higher efficiency than the H-2-reduced catalyst. This observation is assigned to the presence of intermetallic Ni-Ti compounds (Ni2.66Ti1.33 and Ni3Ti) evidenced by XRD. In contrast, the calcined and H-2-reduced catalyst contains predominantly the oxidized Ni5TiO7 phase, where the nickel is in strong interaction with the support. The TEM observations show highly dispersed nickel.

Domaines

Chimie

Dates et versions

hal-01494091 , version 1 (22-03-2017)

Identifiants

Citer

S. Chettibi, N. Keghouche, Y. Benguedouar, Mohammed M. Bettahar, J. Belloni. Structural and Catalytic Characterization of Radiation-Induced Ni/TiO2 Nanoparticles. Catalysis Letters, 2013, 143 (11), pp.1166-1174. ⟨10.1007/s10562-013-1045-z⟩. ⟨hal-01494091⟩
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