Details

Autor(en) / Beteiligte

• Chettibi, S
• Keghouche, N
• Benguedouar, Y
• Bettahar, M.M
• Belloni, J

Titel

Structural and catalytic characterization of radiation-induced Ni/Ti[O.sub.2] nanoparticles

Ist Teil von

• Catalysis letters, 2013-11, Vol.143 (11), p.1166

Ort / Verlag

Springer

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The radiolysis route is applied to synthesize nickel catalysts deposited on titanium dioxide. The TPR profile of radiation-induced Ni/Ti[O.sub.2] catalyst indicates a more complete reduction of the irradiated catalysts compared to the conventionally [H.sub.2]-reduced one. When tested in the benzene hydrogenation, the radiolytic Ni/Ti[O.sub.2] exhibits catalytic properties with higher efficiency than the [H.sub.2]-reduced catalyst. This observation is assigned to the presence of intermetallic Ni-Ti compounds ([Ni.sub.2.66][Ti.sub.1.33] and [Ni.sub.3]Ti) evidenced by XRD. In contrast, the calcined and [H.sub.2]-reduced catalyst contains predominantly the oxidized [Ni.sub.5]Ti[O.sub.7] phase, where the nickel is in strong interaction with the support. The TEM observations show highly dispersed nickel.