Abstract
A novel method to prepare the nano-sized Pt metal catalysts is proposed. Mesoporous silica containing highly dispersed titanium oxide species (Ti-HMS) can act as a platform to generate highly dispersed Pt metal particles, as confirmed by Pt L III -edge XAFS and CO adsorption. The Pt metal particle on the Ti-HMS was smaller than that of without one. The nano-sized Pt metal catalyst is useful as efficient catalyst for hydrogenation of nitrobenzene, and higher reaction rate could be attained with smaller size of Pt metal particles.
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