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  • Title: Synthesis of mesoporous silica with embedded nickel nanoparticles for catalyst applications.
    Author: Leite ER, Carreño NL, Longo E, Valentini A, Probst LF.
    Journal: J Nanosci Nanotechnol; 2002 Feb; 2(1):89-94. PubMed ID: 12908326.
    Abstract:
    Here we describe a new route for the synthesis of nanometric Ni particles embedded in a mesoporous silica material with excellent potential for catalytic applications. Mesoporous silica with a surface area in the range of 202-280 m2/g, with narrow pore size distribution and Ni nanoparticles (particles in the range of 3-41 nm) were obtained in a direct process. A different approach was adopted to process such a nanocomposite. This new approach is based on the formation of a polymer with the silicon oxianion and nickel cation chelated to the macromolecule structure and on the control of the pyrolysis step. The CO/CO2 atmosphere resulting from the pyrolysis of the organic material promotes the reduction of the Ni citrate.
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