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- W1996105874 abstract "A fume pyrolysis technique using a nickel-containing tetraethoxysilan solution was applied to the preparation of a microporous and highly dispersed Ni/SiO2 catalyst and compared with nickel-loading onto microporous silica by the conventional impregnation and ion-exchange methods. During impregnation, although the microporous structure remained unaltered, large Ni particles were deposited onto the external surface of the silica particles. Although the ion-exchange method resulted in a high dispersion, the process eroded the silica texture and lowered the pore volume remarkably. In contrast, the fume pyrolysis of a spray of a solution consisting of nickel-incorporated siloxane polymers, prepared through an alkoxide procedure, formed a catalyst which had very small Ni particles in micropores of silica. In spite of the same precursory solution, a simple dryness by evaporation led to pore expansion into the mesopore region and a decrease in the Ni dispersion." @default.
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- W1996105874 date "2002-10-01" @default.
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- W1996105874 title "Fume Pyrolysis of Nickel-Containing Silica Sol for the Preparation of a Microporous Ni/SiO2Catalyst and a Comparison with Other Nickel-Loading Methods onto Microporous Silica" @default.
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- W1996105874 doi "https://doi.org/10.1246/bcsj.75.2283" @default.
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