Surface acid properties of Nb2O5–P2O5–SiO2 gel-derived catalysts

Characterization of Sol-Gel Derived CuO@SiO2 Nano Catalysts towards Gas Phase Reactions

One distinct concentration of copper ions was embedded into the silica matrix to xerogel form using copper source Cu(NO3)2∙3H2O. The xerogel samples were prepared with using hydrolysis and condensation reactions of TetraEthyl Ortho-Silicate (TEOS) by the sol-gel method. In this investigation, new molar ratio of H2</su...

Manganese and Cobalt Salts of Para-Amino-Benzoic Acid Supported on Silica Gel as Oxidizing Catalysts

Para-Aminobenzoic acid is supported on silica gel via reaction of activated silica gel and p-aminobenzoic acid which is then converted to its manganese and cobalt salts. A mixture of the manganese and cobalt salts of the acid is used to catalyze allylic and benzylic alcohols to their corresponding carbonyl compounds in reasonable yields using oxygen or air. Reactions are clean and the catal...

Surface Interactions of Biomass Derived Oxygenates with Heterogeneous Catalysts

Effect of Concentration and Thermal Treatment on the Properties of Sol-Gel Derived CuO/SiO2 Nanostructure

Various concentrations of copper are embedded into silica matrix to xerogel form using copper source - Cu(NO3)2∙3H2O. The xerogel samples are prepared by hydrolysis and condensation of tetraethyl orthosilicate (TEOS) by the sol-gel method  and with determination of new molar ratio of components H2O/TEOS to be 6.2. In this investigation, the necess...

Some studies on the surface modification of sol-gel derived hydrophilic Silica nanoparticles

In the present investigation surface modification of silica nanoparticles by alumina was carried out by sol-gel process. Fourier transform infrared (FTIR) and X-ray fluorescence (XRF) confirmed the synthesis of silica and the surface modification as alumina is anchored to silica surface. Field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) investigation...