Author/Authors :
Tatiana Rostovshchikova، نويسنده , , Vladimir Smirnov، نويسنده , , Olga Kiseleva، نويسنده , , Valentina Yushcenko، نويسنده , , Mark Tzodikov، نويسنده , , Yurii Maksimov، نويسنده , , Igor Suzdalev، نويسنده , , Leonid Kustov، نويسنده , , Olga Tkachenko، نويسنده ,
Abstract :
Relations between the catalyst structure, acid and catalytic properties of two types of silica (silica gel and layer silica) modified by γ-ferric oxide nanoparticles of a different size (2–4 and 8–10 nm) were studied in the benzene alkylation by benzyl chloride. The catalysts were characterized by means of Mossbauer spectroscopy, temperature programmed NH3 desorption and diffuse reflectance infrared Fourier transform spectroscopy (DRIFT) using CO and CD3CN as test molecules. It was found that the particle size and the silica structure strongly affect the catalytic behavior.
Keywords :
silica , iron oxide , structure , Acidity , size , Catalysis , Alkylation
