Engineering Physics Annotation << Back Preparation of Nanodisperse Catalyst in the Pores of Silica Gel Novakova A.A., Chernavsky P.A., Panfilov S.I., Petrovskaya G.A. A new method for obtaining nanocatalyst using porous silica gel is proposed. All the stages of synthesis were studied using X ray diffraction and Mossbauer spectroscopy. In situ magnetometry was used to study the reduction of hematite deposited on silica gel during the thermolysis of glucose. It was shown that both the size of the oxide particles and the phase composition signifi cantly depended on the porous structure of the silica gel. In particular, 2 nm thick shell of goethite doped with silicon is formed on the surface of iron oxide nanoparticles, forming α-FeOOH(Si). The synthesis results in the formation of separated stable nanoparticles of only γ-Fe2 O3 in the silica gel pores. The sizes of the resulting nanoparticles were limited by the pore size. So γ-Fe2 O3 /Q–10 nanocatalyst was obtained. Keywords: Nanocatalysts; iron oxides; silica gel; X-ray diffraction; Mossbauer spectroscopy; magnetic measurements. DOI: 10.25791/infi zik.9.2024.1424 Pp. 26-35.