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Preparation of Magnetic Compositions of Diatomite

A new magnetitediatomite compositions was synthesized by co-precipitation diatomite with Fe2+ and Fe3+ in the presence of diatomite. Magnetic compositions of diatomite were investigated using XRD and SEM. Comprehensive analysis for SEM and XRD data shows that the most favorable magnetic particle including to the diatomite pores in DM-15 and DM-30. Increasing of content of maghemite in compositions causes reduction of the proportion of smectite and mica, which is associated with the destruction of the crystal lattice. Determined by the interaction between the diatomite surface and including particles of magnetite and maghemite can be hydrogen bonds between the SiOH and SiOH2+-groups of the diatomite surface and the iron (II) and iron (III) oxides.