Effect of the sequence of chemical transformations on the spatial segregation of components and formation of periclase-spinel nanopowders in the MgO–Fe2O3–H2O System


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Specific features of the process in which oxide nanopowders are formed in a hydrothermal treatment of coprecipitated magnesium and iron oxides were studied. It was shown that the rate at which oxide nanoparticles are formed increases when reagents structurally close to the final product are used. It was found that, with the hydrothermal treatment of coprecipitated magnesium and iron hydroxides at 450°C combined with the subsequent thermal treatment in air at temperatures of 400–600°C, it is possible to obtain a homogeneous mixture of nanocrystalline powders based on an iron-containing spinel phase and magnesium oxide.

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A. Komlev

Kungliga Tekniska Högskolan (KTH)

编辑信件的主要联系方式.
Email: andei.a.komlev@gmail.com
瑞典, Roslagstullsbacken 21, SE-106 91, Stockholm

V. Panchuk

St. Petersburg State University

Email: andei.a.komlev@gmail.com
俄罗斯联邦, Universitetskaya nab. 7−9, St. Petersburg, 199034

V. Semenov

St. Petersburg State University

Email: andei.a.komlev@gmail.com
俄罗斯联邦, Universitetskaya nab. 7−9, St. Petersburg, 199034

O. Almjasheva

St. Petersburg State Electrotechnical University LETI

Email: andei.a.komlev@gmail.com
俄罗斯联邦, ul. Professora Popova 5, St. Petersburg, 197376

V. Gusarov

Ioffe Institute

Email: andei.a.komlev@gmail.com
俄罗斯联邦, Politekhnicheskaya ul. 26, St. Petersburg, 194021

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