Processes occurring in fluid of primary alcohols at high pressure during synthesis of corundum

Ivakin, Y.D.; Danchevskaya, M.N.

Авторы: Ivakin Yu D., Danchevskaya M.N.
Сборник: Proceeding of the 6th International Symposium on Supercritical Fluids
Том: 2
Год издания: 2003
Место издания: Institut National Polytechnique de Lorraine Vandoeuvre Cedex, France
Первая страница: 1055
Последняя страница: 1060
Аннотация: In this report the results of studies of processes, taking place in fluids of primary alcohols, and in solid phase, aluminum hydroxide, in autoclave were represented. The processes were carried out at contact of alcohol to aluminum hydroxide in supercritical conditions (T=400°C, P=20 MPa). The products of alcohols transformation in supercritical conditions in contact with Al2O3×nH2O by the chromatographic and mass-spectrometry were studied. The solid-phase transformation products of aluminum hydroxide by methods X-Ray diffraction, IR-spectroscopy, photoluminescence and scanning electron microscopy were investigated. In alcohols fluid (methanol and ethanol at 400°C) at the presence of water vapor and Al2O3×nH2O reactions catalytic pyrolysis, destruction, the increase of the number of the carbon chain, oxidation-reduction reactions, etherification and others proceed. At heating aluminum hydroxide in supercritical fluid of methanol and ethanol at 400°C the boehmite and then the corundum will be formed. The generated boehmite has the shape of spherical aggregates from thin plates, which then transform into plate corundum.
Добавил в систему: Ивакин Юрий Дмитриевич

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