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Crystallization of Ca(HCOO)2 from aqueous solutions was studied and conditions under which an ultrapure product can be obtained were determined. 相似文献
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Two methods of calcium nitrate purification were studied: crystallization from aqueous solutions and joint precipitation of impurities from aqueous solutions onto inorganic collectors (calcium hydroxide or carbonate and hydrated aluminum or zirconium oxides). The efficiency of purification of calcium nitrate solutions was studied and the purification coefficients were calculated for hydrated aluminum or zirconium oxides as collectors. 相似文献
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Fakeev A. A. Vasil'eva L. V. Sukhanovskaya A. I. 《Russian Journal of Applied Chemistry》2003,76(2):167-170
Two methods of calcium chloride purification were studied: crystallization from aqueous solutions and joint precipitation of impurities from aqueous solutions onto inorganic collectors (hydrated aluminum or zirconium oxides). The purification factors were calculated and a high efficiency of purification of calcium chloride solutions with hydrated zirconium dioxide as collector was established. 相似文献
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Fakeev A. A. Kurmanguzhina L. K. Sukhanovskaya A. I. 《Russian Journal of Applied Chemistry》2002,75(5):706-711
Coprecipitation of 3d-element impurities from solutions of calcium nitrate with hydrated aluminum oxide (collector) was studied using radioactive tracers. The structure of the collector was studied by 1H NMR and IR spectroscopy. 相似文献
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It is shown experimentally that the base drag of bodies of revolution in Mach 1.15 to 3.0 flow can be completely eliminated using special techniques for injecting hydrogen and the products of incomplete combustion of pyrotechnic compounds into the near wake. The experimental data obtained are generalized. 相似文献
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