The morphological changes accompanying the conversion of the hexagonal CaO·Al2O3·10H2O phase to the cubic 3CaO·Al2O3·6H2O phase were studied by scanning electron microscopy. The hydration and conversion reactions were monitored by X-ray diffraction analysis. From the micrographs, it was ...
新法铝热炼镁工艺获得金属镁的同时得到富含CaO·2Al2O3的还原渣(含少量Al、MgO及其他不溶性杂质),利用该还原渣可提取高附加值的高白氢氧化铝产品,其工艺流程如下:回答下列问题:(1)浸出时所加试剂NaOH的电子式为___,分离操作的名称为___。(2)浸出时的主要反应生成NaAl(OH)4的化学方程式为___。(3)...
硼及其化合物在工业上有许多用途。以铁硼矿(主要成分为Mg2B2O5·H2O和Fe3O4,还有少量Fe2O3、FeO、CaO、Al2O3和SiO2等)为原料制备硼酸(H3BO3)的工艺流程如图所示:
Phase relations in the system Na2O· Al2O3-CaO· Al2O3-Al2O3 at 1200°C in air were determined using the quenching method and high-temperature X-ray diffraction. The compound 2Na2O · 3CaO · 5Al2O3, known from the literature, was reformulated as Na2O · CaO · 2Al2O3. A new...
J. MATER. CHEM., 1994, 4(2), 265-269 265 Studies of Model Macroscopic-defect-free Materials Part 1.-Investigations of the System 4Ca0 AI,O, Fe2O,-4CaO 3AI,O, SO,-hprnc-H,O by X-ray, Thermoanalytical and NMR Techniques Milan Drabik," Lubica Galikova," Maria Kubranova" and ...
doi:10.1002/zfch.19890290922No abstract is available for this article.Geßner WolfgangMüller DirkWiley‐VCH Verlag GmbH & Co. KGaAZeitschrift Für Chemie
structure (solids and liquidsaluminum, Alsilicon, Sicalcium, CaGESSNER, WZentralinst. Anorg. Chem., Akad. Wiss. DDR, DDR‐1199 BerlinMUELLER, DZentralinst. Anorg. Chem., Akad. Wiss. DDR, DDR‐1199 BerlinWILEY‐VCH Verlag GmbHCheminform...
doi:10.1111/j.1151-2916.1929.tb18023.xZimmer, David CNeff, John MBlackwell Publishing LtdJournal of the American Ceramic Society
12CaO·7Al 2 O 3 (C12A7) composed of nanosize cage structure can clathrate oxygen radicals (O ) and has a high potential to application of strong oxidizing catalysis. In the present report, we demonstrate a fabrication route to C12A7 fine powders by Chemical Solution Deposition method in ...