Kenyaite; synthesis and properties

摘要: Hydrous sodium silicate, synthesis from aqueous suspensions containing SiO 2 and NaOH with /NaOH ratios ranging 5 to 20 H O/NaOH 50 500 at 100-150 degrees C. Transformation: magadiite --> kenyaite quartz. Formation of 100 C requires several months; reaction times decreased higher temperatures but quartz forms rapidly. Synthetic kenyaites form spherical aggregates well-developed plates. Intracrystalline reactivity. Through exchange protons for the interlayer ions, is transformed into a crystalline silicic acid.--Modified journal abstract.