SYNTHETIC MEYKSNERITE PRODUCT (VERSIONS) AND METHOD OF PREPARATION THEREOF Russian patent published in 2000 - IPC

FIELD: inorganic synthesis. SUBSTANCE: product is prepared by mixing magnesium oxide and transition aluminum oxide in essentially carbonate-free aqueous suspension and has level of carbonate contamination close to 1 wt % (expressed as inorganic carbon) or less and is characterized by X-ray diffraction pattern similar to that presented in description. Preparation of layered double hydroxide includes reaction of at least one bivalent metal oxide with trivalent metal oxide in essentially carbonate-free aqueous solution and separation of product from solution. Preparation of synthetic meyksnerite product includes reaction of magnesium oxide powder and transition aluminum oxide with highly developed surface area in essentially carbonate-free aqueous solution. EFFECT: enabled preparation of compound analogous to hydrotalcite and having significantly higher levels of carbonate and practically no other anionic impurities. 14 cl, 1 dwg, 1 tbl, 3 ex