METHOD OF PREPARING GADOLINIUM OXIDE
chemical industry, more particularly preparation of gadolinium oxide from gadolinium-containing organic mixtures. SUBSTANCE: organic mixture containing gadolinium oxide is boiled in hydrochloric acid at 100-110 C for 4 hours. The filtered suspension is maintained in the presence of oxalic acid at 85...
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creator | MONASTYREV JU.A POLJAKOV L.A PASHINA O.V NIKITIN E.V |
description | chemical industry, more particularly preparation of gadolinium oxide from gadolinium-containing organic mixtures. SUBSTANCE: organic mixture containing gadolinium oxide is boiled in hydrochloric acid at 100-110 C for 4 hours. The filtered suspension is maintained in the presence of oxalic acid at 85-95 C till complete precipitation. Precipitated powder is filtered, dried at 180-190 for 5 or 6 hours and calcined at 900-930 C for 3.5-4.5 hours. Method makes it possible to prepare expensive gadolinium oxide from utilized waste and use it once again. EFFECT: more efficient preparation method. 3 cl, 1 tbl |
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SUBSTANCE: organic mixture containing gadolinium oxide is boiled in hydrochloric acid at 100-110 C for 4 hours. The filtered suspension is maintained in the presence of oxalic acid at 85-95 C till complete precipitation. Precipitated powder is filtered, dried at 180-190 for 5 or 6 hours and calcined at 900-930 C for 3.5-4.5 hours. Method makes it possible to prepare expensive gadolinium oxide from utilized waste and use it once again. 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SUBSTANCE: organic mixture containing gadolinium oxide is boiled in hydrochloric acid at 100-110 C for 4 hours. The filtered suspension is maintained in the presence of oxalic acid at 85-95 C till complete precipitation. Precipitated powder is filtered, dried at 180-190 for 5 or 6 hours and calcined at 900-930 C for 3.5-4.5 hours. Method makes it possible to prepare expensive gadolinium oxide from utilized waste and use it once again. EFFECT: more efficient preparation method. 3 cl, 1 tbl</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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subjects | CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS INORGANIC CHEMISTRY METALLURGY |
title | METHOD OF PREPARING GADOLINIUM OXIDE |
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