JPH0232217B

PURPOSE:To develop a manganese compound having approprimately the same X-ray diffraction characteristics as that of LiMn2O4 and improved selectively adsorption to Li in the sea, by treating MgMn2O4 with an acidic solution to elute magnesium. CONSTITUTION:Hydroxide, oxide, carbonate, bicarbonate, nit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KATO SHUNSAKU, OOI KENTA, MYAI YOSHITAKA
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM ELECTRICITY INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PURPOSE:To develop a manganese compound having approprimately the same X-ray diffraction characteristics as that of LiMn2O4 and improved selectively adsorption to Li in the sea, by treating MgMn2O4 with an acidic solution to elute magnesium. CONSTITUTION:Hydroxide, oxide, carbonate, bicarbonate, nitrate, halide, etc., of magnesium is blended with hydroxide, oxide, carbonate, bicarbonate, nitrate, halide, etc., of manganese in a proper ratio and heated at >=400 deg.C to give MgMn2O4, which is treated with an acidic aqueous solution which contains at least one of mineral acid such as hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, etc., and organic acid such as formic acid, acetic acid, etc., and has pH