Synthesis of a manganese dioxide-silica hydrous composite and its properties as a sorbtion material for strontium

Journal Article · Tue Jan 01 04:00:00 EST 1991 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00049a031· OSTI ID:6067069

White, D A; Labayru, R ^[1]

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1. Nuclear Technology Section, Dept. of Chemical Engineering, Imperial College, London SW7 2BY (GB)

This paper reports on hydrous manganese dioxide prepared by precipitation of MnO{sub 2} from potassium permanganate with H{sub 2}O{sub 2}. The reaction was carried out in the presence of SiO{sub 2} as sodium silicate. Afterward the precipitate was dewatered, washed, and dried. The resultant materials were tested for strontium sorption as a function of MnO{sub 2}:SiO{sub 2} content and as a function of drying temperature. A product containing 17% SiO{sub 2} in the initial solution was shown to be the best for Sr adsorption. The mechanical strength, density, capacity, and water stability of the exchangers were determined. Their properties were compared with a grade of MnO{sub 2} available commercially. Addition of SiO{sub 2} had several advantages.

• OSTI ID: 6067069
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Journal Name: Industrial and Engineering Chemistry Research; (United States) Vol. 30:1; ISSN IECRE; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
400201 -- Chemical & Physicochemical Properties
ADSORPTION
ALKALI METAL COMPOUNDS
ALKALINE EARTH METALS
ALLOYS
CHALCOGENIDES
COMPOSITE MATERIALS
ELEMENTS
MANGANESE COMPOUNDS
MANGANESE OXIDES
MATERIALS
METALS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
SILICATES
SILICON ADDITIONS
SILICON ALLOYS
SILICON COMPOUNDS
SODIUM COMPOUNDS
SODIUM SILICATES
SORPTION
SORPTIVE PROPERTIES
STRONTIUM
SURFACE PROPERTIES
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS