RU94026992A - Method of preparing thin-layer inorganic sorbents
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Method of preparing thin-layer inorganic sorbents
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RU94026992A
RU94026992ARU94026992/26ARU94026992ARU94026992ARU 94026992 ARU94026992 ARU 94026992ARU 94026992/26 ARU94026992/26 ARU 94026992/26ARU 94026992 ARU94026992 ARU 94026992ARU 94026992 ARU94026992 ARU 94026992A
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Application filed by Институт химии Дальневосточного отделения РАНfiledCriticalИнститут химии Дальневосточного отделения РАН
Priority to RU94026992/26ApriorityCriticalpatent/RU2075170C1/en
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Publication of RU2075170C1publicationCriticalpatent/RU2075170C1/en
Solid-Sorbent Or Filter-Aiding Compositions
(AREA)
Abstract
FIELD: production of sorbents. SUBSTANCE: sorbents used for analytical and medical purposes, for fine cleaning of solutions, extraction of metals from industrial and household wastes, sea water, etc. are prepared through electrochemical precipitation of titanium or zirconium hydroxide onto porous carbon material from solution containing titanium or zirconium salt with metal concentration 100-5000 mg/l in 0.1 M solution of sulfuric acid and/or magnesium sulfate or sodium chloride. In this case, carbon material is charged to potential values distanced from stationary dipping potentials by -0.1 to -0.9 V with velocity 0.04- 0.1 mV/s and maintained at reached potential during 1-4 h. In a particular case, precipitation of titanium hydroxide is conducted in presence of hydrogen peroxide. EFFECT: enabled controlling precipitation process in electrode layer and thereby controlling uniform precipitation of hydroxide film on carrier surface. 4 cl, 1 tbl, 14 ex
Claims (1)
Использование: для получения сорбентов, используемых в аналитических и медицинских целях, для глубокой очистки растворов, извлечения металлов из промышленных и бытовых стоков, морской воды и т.д. Сущность изобретения: сорбент получают путем электрохимического осаждения гидроксида титана или циркония на пористый углеродный материал из раствора, содержащего соль титана или циркония с концентрацией металла 100 - 5000 мг/л в 0,1 М растворе электролита K2SO4 и/или MgSO4 или NaCl. При этом углеродный материал заряжают до значений потенциалов, отстоящих от стационарных потенциалов погружения на (-0,1) - (-0,9) в со скоростью 0,04 - 0,1 мв/с и выдерживают при достигнутом в этом интервале значении потенциала в течение 1 - 4 ч. В частном случае осаждение гидроокиси титана ведут в присутствии пероксида водорода. Способ позволяет контролировать проведение процесса осаждения в приэлектродном слое и таким образом регулировать равномерное осаждение пленки гидроксида на поверхности носителя.Usage: to obtain sorbents used for analytical and medical purposes, for deep purification of solutions, extraction of metals from industrial and domestic wastewater, sea water, etc. The inventive sorbent is obtained by electrochemical deposition of titanium or zirconium hydroxide on porous carbon material from a solution containing a titanium or zirconium salt with a metal concentration of 100-5000 mg / l in a 0.1 M solution of electrolyte K 2 SO 4 and / or MgSO 4 or NaCl. In this case, the carbon material is charged to potential values that are separated from the stationary immersion potentials by (-0.1) - (-0.9) in at a rate of 0.04 - 0.1 mV / s and can withstand the potential value reached in this interval within 1 to 4 hours. In the particular case, the precipitation of titanium hydroxide is carried out in the presence of hydrogen peroxide. The method allows you to control the deposition process in the near-electrode layer and thus regulate the uniform deposition of a hydroxide film on the surface of the carrier.
RU94026992/26A1994-07-181994-07-18
METHOD FOR PRODUCING THIN LAYER INORGANIC SORBENTS
RU2075170C1
(en)
"AN ELECTROLYSIS CELL DEVICE FOR STERILIZATION THROUGH HYPOCHLORITE SOLUTIONS FOR DRINKING WATER, CONSUMPTION WATER, WASTE WATER AND COOLING WATER".
METHOD FOR REGENERATING IRON-BASED SOLID SOLUTIONS FOR USE IN THE PAINTING OR REFURBISHING OF COPPER OR COPPER ALLOYS AND DEVICE FOR CARRYING OUT THE METHOD