Features of the Sorptive Extraction of Osmium in Different Oxidation States with Silica Gels Chemically Modified with Mercapto and Disulfide Groups

Лосев, В. Н.; Kudrina, Yu. V.; Трофимчук, А. К.; Komozin, P. N.

doi:10.1023/b:janc.0000030875.65147.7c

Cited by 3 publications

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“…The distinctive features of sorption separation of osmium in different oxidation states (IV, VI, VIII) by modified silica gels 1 and 2 were reported. 22 It was suggested based on the results that the reaction of osmium with sulfur-containing ligands grafted on the silica gel surface gives first a coordination compound of osmium in one of the highest oxidation states (Os VI ). Then osmium is reduced to Os IV and further to Os II within the coordination compound if an adsorbent with thiol groups is used.…”

Section: Adsorbents Based On Covalently Modified Silicasmentioning

confidence: 99%

Organosilicon ion-exchange and complexing adsorbents

Власова¹,

Оборина²,

Grigoryeva³

et al. 2013

Russ. Chem. Rev.

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Data on the ion-exchange and complexing orga-Data on the ion-exchange and complexing organosilicon adsorbents published during the last 10 ± 12 years, nosilicon adsorbents published during the last 10 ± 12 years, including the results of systematic research of the authors, including the results of systematic research of the authors, are summarized and analyzed. The following types of are summarized and analyzed. The following types of substances are considered: silicas with covalently grafted substances are considered: silicas with covalently grafted modifiers, silicas and aluminosilicates with non-covalently modifiers, silicas and aluminosilicates with non-covalently grafted modifiers and carbofunctional polyorganylsilses-grafted modifiers and carbofunctional polyorganylsilsesquioxanes prepared by polycondensation of appropriate quioxanes prepared by polycondensation of appropriate organosilicon monomers. Adsorbents of these types find organosilicon monomers. Adsorbents of these types find extensive practical use, in particular, as analytical reagents extensive practical use, in particular, as analytical reagents for determination of metals in natural and artificial speci-for determination of metals in natural and artificial specimens, agents for isolation of valuable elements from indus-mens, agents for isolation of valuable elements from industrial wastes and agents for removal of especially hazardous trial wastes and agents for removal of especially hazardous components from wastes and effluents. The bibliography components from wastes and effluents. The bibliography includes 109 references includes 109 references. .

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Section: Adsorbents Based On Covalently Modified Silicasmentioning

confidence: 99%