Sorption of hydrogen sulfide by VION anion-exchange fibres

Бараш, А. Н.; Zverev, M. P.; Malinovskii, E.K.; Kalyanova, N. F.

doi:10.1007/bf00547139

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“…The sorption of hydrogen sulfide on anion-exchange resins in the OH-form follows the mechanism of the usual neutralization reaction [17]. The sulfide form thus formed can additionally absorb an equimolar amount of H 2 S [40,64]: 44) Weakly basic anion-exchangers under dynamic conditions practically do not absorb hydrogen sulfide, because its aqueous solution is a too weak acid (pK a1 = 7.02, pK a2 = 12.20 ÷ 15.00 at 25 °C [65]), so only strongly basic anion-exchangers are used. Hydrogen sulfide also be sorbed with strongly basic and weakly basic cation-exchangers in salt form with 3d metals (for example, Cu 2+ , Ni 2+ , Co 2+ , Cd 2+ , Zn 2+ ) [66], forming with it sparingly soluble sulfides, firmly held by the spatial matrix of chemisorbent:…”

Section: Sorption Of Hydrocyanic Acidmentioning

confidence: 99%

Non-Woven Ion-Exchange Fibrous Materials in Air Sanitary Cleaning

2021

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The review is devoted to non-woven sorption-filtering materials (NSFM) widely used equipment for gas cleaning from toxic gaseous and vaporous substances. The use of ion-exchange fibrous materials (IFM) as NSFM and the peculiarities of their preparation and structure have been analyzed. A lot of attention is paid to the mechanisms of chemisorption processes using IFM and to the role of water in their successful implementation. Individual options and some regularities of fibrous anionites, cationites, and polyampholytes interaction due to exchange reactions, neutralization, reduction-oxidation, complexation and precipitation with gaseous and vaporous substances are considered on specific examples.

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Section: Sorption Of Hydrocyanic Acidmentioning

confidence: 99%