About: Interphase Mobility and Migration of Hydrophobic Organic Metal Extractant Molecules in Solvent Impregnated Resins.

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About: Interphase Mobility and Migration of Hydrophobic Organic Metal Extractant Molecules in Solvent Impregnated Resins. Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Solvent-impregnated resins (SIRs) were made from polyvinyl pyridine and polyvinyl benzyl ammonium types of ionic polymers by impregnation of thiophosphoric acid type extractants. Morphological and nuclear magnetic resonance (NMR) studies were performed to observe the physical migration of the extractants under variation of two chemical factors: acidity and metal concentration. Morphological (surface area) measurements of the SIR-type polymer reveal surface area and pore-volume reduction upon metal-ion complexation and/or decreasing pH value. NMR measurements clearly show state variations of the extractant from a 'solid' type state in the gel phase into a 'liquid' state in the macropore phase. This phenomenon of migration of water-immiscible organic acids in response to pH changes of the external aqueous phase in SIRs, resembles a 'smart' polymer in which large and sharp physical changes occur in response to a chemical stimulous. The discovery of the migration phenomena leads to a new unit operation de Solvent-impregnated resins (SIRs) were made from polyvinyl pyridine and polyvinyl benzyl ammonium types of ionic polymers by impregnation of thiophosphoric acid type extractants. Morphological and nuclear magnetic resonance (NMR) studies were performed to observe the physical migration of the extractants under variation of two chemical factors: acidity and metal concentration. Morphological (surface area) measurements of the SIR-type polymer reveal surface area and pore-volume reduction upon metal-ion complexation and/or decreasing pH value. NMR measurements clearly show state variations of the extractant from a 'solid' type state in the gel phase into a 'liquid' state in the macropore phase. This phenomenon of migration of water-immiscible organic acids in response to pH changes of the external aqueous phase in SIRs, resembles a 'smart' polymer in which large and sharp physical changes occur in response to a chemical stimulous. The discovery of the migration phenomena leads to a new unit operation de (en)
Title	Interphase Mobility and Migration of Hydrophobic Organic Metal Extractant Molecules in Solvent Impregnated Resins. Interphase Mobility and Migration of Hydrophobic Organic Metal Extractant Molecules in Solvent Impregnated Resins. (en)
skos:prefLabel	Interphase Mobility and Migration of Hydrophobic Organic Metal Extractant Molecules in Solvent Impregnated Resins. Interphase Mobility and Migration of Hydrophobic Organic Metal Extractant Molecules in Solvent Impregnated Resins. (en)
skos:notation	RIV/67985858:_____/02:27020262!RIV/2003/AV0/A27003/N
http://linked.open.../vavai/riv/strany	2607;2622
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA104/96/0582), Z(AV0Z4072921)
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Jeřábek, Karel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav chemických procesů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	649559
http://linked.open...ai/riv/idVysledku	RIV/67985858:_____/02:27020262
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	polymers; reagents (en)
http://linked.open.../riv/klicoveSlovo	polymers reagents
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[6DEC22B8A2D3]
http://linked.open...i/riv/nazevZdroje	Separation Science and Technology
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Heterogenized selective ligands for separation of heavy metals
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	37
http://linked.open...iv/tvurceVysledku	Jeřábek, Karel Strikovsky, A. G. Warshawsky, A. Vilensky, M. Y.
http://linked.open...n/vavai/riv/zamer	Theoretical fundamentals of chemical processes: equilibrium and dynamic behavior of multiphase reacting systems
issn	0149-6395
number of pages	16 (xsd:int)

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