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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F02%3A27020262" target="_blank" >RIV/67985858:_____/02:27020262 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 u

Název v anglickém jazyce

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

Popis výsledku anglicky

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 u

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F96%2F0582" target="_blank" >GA104/96/0582: Heterogenizované selektivní ligandy pro separaci těžkých kovů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2002

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Separation Science and Technology

ISSN

0149-6395

e-ISSN

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Svazek periodika

37

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

2607-2622

Kód UT WoS článku

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EID výsledku v databázi Scopus

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