Characterization of two low-charge vermiculites after hydrochloric acid treatment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F15%3A86095603" target="_blank" >RIV/61989100:27360/15:86095603 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27740/15:86095603 RIV/61989100:27640/15:86095603

Výsledek na webu

<a href="https://www.irsm.cas.cz/materialy/acta_content/2015_doi/Kupkova_AGG_2015_0027.pdf" target="_blank" >https://www.irsm.cas.cz/materialy/acta_content/2015_doi/Kupkova_AGG_2015_0027.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.13168/AGG.2015.0027" target="_blank" >10.13168/AGG.2015.0027</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of two low-charge vermiculites after hydrochloric acid treatment

Popis výsledku v původním jazyce

Two natural vermiculites (Ver) with very similar chemical composition but slightly different low charge on the layers were investigated to find an answer the question, how to change their structural and chemical properties after exposure to different concentrations of HCl solutions. Vermiculite from Bulgaria (Ver-B) with the layer charge 0.47 eq/O10(OH)2 and from Brazil (Ver-SL) with the layer charge 0.36 eq/O10(OH)2 were studied on their particle size fraction less than 40 ?m after treatment at different HCl concentrations (0.5 M HCl and 1 M HCl). Both samples represent a mixed-layer structure after incomplete transformation of mica (biotite) to vermiculite. Based on the XRD patterns, Ver-B may be considered as the mixed-layer vermiculite interstratified with small proportion of mica layers and Ver-SL as the mixed-layer mica-vermiculite. The leaching with 0.5 M HCl increased SA of Ver-B from 29.5 m2.g-1 to 261 m2.g-1 at Ver-B05 in comparison with the SA of Ver-SL from 14.0 m2.g-1 to 1

Název v anglickém jazyce

Characterization of two low-charge vermiculites after hydrochloric acid treatment

Popis výsledku anglicky

Two natural vermiculites (Ver) with very similar chemical composition but slightly different low charge on the layers were investigated to find an answer the question, how to change their structural and chemical properties after exposure to different concentrations of HCl solutions. Vermiculite from Bulgaria (Ver-B) with the layer charge 0.47 eq/O10(OH)2 and from Brazil (Ver-SL) with the layer charge 0.36 eq/O10(OH)2 were studied on their particle size fraction less than 40 ?m after treatment at different HCl concentrations (0.5 M HCl and 1 M HCl). Both samples represent a mixed-layer structure after incomplete transformation of mica (biotite) to vermiculite. Based on the XRD patterns, Ver-B may be considered as the mixed-layer vermiculite interstratified with small proportion of mica layers and Ver-SL as the mixed-layer mica-vermiculite. The leaching with 0.5 M HCl increased SA of Ver-B from 29.5 m2.g-1 to 261 m2.g-1 at Ver-B05 in comparison with the SA of Ver-SL from 14.0 m2.g-1 to 1

Druh

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

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Acta Geodynamica et Geomaterialia

ISSN

1214-9705

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

299 - 306

Kód UT WoS článku

000362932600009

EID výsledku v databázi Scopus

2-s2.0-84942109755