Preparation of phosphate-based geopolymer from calcined bentonite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F25%3A00390097" target="_blank" >RIV/68407700:21110/25:00390097 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1742-6596/3146/1/012028" target="_blank" >http://dx.doi.org/10.1088/1742-6596/3146/1/012028</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/3146/1/012028" target="_blank" >10.1088/1742-6596/3146/1/012028</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation of phosphate-based geopolymer from calcined bentonite

Popis výsledku v původním jazyce

Acid based geopolymers (ABG) are less known counterpart to alkali-activated materials. Usually, metakaolin is activated by phosphoric acid to “acid geopolymer” or “phosphate geopolymer”. These materials are studied since their potential high thermal and chemical stability. Unfortunately, ABG prepared from metakaolin requires thermal treatment at 60 °C to become solid since the activation reaction kinetics is highly dependent on the temperature. Moreover, the sources of kaolin are rather limited. For that reasons, alternative aluminosilicate precursors deserve the attention. Bentonite is quite common rock composed mostly from montmorillonite. In this study, thermally (650 °C) activated bentonite was used as precursor for acid activation. The precursor was activated by phosphoric acid in amount adjusted to prepare samples with Al/P molar ratio between 1 and 2. The relatively best compressive strength reached sample with Al/P 1.5. However, the achieved strength was low compared to acid activated metakaolin.

Název v anglickém jazyce

Preparation of phosphate-based geopolymer from calcined bentonite

Popis výsledku anglicky

Acid based geopolymers (ABG) are less known counterpart to alkali-activated materials. Usually, metakaolin is activated by phosphoric acid to “acid geopolymer” or “phosphate geopolymer”. These materials are studied since their potential high thermal and chemical stability. Unfortunately, ABG prepared from metakaolin requires thermal treatment at 60 °C to become solid since the activation reaction kinetics is highly dependent on the temperature. Moreover, the sources of kaolin are rather limited. For that reasons, alternative aluminosilicate precursors deserve the attention. Bentonite is quite common rock composed mostly from montmorillonite. In this study, thermally (650 °C) activated bentonite was used as precursor for acid activation. The precursor was activated by phosphoric acid in amount adjusted to prepare samples with Al/P molar ratio between 1 and 2. The relatively best compressive strength reached sample with Al/P 1.5. However, the achieved strength was low compared to acid activated metakaolin.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA24-11171S" target="_blank" >GA24-11171S: Kysele aktivované geopolymery na bázi jílových prekurzorů: příprava, struktura, environmentální zhodnocení</a><br>

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název statě ve sborníku

Journal of Physics: Conference Series 3146

ISBN

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ISSN

1742-6588

e-ISSN

1742-6596

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

IOP Publishing Ltd.

Místo vydání

Bristol

Místo konání akce

Krynica-Zdroj

Datum konání akce

3. 9. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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