Synthesis and Characterization of Nanostructured Sulfated Zirconias

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F10%3A00338944" target="_blank" >RIV/67985858:_____/10:00338944 - 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

Synthesis and Characterization of Nanostructured Sulfated Zirconias

Popis výsledku v původním jazyce

Thermally stable sulfated zirconia catalysts were synthesized via a templating procedure and compared with standard zirconia materials prepared by precipitation without templates. Two preparation routes with various amphiphilic systems were employed as structure directing agents: synthesis with hexadecyltrimethyl ammonium bromide, and combined use of surfactant Brij-(A (R)) and triblock-copolymer Pluronic P123(A (R)). The formation of materials was characterized by use of TEM, SEM, X-ray diffraction aswell as nitrogen adsorption and mercury intrusion techniques. Different self-assembling properties of the structure directing compounds led to sulfated zirconia materials exhibiting improved morphological and structural properties in terms of thermal stability, specific surface areas, pore diameters and porosity factors. Notably, hierarchical pore structures were obtained for the synthesis route via a combined use of Brij-56(A (R)) and P123(A (R)).

Název v anglickém jazyce

Synthesis and Characterization of Nanostructured Sulfated Zirconias

Popis výsledku anglicky

Thermally stable sulfated zirconia catalysts were synthesized via a templating procedure and compared with standard zirconia materials prepared by precipitation without templates. Two preparation routes with various amphiphilic systems were employed as structure directing agents: synthesis with hexadecyltrimethyl ammonium bromide, and combined use of surfactant Brij-(A (R)) and triblock-copolymer Pluronic P123(A (R)). The formation of materials was characterized by use of TEM, SEM, X-ray diffraction aswell as nitrogen adsorption and mercury intrusion techniques. Different self-assembling properties of the structure directing compounds led to sulfated zirconia materials exhibiting improved morphological and structural properties in terms of thermal stability, specific surface areas, pore diameters and porosity factors. Notably, hierarchical pore structures were obtained for the synthesis route via a combined use of Brij-56(A (R)) and P123(A (R)).

Druh

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

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Journal of Sol-Gel Science and Technology

ISSN

0928-0707

e-ISSN

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Svazek periodika

53

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

000273592700002

EID výsledku v databázi Scopus

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