Pore ordering in mesoporous matrices induced by different directing agents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F15%3A00443214" target="_blank" >RIV/61388980:_____/15:00443214 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s10934-014-9899-z" target="_blank" >http://dx.doi.org/10.1007/s10934-014-9899-z</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10934-014-9899-z" target="_blank" >10.1007/s10934-014-9899-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Pore ordering in mesoporous matrices induced by different directing agents

Popis výsledku v původním jazyce

Mesoporous silica particles of MCM-41 type were synthesized by sol-gel method from tetraethyl orthosilicate in 2-methoxyethanol and deionized water mixture in base conditions at room temperature. Ammonia or sodium hydroxides were used as catalysts and cetyl-trimethylammonium bromide and n-dodecyl-trimethylammonium bromide as structure directing agents. The porosities and the ordered structure have been analyzed using transmission and scanning electron microscopy, small angle neutron and X-ray diffraction, nitrogen adsorption, thermal analysis and FTIR spectroscopy. The samples consist of spherical particles of sub-micrometer size, with radially arranged pores. The comparison of the effect of the different surfactants and catalysts shows that by varyingthe surfactant type and their proportion, the pore sizes can be controlled. As compared to the commonly used ammonia catalyst, the use of NaOH as catalyst results in a much smaller porosity of the as-prepared materials. These materials a

Název v anglickém jazyce

Pore ordering in mesoporous matrices induced by different directing agents

Popis výsledku anglicky

Mesoporous silica particles of MCM-41 type were synthesized by sol-gel method from tetraethyl orthosilicate in 2-methoxyethanol and deionized water mixture in base conditions at room temperature. Ammonia or sodium hydroxides were used as catalysts and cetyl-trimethylammonium bromide and n-dodecyl-trimethylammonium bromide as structure directing agents. The porosities and the ordered structure have been analyzed using transmission and scanning electron microscopy, small angle neutron and X-ray diffraction, nitrogen adsorption, thermal analysis and FTIR spectroscopy. The samples consist of spherical particles of sub-micrometer size, with radially arranged pores. The comparison of the effect of the different surfactants and catalysts shows that by varyingthe surfactant type and their proportion, the pore sizes can be controlled. As compared to the commonly used ammonia catalyst, the use of NaOH as catalyst results in a much smaller porosity of the as-prepared materials. These materials a

Druh

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

CEP obor

CA - Anorganická chemie

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Porous Materials

ISSN

1380-2224

e-ISSN

—

Svazek periodika

22

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

321-331

Kód UT WoS článku

000350891300003

EID výsledku v databázi Scopus

2-s2.0-84925506510