Pore ordering in mesoporous matrices induced by different directing agents

Result code in 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>
Result on the web
<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>

Result language
angličtina
Original language name
Pore ordering in mesoporous matrices induced by different directing agents
Original language description
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
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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