Porous hybrid inorganic-organic phosphosilicate materials by
non-hydrolytic sol-gel polycondensation reactions

a 2013

Porous hybrid inorganic-organic phosphosilicate materials by non-hydrolytic sol-gel polycondensation reactions

STÝSKALÍK, Aleš, David ŠKODA, Zdeněk MORAVEC, Jiří PINKAS, Craig BARNES et. al.

Základní údaje

Originální název

Porous hybrid inorganic-organic phosphosilicate materials by non-hydrolytic sol-gel polycondensation reactions

Autoři

STÝSKALÍK, Aleš (203 Česká republika, domácí), David ŠKODA (203 Česká republika, domácí), Zdeněk MORAVEC (203 Česká republika, domácí), Jiří PINKAS (203 Česká republika, garant, domácí) a Craig BARNES (840 Spojené státy)

Vydání

The 246th ACS National Meeting, Indianapolis, Indiana, USA, 2013

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14740/13:00069405

Organizační jednotka

Středoevropský technologický institut

UT WoS

000329618404650

Klíčová slova anglicky

Porous; hybrid; inorganic-organic; phosphosilicates

Změněno: 11. 10. 2013 16:54, prof. RNDr. Jiří Pinkas, Ph.D.

Anotace

V originále

Non-hydrolytic condensation reactions became a powerful substitute for aqueous techniques in the area of sol-gel synthesis of multimetallic oxides and inorganic-organic hybrid materials in the form of xerogels, nanoparticles, and thin films. We developed a non-hydrolytic sol-gel route based on acetic acid ester elimination providing phosphosilicate hybrid inorganic-organic materials. The polycondensation reactions between Si(OAc)4 and OP(OSiMe3)3 led to microporous phosphosilicate xerogels with surface areas up to 568 m2 g-1. The consecutive substitution of Si and P precursors by acetoxysilanes 1RxSi(OC(O)CH3)4-x (1R = Me, Ph; x = 1-2) and trimethylsilylesters of phosphonic acid 2RP(O)(OSiMe3)2 (2R = c-Hex, Ph) caused the decrease of surface areas and increase of average pore sizes because of the lower cross-linking ability of the substituted precursors. We avoided a significant decrease of surface areas of hybrid xerogels by changing starting precursors to acetoxysilanes and phosphonic acid esters with bridging alkyl or aryl groups (AcO)3Si-(CH2)x-Si(OAc)3 (x = 1-3, 6), (Me3SiO)2P(O)-3R-P(O)(OSiMe3)2 (3R = C2H4, C6H4). Our aim was to study the versatility of these reactions and tune the properties of resulting xerogels, such as surface area, pore size distribution, chemical and thermal stability. The prepared xerogels were characterized by solid-state 13C, 29Si, 31P NMR, IR spectroscopy, surface area analysis, TGA, and XRD.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

LH11028, projekt VaV

Název: Nehydrolytické sol-gelové reakce pro přípravu křemičitanů a fosforečnanů s řízenou porozitou a funkčními skupinami na povrchu (Akronym: NHSGKNOX)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Nehydrolytické sol-gelové reakce pro přípravu křemičitanů a fosforečnanů s řízenou porozitou a funkčními skupinami na povrchu

Citovat

STÝSKALÍK, Aleš, David ŠKODA, Zdeněk MORAVEC, Jiří PINKAS a Craig BARNES. Porous hybrid inorganic-organic phosphosilicate materials by non-hydrolytic sol-gel polycondensation reactions. In The 246th ACS National Meeting, Indianapolis, Indiana, USA. 2013.

@proceedings{1122963,
   author = {Stýskalík, Aleš and Škoda, David and Moravec, Zdeněk and Pinkas, Jiří and Barnes, Craig},
   booktitle = {The 246th ACS National Meeting, Indianapolis, Indiana, USA},
   keywords = {Porous; hybrid; inorganic-organic; phosphosilicates},
   language = {eng},
   title = {Porous hybrid inorganic-organic phosphosilicate materials by non-hydrolytic sol-gel polycondensation reactions},
   year = {2013}
}

TY  - CONF
ID  - 1122963
AU  - Stýskalík, Aleš - Škoda, David - Moravec, Zdeněk - Pinkas, Jiří - Barnes, Craig
PY  - 2013
TI  - Porous hybrid inorganic-organic phosphosilicate materials by non-hydrolytic sol-gel polycondensation reactions
KW  - Porous
KW  - hybrid
KW  - inorganic-organic
KW  - phosphosilicates
N2  - Non-hydrolytic condensation reactions became a powerful substitute for aqueous techniques in the area of sol-gel synthesis of multimetallic oxides and inorganic-organic hybrid materials in the form of xerogels, nanoparticles, and thin films. We developed a non-hydrolytic sol-gel route based on acetic acid ester elimination providing phosphosilicate hybrid inorganic-organic materials. The polycondensation reactions between Si(OAc)4 and OP(OSiMe3)3 led to microporous phosphosilicate xerogels with surface areas up to 568 m2 g-1. The consecutive substitution of Si and P precursors by acetoxysilanes 1RxSi(OC(O)CH3)4-x (1R = Me, Ph; x = 1-2) and trimethylsilylesters of phosphonic acid 2RP(O)(OSiMe3)2 (2R = c-Hex, Ph) caused the decrease of surface areas and increase of average pore sizes because of the lower cross-linking ability of the substituted precursors. We avoided a significant decrease of surface areas of hybrid xerogels by changing starting precursors to acetoxysilanes and phosphonic acid esters with bridging alkyl or aryl groups (AcO)3Si-(CH2)x-Si(OAc)3 (x = 1-3, 6), (Me3SiO)2P(O)-3R-P(O)(OSiMe3)2 (3R = C2H4, C6H4). Our aim was to study the versatility of these reactions and tune the properties of resulting xerogels, such as surface area, pore size distribution, chemical and thermal stability. The prepared xerogels were characterized by solid-state 13C, 29Si, 31P NMR, IR spectroscopy, surface area analysis, TGA, and XRD.
ER  -

STÝSKALÍK, Aleš, David ŠKODA, Zdeněk MORAVEC, Jiří PINKAS a Craig BARNES. Porous hybrid inorganic-organic phosphosilicate materials by non-hydrolytic sol-gel polycondensation reactions. In \textit{The 246th ACS National Meeting, Indianapolis, Indiana, USA}. 2013.

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