Metallosilicate and Phosphosilicate Hybrid Materials Prepared
by Non-Hydrolytic Sol-Gel Reactions

a 2013

Metallosilicate and Phosphosilicate Hybrid Materials Prepared by Non-Hydrolytic Sol-Gel Reactions

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

Základní údaje

Originální název

Metallosilicate and Phosphosilicate Hybrid Materials Prepared by Non-Hydrolytic Sol-Gel Reactions

Autoři

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

Vydání

3rd International Conference on Multifunctional, Hybrid and Nanomaterials, Sorrento, Italy, 2013

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Itálie

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14740/13:00069400

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

Metallosilicate; Phosphosilicate; Hybrid Materials; Non-Hydrolytic; Sol-Gel

Příznaky

Mezinárodní význam

Změněno: 11. 10. 2013 17:02, prof. RNDr. Jiří Pinkas, Ph.D.

Anotace

V originále

We developed non-hydrolytic sol-gel routes to several families of metallosilicate and phosphosilicate hybrid inorganic-organic materials based on polycondensation reactions between acetoxysilanes 1RxSi(OC(O)CH3)4-x (1R = Me, Ph; n = 0-2), phosphoric and phosphonic acid trimethylsilylesters 2RP(O)(OSiMe3)2 (2R = OSiMe3, c-Hex, Ph), metal amides M(N3R2)n (M = Al, Ti; 3R = Me, Et; n = 3, 4) and metal alkoxides M(O4R)n (M = Al, Ti; 4R = i-Pr, t-Bu, SiMe3; n = 3, 4) in aprotic dry solvents. Alumosilicate xerogels were prepared by polycondensation reactions between Al(NMe2)3 or Al(Oi-Pr)3 and acetoxysilanes. These elimination reactions led to the formation of Si-O-Al networks and released dimethylacetamide or acetic acid ester and as byproducts, respectively. Titanosilicate xerogels were prepared by non-hydrolytic polycondensation reactions between Ti amides Ti(NR2)4 (R = Me, Et) or Ti alkoxides Ti(OR)4 (R = i-Pr, t-Bu, SiMe3) and acetoxysilanes. The acetamide and ester elimination reactions led to Si-O-Ti networks. Phosphosilicates were prepared by the elimination of acetic acid ester from acetoxysilanes and trimethylsilyl phosphates and phosphonates. Two-step sequential polycondensation procedure was used to prepare metallosilicophosphates. The inorganic-organic hybrid xerogels contained residual surface organic groups that were employed for the chemical modification reactions on the surface by a variety of reagents, such as alcohols, chlorosilanes, metal alkyls and chlorides. Our aim was to study the versatility of these reactions, attain stoichiometry control, and tune the properties of resulting xerogels, such as surface area and Bronsted/Lewis acidity. The prepared xerogels were characterized by solid-state 13C, 27Al, 29Si, 31P NMR, IR, surface area analysis, TGA, XANES/EXAFS, 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

PINKAS, Jiří, Aleš STÝSKALÍK, David ŠKODA, Zdeněk MORAVEC a Craig BARNES. Metallosilicate and Phosphosilicate Hybrid Materials Prepared by Non-Hydrolytic Sol-Gel Reactions. In 3rd International Conference on Multifunctional, Hybrid and Nanomaterials, Sorrento, Italy. 2013.

@proceedings{1122955,
   author = {Pinkas, Jiří and Stýskalík, Aleš and Škoda, David and Moravec, Zdeněk and Barnes, Craig},
   booktitle = {3rd International Conference on Multifunctional, Hybrid and Nanomaterials, Sorrento, Italy},
   keywords = {Metallosilicate; Phosphosilicate; Hybrid Materials; Non-Hydrolytic; Sol-Gel},
   language = {eng},
   title = {Metallosilicate and Phosphosilicate Hybrid Materials Prepared by Non-Hydrolytic Sol-Gel Reactions},
   year = {2013}
}

TY  - CONF
ID  - 1122955
AU  - Pinkas, Jiří - Stýskalík, Aleš - Škoda, David - Moravec, Zdeněk - Barnes, Craig
PY  - 2013
TI  - Metallosilicate and Phosphosilicate Hybrid Materials Prepared by Non-Hydrolytic Sol-Gel Reactions
KW  - Metallosilicate
KW  - Phosphosilicate
KW  - Hybrid Materials
KW  - Non-Hydrolytic
KW  - Sol-Gel
N2  - We developed non-hydrolytic sol-gel routes to several families of metallosilicate and phosphosilicate hybrid inorganic-organic materials based on polycondensation reactions between acetoxysilanes 1RxSi(OC(O)CH3)4-x (1R = Me, Ph; n = 0-2), phosphoric and phosphonic acid trimethylsilylesters 2RP(O)(OSiMe3)2 (2R = OSiMe3, c-Hex, Ph), metal amides M(N3R2)n (M = Al, Ti; 3R = Me, Et; n = 3, 4) and metal alkoxides M(O4R)n (M = Al, Ti; 4R = i-Pr, t-Bu, SiMe3; n = 3, 4) in aprotic dry solvents. Alumosilicate xerogels were prepared by polycondensation reactions between Al(NMe2)3 or Al(Oi-Pr)3 and acetoxysilanes. These elimination reactions led to the formation of Si-O-Al networks and released dimethylacetamide or acetic acid ester and as byproducts, respectively. Titanosilicate xerogels were prepared by non-hydrolytic polycondensation reactions between Ti amides Ti(NR2)4 (R = Me, Et) or Ti alkoxides Ti(OR)4 (R = i-Pr, t-Bu, SiMe3) and acetoxysilanes. The acetamide and ester elimination reactions led to Si-O-Ti networks. Phosphosilicates were prepared by the elimination of acetic acid ester from acetoxysilanes and trimethylsilyl phosphates and phosphonates. Two-step sequential polycondensation procedure was used to prepare metallosilicophosphates. The inorganic-organic hybrid xerogels contained residual surface organic groups that were employed for the chemical modification reactions on the surface by a variety of reagents, such as alcohols, chlorosilanes, metal alkyls and chlorides. Our aim was to study the versatility of these reactions, attain stoichiometry control, and tune the properties of resulting xerogels, such as surface area and Bronsted/Lewis acidity. The prepared xerogels were characterized by solid-state 13C, 27Al, 29Si, 31P NMR, IR, surface area analysis, TGA, XANES/EXAFS, and XRD.
ER  -

PINKAS, Jiří, Aleš STÝSKALÍK, David ŠKODA, Zdeněk MORAVEC a Craig BARNES. Metallosilicate and Phosphosilicate Hybrid Materials Prepared by Non-Hydrolytic Sol-Gel Reactions. In \textit{3rd International Conference on Multifunctional, Hybrid and Nanomaterials, Sorrento, Italy}. 2013.

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