Synthesis of aluminophosphate xerogels by non-hydrolytic
sol-gel condensation of EtAlCl2 with trialkylphosphates

J 2019

Synthesis of aluminophosphate xerogels by non-hydrolytic sol-gel condensation of EtAlCl2 with trialkylphosphates

PODHORSKÝ, Ján, Jan CHYBA, Jiří PINKAS a Zdeněk MORAVEC

Základní údaje

Originální název

Synthesis of aluminophosphate xerogels by non-hydrolytic sol-gel condensation of EtAlCl2 with trialkylphosphates

Autoři

PODHORSKÝ, Ján (703 Slovensko, domácí), Jan CHYBA (203 Česká republika, domácí), Jiří PINKAS (203 Česká republika, garant, domácí) a Zdeněk MORAVEC (203 Česká republika, domácí)

Vydání

Journal of Sol-Gel Science and Technology, NEW YORK, SPRINGER, 2019, 0928-0707

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.008

Kód RIV

RIV/00216224:14310/19:00109490

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1007/s10971-019-04953-0

UT WoS

000473156200015

Klíčová slova anglicky

Mesoporous xerogels; Aluminium phosphate; Non-hydrolytic synthesis; Sol-gel processing; Alkylhalide elimination mechanism

Štítky

CF CRYO, CF SAXS, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 10. 2024 11:47, Ing. Marie Švancarová

Anotace

V originále

We have investigated the preparation of high-surface-area mesoporous aluminophosphates by non-hydrolytic sol-gel method based on reactions of EtAlCl2 with trialkylesters of phosphoric acid (OP(OR)(3), R=Me, Et, Pr-i, Bu-n, in dry organic solvents. The condensations proceed by alkylchloride elimination. Various reaction and calcination conditions were examined. Porosity is obtained after calcination by removal of organic residual groups. This thermal processing at 300 degrees C of as-synthesized precursor gels leads to amorphous aluminophosphate xerogels with surface areas of 400-500m(2)g(-1) provided by small mesopores (2-8nm). Changes in the coordination environment of aluminium from six- to four-coordinate are evidenced by shift of Al-27 MAS NMR resonances. Highlights Dichloroethylalane reacts with trialkylphosphates by alkylchloride elimination.Aluminophosphate gels are obtained from the non-hydrolytic sol-gel technique.Thermal processing at 300 degrees C leads to amorphous xerogels with surface areas of 400-500m(2)g(-1).Porosity is composed of small mesopores (2-8nm).Templating with Pluronic P123 significantly improves pore size distribution.

Návaznosti

EE2.3.30.0037, projekt VaV

Název: Zaměstnáním nejlepších mladých vědců k rozvoji mezinárodní spolupráce

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

90043, velká výzkumná infrastruktura

Název: CIISB

Citovat

PODHORSKÝ, Ján, Jan CHYBA, Jiří PINKAS a Zdeněk MORAVEC. Synthesis of aluminophosphate xerogels by non-hydrolytic sol-gel condensation of EtAlCl2 with trialkylphosphates. Journal of Sol-Gel Science and Technology. NEW YORK: SPRINGER, 2019, roč. 91, č. 2, s. 385-398. ISSN 0928-0707. Dostupné z: https://dx.doi.org/10.1007/s10971-019-04953-0.

@article{1522816,
   author = {Podhorský, Ján and Chyba, Jan and Pinkas, Jiří and Moravec, Zdeněk},
   article_location = {NEW YORK},
   article_number = {2},
   doi = {http://dx.doi.org/10.1007/s10971-019-04953-0},
   keywords = {Mesoporous xerogels; Aluminium phosphate; Non-hydrolytic synthesis; Sol-gel processing; Alkylhalide elimination mechanism},
   language = {eng},
   issn = {0928-0707},
   journal = {Journal of Sol-Gel Science and Technology},
   title = {Synthesis of aluminophosphate xerogels by non-hydrolytic sol-gel condensation of EtAlCl2 with trialkylphosphates},
   url = {https://doi.org/10.1007/s10971-019-04953-0},
   volume = {91},
   year = {2019}
}

TY  - JOUR
ID  - 1522816
AU  - Podhorský, Ján - Chyba, Jan - Pinkas, Jiří - Moravec, Zdeněk
PY  - 2019
TI  - Synthesis of aluminophosphate xerogels by non-hydrolytic sol-gel condensation of EtAlCl2 with trialkylphosphates
JF  - Journal of Sol-Gel Science and Technology
VL  - 91
IS  - 2
SP  - 385-398
EP  - 385-398
PB  - SPRINGER
SN  - 09280707
KW  - Mesoporous xerogels
KW  - Aluminium phosphate
KW  - Non-hydrolytic synthesis
KW  - Sol-gel processing
KW  - Alkylhalide elimination mechanism
UR  - https://doi.org/10.1007/s10971-019-04953-0
L2  - https://doi.org/10.1007/s10971-019-04953-0
N2  - We have investigated the preparation of high-surface-area mesoporous aluminophosphates by non-hydrolytic sol-gel method based on reactions of EtAlCl2 with trialkylesters of phosphoric acid (OP(OR)(3), R=Me, Et, Pr-i, Bu-n, in dry organic solvents. The condensations proceed by alkylchloride elimination. Various reaction and calcination conditions were examined. Porosity is obtained after calcination by removal of organic residual groups. This thermal processing at 300 degrees C of as-synthesized precursor gels leads to amorphous aluminophosphate xerogels with surface areas of 400-500m(2)g(-1) provided by small mesopores (2-8nm). Changes in the coordination environment of aluminium from six- to four-coordinate are evidenced by shift of Al-27 MAS NMR resonances. Highlights Dichloroethylalane reacts with trialkylphosphates by alkylchloride elimination.Aluminophosphate gels are obtained from the non-hydrolytic sol-gel technique.Thermal processing at 300 degrees C leads to amorphous xerogels with surface areas of 400-500m(2)g(-1).Porosity is composed of small mesopores (2-8nm).Templating with Pluronic P123 significantly improves pore size distribution.
ER  -

PODHORSKÝ, Ján, Jan CHYBA, Jiří PINKAS a Zdeněk MORAVEC. Synthesis of aluminophosphate xerogels by non-hydrolytic sol-gel condensation of EtAlCl2 with trialkylphosphates. \textit{Journal of Sol-Gel Science and Technology}. NEW YORK: SPRINGER, 2019, roč.~91, č.~2, s.~385-398. ISSN~0928-0707. Dostupné z: https://dx.doi.org/10.1007/s10971-019-04953-0.

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