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 and Zdeněk MORAVEC

Basic information

Original name

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

Authors

PODHORSKÝ, Ján (703 Slovakia, belonging to the institution), Jan CHYBA (203 Czech Republic, belonging to the institution), Jiří PINKAS (203 Czech Republic, guarantor, belonging to the institution) and Zdeněk MORAVEC (203 Czech Republic, belonging to the institution)

Edition

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

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10402 Inorganic and nuclear chemistry

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 2.008

RIV identification code

RIV/00216224:14310/19:00109490

Organization unit

Faculty of Science

DOI

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

UT WoS

000473156200015

Keywords in English

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

Abstract

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.

Links

EE2.3.30.0037, research and development project

Name: Zaměstnáním nejlepších mladých vědců k rozvoji mezinárodní spolupráce

LQ1601, research and development project

Name: CEITEC 2020 (Acronym: CEITEC2020)

Investor: Ministry of Education, Youth and Sports of the CR

90043, large research infrastructures

Name: CIISB

Citovat

PODHORSKÝ, Ján, Jan CHYBA, Jiří PINKAS and 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, vol. 91, No 2, p. 385-398. ISSN 0928-0707. Available from: 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 and 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, vol.~91, No~2, p.~385-398. ISSN~0928-0707. Available from: https://dx.doi.org/10.1007/s10971-019-04953-0.

Detailed Information on Publication Record