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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00109490" target="_blank" >RIV/00216224:14310/19:00109490 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s10971-019-04953-0" target="_blank" >https://doi.org/10.1007/s10971-019-04953-0</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10971-019-04953-0" target="_blank" >10.1007/s10971-019-04953-0</a>

Result language
angličtina
Original language name
Synthesis of aluminophosphate xerogels by non-hydrolytic sol-gel condensation of EtAlCl2 with trialkylphosphates
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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