| MACHÁČ, Petr, Johan G ALAUZUN, Aleš STÝSKALÍK, Damien P DEBECKER, Hubert P MUTIN a Jiří PINKAS. Synthesis of high surface area aluminophosphate and -phosphonate xerogels by non-hydrolytic sol-gel reactions. Microporous and Mesoporous Materials. Amsterdam: Elsevier, 2021, roč. 311, February 2021, s. 1-9. ISSN 1387-1811. Dostupné z: https://dx.doi.org/10.1016/j.micromeso.2020.110682. |
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@article{1686656,
author = {Macháč, Petr and Alauzun, Johan G and Stýskalík, Aleš and Debecker, Damien P and Mutin, Hubert P and Pinkas, Jiří},
article_location = {Amsterdam},
article_number = {February 2021},
doi = {http://dx.doi.org/10.1016/j.micromeso.2020.110682},
keywords = {Aluminophosphates; Aluminophosphonates; Non-hydrolytic; Sol-gel; Silylamine elimination; Mesoporous; Hybrid; Xerogel; Surface area; Catalysis},
language = {eng},
issn = {1387-1811},
journal = {Microporous and Mesoporous Materials},
title = {Synthesis of high surface area aluminophosphate and -phosphonate xerogels by non-hydrolytic sol-gel reactions},
url = {http://dx.doi.org/10.1016/j.micromeso.2020.110682},
volume = {311},
year = {2021}
}
TY - JOUR
ID - 1686656
AU - Macháč, Petr - Alauzun, Johan G - Stýskalík, Aleš - Debecker, Damien P - Mutin, Hubert P - Pinkas, Jiří
PY - 2021
TI - Synthesis of high surface area aluminophosphate and -phosphonate xerogels by non-hydrolytic sol-gel reactions
JF - Microporous and Mesoporous Materials
VL - 311
IS - February 2021
SP - 1-9
EP - 1-9
PB - Elsevier
SN - 13871811
KW - Aluminophosphates
KW - Aluminophosphonates
KW - Non-hydrolytic
KW - Sol-gel
KW - Silylamine elimination
KW - Mesoporous
KW - Hybrid
KW - Xerogel
KW - Surface area
KW - Catalysis
UR - http://dx.doi.org/10.1016/j.micromeso.2020.110682
L2 - http://dx.doi.org/10.1016/j.micromeso.2020.110682
N2 - We disclose the preparation of high-surface-area mesoporous aluminophosphates and aluminophosphonates by the non-hydrolytic sol-gel reactions (NHSG) of Al(NMe2)3 with trimethylsilylated phosphate, phosphonates, and bis-phosphonates) in dry toluene. The reactions proceed by silylamine elimination of Me3SiNMe2 to provide organic-inorganic hybrid xerogels with properties influenced by organic substituents and the Al:P ratio of the precursors.Dried xerogels exhibit large surface areas (up to 1000 m2 g-1) and matrices based on condensed Al-O-P networks. They stay stable under relatively harsh thermal conditions. 27Al, 13C, and 29Si solid-state NMR spectroscopy was employed to characterize the aluminum coordination and the residual amido and trimethylsilyl groups. The catalytic performance of NHSG prepared material was examined in gas-phase dehydration of ethanol to ethylene exhibiting conversion and selectivity comparable to weak solid acid benchmark catalysts. The number of unreacted surface groups was determined by gravimetric measurements and by thermal analysis (TG-DSC). These residual groups have the potential to be used in post-synthetic grafting of catalytically active metal centers.
ER -
MACHÁČ, Petr, Johan G ALAUZUN, Aleš STÝSKALÍK, Damien P DEBECKER, Hubert P MUTIN a Jiří PINKAS. Synthesis of high surface area aluminophosphate and -phosphonate xerogels by non-hydrolytic sol-gel reactions. \textit{Microporous and Mesoporous Materials}. Amsterdam: Elsevier, 2021, roč.~311, February 2021, s.~1-9. ISSN~1387-1811. Dostupné z: https://dx.doi.org/10.1016/j.micromeso.2020.110682.
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