Synthesis of high surface area aluminophosphate and
-phosphonate xerogels by non-hydrolytic sol-gel reactions

J 2021

Synthesis of high surface area aluminophosphate and -phosphonate xerogels by non-hydrolytic sol-gel reactions

MACHÁČ, Petr, Johan G ALAUZUN, Aleš STÝSKALÍK, Damien P DEBECKER, Hubert P MUTIN et. al.

Základní údaje

Originální název

Synthesis of high surface area aluminophosphate and -phosphonate xerogels by non-hydrolytic sol-gel reactions

Název česky

Syntéza alumofosfátových a fosfonátových xerogelů s vysokým měrným povrchem pomocí nehydrolytických sol-gelových metod.

Autoři

MACHÁČ, Petr (203 Česká republika, domácí), Johan G ALAUZUN (250 Francie), Aleš STÝSKALÍK (203 Česká republika, domácí), Damien P DEBECKER (56 Belgie), Hubert P MUTIN (250 Francie) a Jiří PINKAS (203 Česká republika, garant, domácí)

Vydání

Microporous and Mesoporous Materials, Amsterdam, Elsevier, 2021, 1387-1811

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 5.876

Kód RIV

RIV/00216224:14310/21:00120772

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.1016/j.micromeso.2020.110682

UT WoS

000600420800008

Klíčová slova česky

Alumofosfáty; Alumofosfonáty; Nehydrolytický; Sol-Gel; silylaminová eliminace; Mezoporézní; Hybridní; Xerogel; Měrný Povrch; Katalýza

Klíčová slova anglicky

Aluminophosphates; Aluminophosphonates; Non-hydrolytic; Sol-gel; Silylamine elimination; Mesoporous; Hybrid; Xerogel; Surface area; Catalysis

Štítky

CF CRYO, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 7. 1. 2021 12:05, Mgr. Marie Šípková, DiS.

Anotace

V originále

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.

Návaznosti

LM2018127, projekt VaV

Název: Česká infrastruktura pro integrativní strukturní biologii (Akronym: CIISB)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Infrastructure for Integrative Structural Biology

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

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

7AMB17FR050, projekt VaV

Název: Nehydrolytická sol-gelová syntéza oxidů a fosforečnanů kovů a jejich aplikace v katalýze a ukládání energie

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Nehydrolytická sol-gelová syntéza oxidů a fosforečnanů kovů a jejich aplikace v katalýze a ukládání energie

Citovat

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.

@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.

Podrobný výpis o publikaci