Preparation of Mesoporous Metallophosphate Materials

D 2002

Preparation of Mesoporous Metallophosphate Materials

CHROMÁ, Markéta, Jiří PINKAS, Iva JANČÁLKOVÁ a Herbert W ROESKY

Základní údaje

Originální název

Preparation of Mesoporous Metallophosphate Materials

Autoři

CHROMÁ, Markéta (203 Česká republika), Jiří PINKAS (203 Česká republika, garant), Iva JANČÁLKOVÁ (203 Česká republika) a Herbert W ROESKY (276 Německo)

Vydání

Brno, Sborník příspěvků IV. seminář Pokroky v anorganické chemii, s. 35-36, 2002

Nakladatel

Masarykova univerzita v Brně

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/02:00006500

Organizační jednotka

Přírodovědecká fakulta

ISBN

80-210-2951-X

Klíčová slova anglicky

mesoporous; metallophosphates; homogeneous precipitation

Štítky

homogeneous precipitation, mesoporous, metallophosphates

Změněno: 31. 5. 2009 22:21, prof. RNDr. Jiří Pinkas, Ph.D.

Anotace

V originále

Since the discovery of new synthetic strategies leading to mesoporous materials, supramolecular templating, these materials attract immense attention of many scientists. This new approach is based on the presence of surfactants in a solution. Surfactants can associate into supramolecular arrays, micelles, and therefore can be employed as structure-directing agents for the formation of the inorganic mesostructure from the solubilized inorganic precursors. From the mesostructured material, the surfactant is then removed usually by calcination, alternatively by solvent extraction or ozone treatment. Mesoporous materials are high surface area amorphous solids (up to 1400 m2g-1) characterized by monosized cylindrical pores, ranging from 2 to 50 nm in diameter, with long-range ordering of the packing of pores. Three mesostructure types are studied most frequently: hexagonal, lamellar, and cubic. For the synthesis new mesostructured materials we used as template either a geminal anionic surfactant C12H25OPO(OH)(OCH2CH2)3OPO(OH)OC12H25, prepared by the reaction POCl3 with triethylene glycol followed by the substitution of chlorine atoms by dodecanolate and hydroxyl group, or an anionic surfactant CH3(CH2)11N[CH2P(O)(OH)2]2, prepared by the Mannich reaction of primary dodecylamine with formaldehyde and phosphonic acid. These surfactants were characterized by 1H, 31P, 13C-NMR spectroscopy, X-ray powder diffraction, thermal and elemental analyses, mass spectrometry and IR spectroscopy. By evaluating the surface tension dependence on the concentration of surfactants, we have also determined their critical micellar concentration. Homogenous precipitation method using urea4 served us to prepare aluminium, zirconium, chromium, copper, cobalt and nickel mesostructured materials which were characterized by X-ray powder diffraction, IR spectroscopy, thermal and elemental analyses, 27Al and 31P MAS-NMR spectroscopy. However, we have not yet been able to find applicable method for surfactant removal from mesostructured materials without the collapse of the inorganic mesostructures.

Návaznosti

GA203/01/1533, projekt VaV

Název: Nové bezvodé metody přípravy fosfátových, silikátových, hybridních a oxidických materiálů

Investor: Grantová agentura ČR, Nové bezvodé metody přípravy fosfátových, silikátových, hybridních a oxidických materiálů

Citovat

CHROMÁ, Markéta, Jiří PINKAS, Iva JANČÁLKOVÁ a Herbert W ROESKY. Preparation of Mesoporous Metallophosphate Materials. In Sborník příspěvků IV. seminář Pokroky v anorganické chemii. Brno: Masarykova univerzita v Brně, 2002, s. 35-36. ISBN 80-210-2951-X.

@inproceedings{405696,
   author = {Chromá, Markéta and Pinkas, Jiří and Jančálková, Iva and Roesky, Herbert W},
   address = {Brno},
   booktitle = {Sborník příspěvků IV. seminář Pokroky v anorganické chemii},
   keywords = {mesoporous; metallophosphates; homogeneous precipitation},
   language = {eng},
   location = {Brno},
   isbn = {80-210-2951-X},
   pages = {35-36},
   publisher = {Masarykova univerzita v Brně},
   title = {Preparation of Mesoporous Metallophosphate Materials},
   year = {2002}
}

TY  - JOUR
ID  - 405696
AU  - Chromá, Markéta - Pinkas, Jiří - Jančálková, Iva - Roesky, Herbert W
PY  - 2002
TI  - Preparation of Mesoporous Metallophosphate Materials
PB  - Masarykova univerzita v Brně
CY  - Brno
SN  - 802102951X
KW  - mesoporous
KW  - metallophosphates
KW  - homogeneous precipitation
N2  - Since the discovery of new synthetic strategies leading to mesoporous materials, supramolecular templating, these materials attract immense attention of many scientists. This new approach is based on the presence of surfactants in a solution. Surfactants can associate into supramolecular arrays, micelles, and therefore can be employed as structure-directing agents for the formation of the inorganic mesostructure from the solubilized inorganic precursors. From the mesostructured material, the surfactant is then removed usually by calcination, alternatively by solvent extraction or ozone treatment. Mesoporous materials are high surface area amorphous solids (up to 1400 m2g-1) characterized by monosized cylindrical pores, ranging from 2 to 50 nm in diameter, with long-range ordering of the packing of pores. Three mesostructure types are studied most frequently: hexagonal, lamellar, and cubic. For the synthesis new mesostructured materials we used as template either a geminal anionic surfactant C12H25OPO(OH)(OCH2CH2)3OPO(OH)OC12H25, prepared by the reaction POCl3 with triethylene glycol followed by the substitution of chlorine atoms by dodecanolate and hydroxyl group, or an anionic surfactant CH3(CH2)11N[CH2P(O)(OH)2]2, prepared by the Mannich reaction of primary dodecylamine with formaldehyde and phosphonic acid. These surfactants were characterized by 1H, 31P, 13C-NMR spectroscopy, X-ray powder diffraction, thermal and elemental analyses, mass spectrometry and IR spectroscopy. By evaluating the surface tension dependence on the concentration of surfactants, we have also determined their critical micellar concentration. Homogenous precipitation method using urea4 served us to prepare aluminium, zirconium, chromium, copper, cobalt and nickel mesostructured materials which were characterized by X-ray powder diffraction, IR spectroscopy, thermal and elemental analyses, 27Al and 31P MAS-NMR spectroscopy. However, we have not yet been able to find applicable method for surfactant removal from mesostructured materials without the collapse of the inorganic mesostructures.
ER  -

CHROMÁ, Markéta, Jiří PINKAS, Iva JANČÁLKOVÁ a Herbert W ROESKY. Preparation of Mesoporous Metallophosphate Materials. In \textit{Sborník příspěvků IV. seminář Pokroky v anorganické chemii}. Brno: Masarykova univerzita v Brně, 2002, s.~35-36. ISBN~80-210-2951-X.

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