Detail publikace

Non-aqueous template-assisted synthesis of mesoporous nanocrystalline silicon orthophosphate

STYSKALIK, A. ŠKODA, D. MORAVEC, Z. ROUPCOVÁ, P. BARNES, C. PINKAS, J.

Originální název

Non-aqueous template-assisted synthesis of mesoporous nanocrystalline silicon orthophosphate

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The first synthesis of mesoporous nanocrystalline silicon orthophosphate Si5P6O25 is presented. The synthetic procedure is based on the non-hydrolytic sol-gel reaction in the presence of Pluronic P123 template and subsequent calcination in air. The condensation of silicon acetate, Si(OAc)(4), and tris(trimethylsilyl) phosphate, OP(OSiMe3)(3) (TTP), in non-aqueous solvents driven by elimination of trimethylsilyl acetate provides a homogeneous network with a high content of Si-O-P bonds and SiO6 moieties. After burning out the template, mesoporous silicon orthophosphate was obtained with surface areas up to 128 m(2) g(-1) and pore sizes around 20 nm. The nanocrystalline Si5P6O25 phase forms relatively easily (500 degrees C, 4 h) in comparison with other synthetic routes. All samples were characterized by SEM, TEM, elemental analysis, TGA, nitrogen adsorption, SAXS, H-1, C-13, Si-29, and P-31 solid-state NMR spectroscopy, and powder XRD. These xerogels showed superior catalytic activity and selectivity in methylstyrene dimerization.

Klíčová slova

phosphoric-acid catalyst; organic-inorganic hybrid;sol-gel synthesis; phosphosilicate gels; ambient conditions; crystal-structure; molecular-sieves; surface-area; MAS NMR; glasses

Autoři

STYSKALIK, A.; ŠKODA, D.; MORAVEC, Z.; ROUPCOVÁ, P.; BARNES, C.; PINKAS, J.

Vydáno

1. 1. 2015

Nakladatel

Royal Society of Chemistry

Místo

CAMBRIDGE

ISSN

2046-2069

Periodikum

RSC Advances

Ročník

5

Číslo

90

Stát

Spojené království Velké Británie a Severního Irska

Strany od

73670

Strany do

73676

Strany počet

7

URL

https://pubs.rsc.org/en/content/articlehtml/2015/ra/c5ra10982e

Plný text v Digitální knihovně

http://hdl.handle.net/11012/201732

BibTex

@article{BUT163293,
  author="Aleš {Styskalik} and David {Škoda} and Zdeněk {Moravec} and Pavla {Roupcová} and Craig E. {Barnes} and Jiří {Pinkas}",
  title="Non-aqueous template-assisted synthesis of mesoporous nanocrystalline silicon orthophosphate",
  journal="RSC Advances",
  year="2015",
  volume="5",
  number="90",
  pages="73670--73676",
  doi="10.1039/c5ra10982e",
  issn="2046-2069",
  url="https://pubs.rsc.org/en/content/articlehtml/2015/ra/c5ra10982e"
}