Nonaqueous Routes to Oxide Materials

D 2001

Nonaqueous Routes to Oxide Materials

PINKAS, Jiří; Zuzana BRLEJOVÁ; Markéta CHROMÁ; Jiří LÖBL; Herbert W. ROESKY et. al.

Základní údaje

Originální název

Nonaqueous Routes to Oxide Materials

Autoři

PINKAS, Jiří; Zuzana BRLEJOVÁ; Markéta CHROMÁ; Jiří LÖBL a Herbert W. ROESKY

Vydání

1. vydanie. Košice, Slovensko, Zborník IV. seminára Príprava keramických materiálov, s. 103-106, 2001

Nakladatel

Katedra chémie, Hutnícka fakulta TU v Košiciach

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Slovensko

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/01:00004357

Organizační jednotka

Přírodovědecká fakulta

ISBN

80-7099-660-9

Klíčová slova anglicky

nonaqueous; oxides; silicates; phosphates; building blocks

Štítky

building blocks, nonaqueous, Oxides, phosphates, silicates

Změněno: 27. 2. 2008 10:56, prof. RNDr. Jiří Pinkas, Ph.D.

Anotace

V originále

Nonaqueous synthetic routes leading to oxide materials based on the chemistry of organometallic compounds, coordination complexes, and alkoxides and they are being studied with the aim of preparing new important and useful materials, which can function as catalysts, adsorbents, and ceramics. We are interested in developing new synthetic methodologies for bi- or multimetallic oxides, phosphates, phosphonates, and silicates. Sol-gel techniques rely on hydrolysis and condensation reactions in alcoholic solutions of metal alkoxides. However, they generally fail in the preparation of multimetallic oxide systems where perfect homogeneous mixing of metals at the molecular level is required. The reasons for this are different hydrolysis rates of the precursors, alkoxide ligand exchange, and reversibility of the oxolation reaction. To overcome these drawbacks several alternative procedures have been explored. Completely new anhydrous approach has been described as a nonhydrolytic sol-gel route. The method avoids the presence of water and reactive OH groups in the reaction system thereby increasing the choice of precursors to hydrolytically highly unstable compounds. Furthermore the irreversibility of these condensation reactions and, in some of them, the lack of ligand exchange should favor the formation of homogeneously mixed bicomponent oxide.

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

PINKAS, Jiří; Zuzana BRLEJOVÁ; Markéta CHROMÁ; Jiří LÖBL a Herbert W. ROESKY. Nonaqueous Routes to Oxide Materials. In Zborník IV. seminára Príprava keramických materiálov. 1. vydanie. Košice, Slovensko: Katedra chémie, Hutnícka fakulta TU v Košiciach, 2001, s. 103-106. ISBN 80-7099-660-9.

@inproceedings{366798,
   author = {Pinkas, Jiří and Brlejová, Zuzana and Chromá, Markéta and Löbl, Jiří and Roesky, Herbert W.},
   address = {Košice, Slovensko},
   booktitle = {Zborník IV. seminára Príprava keramických materiálov},
   edition = {1. vydanie},
   keywords = {nonaqueous; oxides; silicates; phosphates; building blocks},
   language = {eng},
   location = {Košice, Slovensko},
   isbn = {80-7099-660-9},
   pages = {103-106},
   publisher = {Katedra chémie, Hutnícka fakulta TU v Košiciach},
   title = {Nonaqueous Routes to Oxide Materials},
   year = {2001}
}

TY  - CONF
ID  - 366798
AU  - Pinkas, Jiří - Brlejová, Zuzana - Chromá, Markéta - Löbl, Jiří - Roesky, Herbert W.
PY  - 2001
TI  - Nonaqueous Routes to Oxide Materials
PB  - Katedra chémie, Hutnícka fakulta TU v Košiciach
CY  - Košice, Slovensko
SN  - 8070996609
KW  - nonaqueous
KW  - oxides
KW  - silicates
KW  - phosphates
KW  - building blocks
N2  - Nonaqueous synthetic routes leading to oxide materials based on the chemistry of organometallic compounds, coordination complexes, and alkoxides and they are being studied with the aim of preparing new important and useful materials, which can function as catalysts, adsorbents, and ceramics. We are interested in developing new synthetic methodologies for bi- or multimetallic oxides, phosphates, phosphonates, and silicates. Sol-gel techniques rely on hydrolysis and condensation reactions in alcoholic solutions of metal alkoxides. However, they generally fail in the preparation of multimetallic oxide systems where perfect homogeneous mixing of metals at the molecular level is required. The reasons for this are different hydrolysis rates of the precursors, alkoxide ligand exchange, and reversibility of the oxolation reaction. To overcome these drawbacks several alternative procedures have been explored. Completely new anhydrous approach has been described as a nonhydrolytic sol-gel route. The method avoids the presence of water and reactive OH groups in the reaction system thereby increasing the choice of precursors to hydrolytically highly unstable compounds. Furthermore the irreversibility of these condensation reactions and, in some of them, the lack of ligand exchange should favor the formation of homogeneously mixed bicomponent oxide.
ER  -

PINKAS, Jiří; Zuzana BRLEJOVÁ; Markéta CHROMÁ; Jiří LÖBL a Herbert W. ROESKY. Nonaqueous Routes to Oxide Materials. In \textit{Zborník IV. seminára Príprava keramických materiálov}. 1. vydanie. Košice, Slovensko: Katedra chémie, Hutnícka fakulta TU v Košiciach, 2001, s.~103-106. ISBN~80-7099-660-9.

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