PINKAS, Jiří, Zuzana BRLEJOVÁ, Markéta CHROMÁ, Jiří LÖBL and 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. p. 103-106. ISBN 80-7099-660-9. 2001.
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Basic information
Original name Nonaqueous Routes to Oxide Materials
Authors PINKAS, Jiří (203 Czech Republic, guarantor), Zuzana BRLEJOVÁ (203 Czech Republic), Markéta CHROMÁ (203 Czech Republic), Jiří LÖBL (203 Czech Republic) and Herbert W. ROESKY.
Edition 1. vydanie. Košice, Slovensko, Zborník IV. seminára Príprava keramických materiálov, p. 103-106, 2001.
Publisher Katedra chémie, Hutnícka fakulta TU v Košiciach
Other information
Original language English
Type of outcome Proceedings paper
Field of Study 10402 Inorganic and nuclear chemistry
Country of publisher Slovakia
Confidentiality degree is not subject to a state or trade secret
RIV identification code RIV/00216224:14310/01:00004357
Organization unit Faculty of Science
ISBN 80-7099-660-9
Keywords in English nonaqueous; oxides; silicates; phosphates; building blocks
Tags building blocks, nonaqueous, Oxides, phosphates, silicates
Changed by Changed by: prof. RNDr. Jiří Pinkas, Ph.D., učo 627. Changed: 27/2/2008 10:56.
Abstract
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.
Links
GA203/01/1533, research and development projectName: Nové bezvodé metody přípravy fosfátových, silikátových, hybridních a oxidických materiálů
Investor: Czech Science Foundation, New Nonaqueous Routes to Phosphate, Silicate, Hybrid, and Oxide Materials
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