Chemical models of molybdenum-calcium phosphate glasses

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F23%3A39920397" target="_blank" >RIV/00216275:25310/23:39920397 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0022309323000911?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022309323000911?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2023.122222" target="_blank" >10.1016/j.jnoncrysol.2023.122222</a>

Result language

angličtina

Original language name

Chemical models of molybdenum-calcium phosphate glasses

Original language description

The influence of molybdenum at varying phosphate network was studied. Three series of MoO3-CaO-P2O5 glasses starting with calcium metaphosphate and ending with chemical compositions formally corresponding to molybdenyl metaphosphate(2+), molybdenyl pyrophosphate(2+) and their equimolar mixture were prepared. Molybdenum is incorporated as molybdenyls, which to a significantly predominant extent form the divalent colorless two-oxygen diamagnetic cation MoVIO22+ accompanied in low concentration by colored paramagnetic MoVO2+. Molybdenyls are bound in the structure by four donor-acceptor bonds with non-bridging phosphate oxygens and form a distiorted tetragonal bipyramid. A chemical model of glasses describing their actual chemical compositions and compositional dependencies was created. It has been shown that the actual chemical composition of glasses is a complicated mixture of chemical compounds. The chemical model also made it possible to have an explanation of the compositional dependences of the glass transition temperature and the coefficient of the thermal expansion of glasses.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Non-Crystalline Solids

ISSN

0022-3093

e-ISSN

1873-4812

Volume of the periodical

607

Issue of the periodical within the volume

May

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

122222

UT code for WoS article

000944425600001

EID of the result in the Scopus database

2-s2.0-85148543448