The influence of phosphorus substitution by molybdenum on the chemical composition and certain properties of the zinc metaphosphate glass

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914877" target="_blank" >RIV/00216275:25310/19:39914877 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0022309319304272?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022309319304272?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jnoncrysol.2019.119556" target="_blank" >10.1016/j.jnoncrysol.2019.119556</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of phosphorus substitution by molybdenum on the chemical composition and certain properties of the zinc metaphosphate glass

Popis výsledku v původním jazyce

xMoO(3)-50ZnO-(50-x)P2O5, i.e. (1-x/50)Zn(PO3)(2)-(x/50)ZnMoO4, glasses were prepared up to x = 25. It has been proved that the glasses are not a mixture of boundary components, but that chemical reactions taking place in the melt during synthesis produce in equilibrium a more complicated chemical mixture. Molybdenum is incorporated into the glass structure as a molybdate(2-) and also as complex cations, a colorless molybdenyl MoO4+ (d(0) system) and blue colored MoO3+ (d(1)). The chemical model of the studied glasses was designed indicating that the glassy matrix gradually changes with increasing molybdenum content from pure anionic metaphosphate to the cationic-anionic network with the help of molybdenyl cation strongly bonded by four covalent donor-acceptor bonds with non-bonding phosphate oxygens. The compositional dependencies of some physical properties agree with the proposed chemical model. The melts or glasses of chemical compositions near the glass-forming border are less stable and immiscibility of glass phases was found.

Název v anglickém jazyce

The influence of phosphorus substitution by molybdenum on the chemical composition and certain properties of the zinc metaphosphate glass

Popis výsledku anglicky

xMoO(3)-50ZnO-(50-x)P2O5, i.e. (1-x/50)Zn(PO3)(2)-(x/50)ZnMoO4, glasses were prepared up to x = 25. It has been proved that the glasses are not a mixture of boundary components, but that chemical reactions taking place in the melt during synthesis produce in equilibrium a more complicated chemical mixture. Molybdenum is incorporated into the glass structure as a molybdate(2-) and also as complex cations, a colorless molybdenyl MoO4+ (d(0) system) and blue colored MoO3+ (d(1)). The chemical model of the studied glasses was designed indicating that the glassy matrix gradually changes with increasing molybdenum content from pure anionic metaphosphate to the cationic-anionic network with the help of molybdenyl cation strongly bonded by four covalent donor-acceptor bonds with non-bonding phosphate oxygens. The compositional dependencies of some physical properties agree with the proposed chemical model. The melts or glasses of chemical compositions near the glass-forming border are less stable and immiscibility of glass phases was found.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Non-Crystalline Solids

ISSN

0022-3093

e-ISSN

—

Svazek periodika

522

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

"119556-1"-"119556-10"

Kód UT WoS článku

000488998900012

EID výsledku v databázi Scopus

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