Publication detail

Oxidační stavy molybdenu a wolframu v borofosfátových sklech.

Authors: Šubčík Jiří | Koudelka Ladislav | Černošek Zdeněk

Year: 2008

Type of publication: článek v odborném periodiku

Name of source: Sklář a keramik

Publisher name: Česká sklářská společnost

Place: Teplice

Page from-to: 120-123

Titles:

Language	Name	Abstract	Keywords
cze	Oxidační stavy molybdenu a wolframu v borofosfátových sklech.	Byl studován vliv oxidačního stavu molobdenu a wolframu na strukturu a vlastnosti borofosfátových skel připravených v kompoziční řadě (1-x)(0,5ZnO-0,1B2O3-0,4P2O5)-xMO3, kde M = Mo, W.
eng	Oxidation state of molybdenum and tungsten in borophospate glasses.	Redox equilibrium of transition metals in glasses influences final properties of glasses. In this work borophosphate glasses of the series (1-x)(0,5ZnO-0,1B2O3-0,4P2O5)-xMO3 where M = Mo, W were prepared. The obtained glasses were colored in blue and green which is caused by the presence of Mo5+ and W5+ ions. EPR spectroscopy was used to determine the Mo5+/Motot ratio in the molybdenumcontaining glasses. Theoretical values of optical basicity of the glasses were calculated and the influence of the composition and preparation conditions on the redox state of the transition metals is discussed.	glasses;phosphate;molybdenum;tungsten

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