Preparation of hydrated potassium molybdenum bronzes and their thermal decomposition

Journal Article · Mon Sep 01 00:00:00 EDT 1997 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1997.7469· OSTI ID:569689

Sotani, Noriyuki; Suzuki, Takashi; Eda, Kazuo ^[1]

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1. Kobe Univ. (Japan); and others

Three kinds of hydrated potassium bronze, K{sub 0.23}(H{sub 2}O){sub 0.65} MoO{sub 3.00} (HyK-AD), K{sub 0.23}(H{sub 2}O){sub 0.43}MoO{sub 3.00}(HyK-H2), and K{sub 0.23}(H{sub 2}O){sub 0.27}MoO{sub 3.00}(HyK-H1), were obtained from hydrated sodium bronzes by cation exchange. Hydrated potassium bronzes dried under vacuum are of two types. The first, HyK-H2 belongs to the six-coordination type and the second, HyK-H1, belongs to the eight-coordination type. When hydrated bronzes were heated in nitrogen, they turned into a mixture of the blue potassium bronze, K{sub 0.3}MoO{sub 3}, and MoO{sub 3}. In contrast, those heated in air decomposed to K{sub 2}Mo{sub 4}O{sub 13} and MoO{sub 3}.

• OSTI ID: 569689
• Journal Information: Journal of Solid State Chemistry, Vol. 132, Issue 2; Other Information: PBD: Sep 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DECOMPOSITION
BRONZE
PHYSICAL PROPERTIES
MOLYBDENUM OXIDES
POTASSIUM OXIDES
HEATING