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Preparation of Hydrated Potassium Molybdenum Bronzes and Their Thermal Decomposition

โœ Scribed by Noriyuki Sotani; Takashi Suzuki; Kazuo Eda; Manabu Yanagi-ishi; Sadao Takagi; Fumikazu Hatayama

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
299 KB
Volume
132
Category
Article
ISSN
0022-4596

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โœฆ Synopsis

Three kinds of hydrated potassium bronze, K 0.23 (H 2 O) 0.65 MoO 3.00 (HyK-AD), K 0.23 (H 2 O) 0.43 MoO 3.00 (HyK-H2), and K 0.23 (H 2 O) 0.27 MoO 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 0.3 MoO 3 , and MoO 3 . In contrast, those heated in air decomposed to K

๐Ÿ“œ SIMILAR VOLUMES

Direct Synthesis of Hydrogen Coinserted
Direct Synthesis of Hydrogen Coinserted Hydrated Sodium and Potassium Molybdenum Bronzes: Their Characterization and Selective Preparation of Purple, Blue, and Red Molybdenum Bronzes
โœ Noriyuki Sotani; Tomoyuki Manago; Takashi Suzuki; Kazuo Eda ๐Ÿ“‚ Article ๐Ÿ“… 2001 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 369 KB

We succeeded in synthesizing the hydrogen coinserted hydrated potassium molybdenum bronzes (HKBz) with the 8-and 6-coordination structures by a direct new reduction method. By this method, the 8-coordination type was obtained. According to NMR results, the behavior of protons in the 8-coordination t