DEHYDRATION AND DISSOCIATION OF ZIRCONIUM HYDROXIDE AND HAFNIUM HYDROXIDE

Journal Article · Sat Oct 01 04:00:00 EDT 1960 · Nippon Kagaku Zasshi (Japan) Formerly Nippon Kagaku Kaishi (1921- 47) Merged with Kogyo Kagaku Zasshi to form Nippon Kagaku Kaishi

DOI:https://doi.org/10.1246/nikkashi1948.81.10_1531· OSTI ID:4089156

Takagi, S

The behavior of hafnium hydroxide in dehydration and pyrolysis was examined and compared with zirconium hydroxide. The end products of dehydration of both compounds at room temperature are M(OH)/sub 4/ + 2H/sub 2/O in the air, M(OH)/sub 4/ over calcium chloride, and MO/sub 2/ + 1.5H/sub 2/O over concentrated sulfuric acid (M is zirconium or hafnium). The curves of pyrolysis of both compounds containing considerable amount of water are similar, having the breaks corresponding to the composition MO(OH)/sub 2/ at approximately 140 deg (zirconium) and 155 deg (hafnium). The breaks, however, disappear when dried hydroxides are used. (auth)

• Research Organization: Osaka Univ.
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-010816
• OSTI ID: 4089156
• Journal Information: Nippon Kagaku Zasshi (Japan) Formerly Nippon Kagaku Kaishi (1921- 47) Merged with Kogyo Kagaku Zasshi to form Nippon Kagaku Kaishi, Journal Name: Nippon Kagaku Zasshi (Japan) Formerly Nippon Kagaku Kaishi (1921- 47) Merged with Kogyo Kagaku Zasshi to form Nippon Kagaku Kaishi Vol. Vol: 81; ISSN NPKZA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

AIR
BEHAVIOR
CALCIUM CHLORIDES
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DEHYDRATION
HAFNIUM HYDROXIDES
PYROLYSIS
SULFURIC ACID
TEMPERATURE
WATER
ZIRCONIUM HYDROXIDES