Preparation of hexagonal and amorphous chromium oxyhydroxides by facile hydrolysis of K CrO
In: Transactions of Nonferrous Metals Society of China, Jg. 30 (2020-05-01), S. 1397-1405
Online
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Zugriff:
The hydrolysis process and mechanisms of unique as-prepared KCrO2 and K3CrO4 were systematically investigated. The characterization results of XRD, IR and SEM show that the hydrolysis reaction can be realized at a low reaction temperature of 80 °C and a reaction time of 24 h. Moreover, the greyish-green α-CrOOH with a hexagonal plate-like morphology and a large size of 10 μm is formed via the hydrolysis of the single-phase hexagonal KCrO2, while the green sol−gel of amorphous Cr(OH)3 with a lumpy aggregate morphology is generated through the hydrolysis of a cubic K3CrO4. It is a facile and rapid method to synthesize pure-phase chromium oxyhydroxide via the above hydrolysis.
| Titel: |
Preparation of hexagonal and amorphous chromium oxyhydroxides by facile hydrolysis of K CrO
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| Autor/in / Beteiligte Person: | Hongling, Zhang ; Xu, Hong-bin ; Liang, Shuting |
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| Zeitschrift: | Transactions of Nonferrous Metals Society of China, Jg. 30 (2020-05-01), S. 1397-1405 |
| Veröffentlichung: | Elsevier BV, 2020 |
| Medientyp: | unknown |
| ISSN: | 1003-6326 (print) |
| DOI: | 10.1016/s1003-6326(20)65305-5 |
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