期刊
DALTON TRANSACTIONS
卷 42, 期 40, 页码 14432-14437出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3dt51638e
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- PT. Indo Lysaght (Indonesia)
The thermal transformation of zinc hydroxide sulphate hydrate to zinc oxide has been examined using synchrotron X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, and surface area measurements. By collecting X-ray diffraction data in situ, we found that the dehydration of zinc hydroxide sulphate pentahydrate proceeded in discrete steps to form anhydrous zinc hydroxide sulphate. This compound then decomposed to a mixture of zinc oxide and a compound tentatively identified as Zn-3(OH)(2)(SO4)(2) at similar to 235 degrees C. At similar to 360 degrees C, the final dehydroxylation occurred with the formation of zinc oxy-sulphate, Zn3O(SO4)(2), which then decomposed to ZnO at about similar to 800 degrees C. Interruption of the dehydration process can be used to synthesize the intermediate compounds.
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