Thermal Decomposition of Leightonite, K2Ca2Cu（SO4）4·2H2O
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2008年第5期
论文作者：王锦华
文章页码：683 - 686
摘 要：The thermal decomposition of Leightonite, K2Ca2Cu （SO4）4·2H2O, was studied by thermal gravimetric analysis（TGA）, differential thermal analysis（DTA）, X-ray diffraction（XRD）, etc. The results show that the Leightonite is dehydrated around 170 ℃ to 390 ℃ and transformed to be new intermediate （K-Cu-SO4 ） sulphate salt with bright-green color. Moreover, the chemical structure changes during the thernal decomposition process was describled in detail. And the as-resulting phases are demonstrated to be K2Ca2（SO4）3, K2SO4, CaSO4 ,and Cu2O.
王锦华
School of Materials Science and Engineering, Wuhan University of Technology
摘 要：The thermal decomposition of Leightonite, K2Ca2Cu （SO4）4·2H2O, was studied by thermal gravimetric analysis（TGA）, differential thermal analysis（DTA）, X-ray diffraction（XRD）, etc. The results show that the Leightonite is dehydrated around 170 ℃ to 390 ℃ and transformed to be new intermediate （K-Cu-SO4 ） sulphate salt with bright-green color. Moreover, the chemical structure changes during the thernal decomposition process was describled in detail. And the as-resulting phases are demonstrated to be K2Ca2（SO4）3, K2SO4, CaSO4 ,and Cu2O.
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