Synthesis, Characterization and Thermal Property of Phosphate and Sulfate Mixtures
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- 作者：Trilochan Swain ; Gouri Sankhar Brahma
- 关键词：DSC ; Specific heat capacity ; Nanophosphate ; Optical property ; Sensible heat
- 刊名：Journal of Inorganic and Organometallic Polymers and Materials
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：27
- 期：1
- 页码：131-142
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Inorganic Chemistry; Organic Chemistry; Polymer Sciences;
- 出版者：Springer US
- ISSN：1574-1451
- 卷排序：27
文摘
Two inorganic mixtures of copper and sodium compounds have been synthesized and characterized with different measurement techniques. The thermal property of these mixtures has been studied to low temperature up to 223 from 573 K with DSC. The specific heat capacity of this mixture has been measured in atmospheric O2 at a rate of 10 K min−1 from 573 to 223 K and vice versa in two thermal cycles. The net specific heat capacity of these mixtures is found endothermic in first and second thermal cycles. The net specific heat capacity of 0.5Cu2(PO4)(OH); 3.5CuH(PO4)2·H2O; 2NaHSO4·H2O (CuPHS) during first thermal cycle is −71203.05 J kg−1 K−1 and in second thermal cycle is −73881.67 J kg−1 K−1 between temperature range of 303–223 K. The net specific heat capacity of mixture 0.5Cu2(PO4)(OH); 3.5CuH(PO4)2; 2Na2SO4(CuPS) in first thermal cycle is −21158.37 J kg−1 K−1 and in second thermal cycle is−45739.92 J kg−1 K−1 between temperature range of 298–573 K. As both mixtures are endothermic in nature in all cycles, it can be used as heat storage material.The average crystallite size of mixture 0.5Cu2(PO4)(OH); 3.5CuH(PO4)2·H2O; 2NaHSO4·H2O and 0.5Cu2(PO4)(OH); 3.5CuH(PO4)2; 2Na2SO4 is ~47 and ~17.3 nm, respectively.