| 水合稀土一氯醋酸盐的合成及其脱水热的测定 |
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| 引用本文： | 吴淑荣,熊为淼.水合稀土一氯醋酸盐的合成及其脱水热的测定[J].高等学校化学学报,1987,8(1):60. |
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| 作者姓名： | 吴淑荣 熊为淼 |
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| 作者单位： | 1. 西北大学热化学研究室;
2. 西北大学化学系 |
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| 摘 要： | 本文合成了La-Ga七种一氯醋酸盐的水合物,经元素分析、热重法和P2O5真空脱水法确定其组成为Ln(CH2ClCOO)3·xH2O(x=1.5,Ln=La,Ce,Pr,Sm,Eu;x=2,Ln=Nd,Gd)。用X-射线衍射测得其粉末衍射数据;用DTA-TG-DTG联用技术研究了水合盐的脱水过程;用DSC法测得各盐的脱水热值。
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| 收稿时间： | 1985-08-28 |
Synthesis of Rare-Earth Monochloroacetate Hydrates and Measurement of Their Dehydration Enthalpies |
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| Wu Shurong,Xiong Weimiao.Synthesis of Rare-Earth Monochloroacetate Hydrates and Measurement of Their Dehydration Enthalpies[J].Chemical Research In Chinese Universities,1987,8(1):60. |
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| Authors: | Wu Shurong Xiong Weimiao |
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| Institution: | 1. Thermochemical Research Laboratory, Northwest University, Xi'an;
2. Chemistry Department, Northwest University, Xi'an |
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| Abstract: | In our laboratory seven hydrated rare-earth monochloroacetates, Ln(CH2ClCOO)3·xH2O(x= 1.5, Ln = La,Ce,Pr,Sm,Eu; x=2,Ln = Nd,Gd) have been synthesized and characterized by elemental analysis, thermogravimetry and dehydration over P2O6The X-ray powder diffraction data of the salts have been obtained by X-ray measurements. The thermal dehydration processes studied by TG, DTG, DTAtechniques show that the salts lose crystallization water through a single-step to yield anhydrous salts. Their dehydration enthalpies were estimated by DSC, the determinated values of enthalpies were of the precision and accuracy of 2%. |
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