| MZn2HPO4PO4 (M=Na+, K+)的合成、表征和标准摩尔生成焓 |
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| 引用本文： | 袁爱群,吴健,黄在银,吴昆,宋宝玲,廖森,童张法.MZn2HPO4PO4 (M=Na+, K+)的合成、表征和标准摩尔生成焓[J].中国化学,2008,26(7):1210-1214. |
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| 作者姓名： | 袁爱群 吴健 黄在银 吴昆 宋宝玲 廖森 童张法 |
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| 作者单位： | a College of Chemistry and Ecology Engineering, Guangxi University for Nationalities, ;Nanning, Guangxi 530006, China ;b School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China ; |
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| 摘 要： | 采用低温固相法和水热法制备MZn2HPO4PO4 (M=Na+, K+) 并用XRD, FT-IR, TG and SEM对其进行表征，用等温量热计测定热化学性质。按照Hess’s定律，设计一新的热化学循环。结果表明，所合成的物质是等结构三斜晶系的目标产物，具有片层结构，分解温度分别为： 415 ℃和430 ℃。从测定的溶解焓和其他的标准热化学数据，计算出MZn2HPO4PO4 (M=Na+, K+) 的标准摩尔生成焓分别为：ΔfHm NaZn2HPO4PO4, s]=-3042.38±0.31 kJ·mol-1; ΔfHm KZn2HPO4PO4,s]=-3093.46 ±0.27 kJ·mol-1。
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| 关 键 词： | 磷酸氢二锌钠 磷酸氢二锌钾 低温固相法 水热法 标准摩尔生成焓 |
| 收稿时间： | 2008-3-8 |
| 修稿时间： | 2008-4-7 |
Synthesis,Characteristics and Standard Molar Enthalpies of Formation of MZn2HPO4PO4 (M=Na+, K+) |
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| Ai‐Qun YUAN,Jian WU,Zai‐Yin HUANG,Kun WU,Bao‐Ling SONG,Sen LIAO,Zhang‐Fa TONG.Synthesis,Characteristics and Standard Molar Enthalpies of Formation of MZn2HPO4PO4 (M=Na+, K+)[J].Chinese Journal of Chemistry,2008,26(7):1210-1214. |
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| Authors: | Ai‐Qun YUAN Jian WU Zai‐Yin HUANG Kun WU Bao‐Ling SONG Sen LIAO Zhang‐Fa TONG |
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| Institution: | 1. College of Chemistry and Ecology Engineering, Guangxi University for Nationalities, Nanning, Guangxi 530006, China;2. School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China;3. Tel.: 0086‐0771‐3233820;4. Fax: 0086‐0771‐3262396 |
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| Abstract: | MZn2HPO4PO4 (M=Na+, K+) double salts were synthesized by a solid‐state reaction at low temperature and a hydrothermal method, respectively, and characterized by XRD, FT‐IR, TG and SEM. Thermochemical study was performed by an isoperibol solution calorimeter. According to Hess's law, a new thermochemical cycle was designed. The results show that the obtained products are layered compounds with an isostructure of triclinic system. The decomposition temperatures are 415 and 430 °C by TG, respectively. With the dissolution enthalpies and other standard chemical data, the standard molar formation enthalpies of the MZn2HPO4PO4 (M=Na+, K+) were worked out as follows: =fH?mNaZn2HPO4PO4, s] =(?3042.38±0.31) kJ·mol?1 and =fH?mKZn2HPO4PO4, s] =(?3093.46±0.27) kJ·mol?1. |
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| Keywords: | sodium dizinc phosphate hydrogenphosphate potassium dizinc phosphate hydrogenphosphate solid‐state reaction at low temperature hydrothermal method standard molar enthalpy of formation |
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