Low-temperature heat capacities and standard molar enthalpy of formation of the complex Zn(Phe)(NO3)(2)center dot H2O(s)
文献类型：期刊论文
| 作者 | Di You-Ying; Gao Sheng-Li; Tan Zhi-Cheng |
| 刊名 | acta physico-chimica sinica
 |
| 出版日期 | 2007-09-01 |
| 卷号 | 23期号:9页码:1437-1441 |
| 关键词 | Zn(Phe)(NO3)(2)center dot H2O(s) adiabatic calorimetry low-temperature heat capacity solution-reaction calorimetry standard molar enthalpy of formation |
| 英文摘要 | low-temperature heat capacities of the complex zn(phe)(no3)(2) . h2o(s) (phe: phenylalanine) have been precisely measured with a small sample precision automated adiabatic calorimeter over the temperature range from 78 to 370 k. the initial dehydration temperature of the complex (t-0=(324.27 +/- 0.37) k) has been obtained by means of the analysis of the heat capacity curve. the experimental values of molar heat capacities have been fitted to a polynomial equation of heat capacities (c,,,) vs the temperature (t) with the least square method. the smoothed heat capacities and the thermodynamic functions of the complex have been calculated on the basis of the equation. in accordance with hess law, dissolution enthalpies of the mixtures {znso4 . 7h(2)o(s)+2nano(3)(s)+l-phe(s)} and {zn(phe)(no3)(2) . h2o(s)+ na2so4(s)} in 2 mol . l-1 hcl were measured to be: delta dh(m.1)(0) = -(69.42 +/- 0.05) kj . mol(-1) and delta dh(m.2)(0) =(48.14 +/- 0.04) kj . mol(-1), by using an isoperibol solution-reaction calorimeter. furthermore, the standard molar enthalpy of formation for the complex was determined as, delta h-f(m)0=-(1363.10 +/- 3.52) kj . mol(-1), by designing a thermochemical cycle. in addition, the reliability of the designed thermochemical cycle has been verified by uv-vis spectroscopy and the data of the refractive indices. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | amino-acids ; calorimeter |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249570000024 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140491]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China 2.NW Univ Xian, Dept Chem, Xian 710069, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Liaoning Provin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Di You-Ying,Gao Sheng-Li,Tan Zhi-Cheng. Low-temperature heat capacities and standard molar enthalpy of formation of the complex Zn(Phe)(NO3)(2)center dot H2O(s)[J]. acta physico-chimica sinica,2007,23(9):1437-1441. |
| APA | Di You-Ying,Gao Sheng-Li,&Tan Zhi-Cheng.(2007).Low-temperature heat capacities and standard molar enthalpy of formation of the complex Zn(Phe)(NO3)(2)center dot H2O(s).acta physico-chimica sinica,23(9),1437-1441. |
| MLA | Di You-Ying,et al."Low-temperature heat capacities and standard molar enthalpy of formation of the complex Zn(Phe)(NO3)(2)center dot H2O(s)".acta physico-chimica sinica 23.9(2007):1437-1441. |
入库方式： OAI收割
来源：大连化学物理研究所
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