Calorimetric study and thermal analysis of [Ho-2(Ala)(4)(H2O)(8)]Cl-6 and [ErY(Ala)(4)(H2O)(8)] (ClO4)(6)
文献类型：期刊论文
| 作者 | Liu, BP; Tan, ZC; Nan, ZD; Liu, P; Sun, LX; Xu, F |
| 刊名 | acta physico-chimica sinica
 |
| 出版日期 | 2002-06-01 |
| 卷号 | 18期号:6页码:481-485 |
| 关键词 | [Ho-2(Ala)(4)(H2O)(8)]Cl-6 [ErY(Ala)(4)(H2O)(8)](ClO4)(6) adiabatic calorimetry heat capacity thermal decomposition |
| 英文摘要 | two solid complexes of rare-earth compounds with alanine, [ho2(ala)(4)(h2o)(8)] cl-6 and [ery(ala)(4)(h2o)(8)] (clo4)(6) (ala = alanine) were synthesized, and a calorimetric study and thermal analysis for the two complexes were performed through adiabatic calorimetry and thermogravimetry. the low-temperature heat capacities of [ho2(ala)(4)(h2o)(8)] cl-6 and [ery(ala)(4)(h2o)(8)] (clo4)(6) were measured with an automated adiabatic precision calorimeter over the temperature range from 78 to 377 k. solid-solid phase transitions were found between 214 k and 255 k with a peak temperature of 235.09 k for [ho2(ala)(4)(h2o)(8)] cl-6, between 99 k and 121 k with a peak temperature of 115. 78 k for [ery (ala)(4) (h2o)(8)] (clo4)(6). the enthalpies and entropies of the phase transitions were determined to be 3.02 kj . mol(-1), 12.83 j . k-1 . mol(-1) for [ho2(ala)(4)(h2o)(8)] cl-6; 1.96 kj . mol(-1), 16.90 j . k-1 . mol(-1) for [ery(ala)(4)(h2o)(8)] (clo4)(6), respectively. thermal decomposition of the two complexes were investigated in the temperature range of 40 similar to 800 degreesc by using the thermogravimetric and differential thermogravimetric (tg/dtg) analysis techniques. the tg/dtg curves showed that the decomposition started from 80 degreesc and ended at 479 degreesc, completed in two steps for [ho2 (ala)(4) (h2o)(8)]cl-6, and started from 120 degreesc and ended at 430 degreesc, completed in three steps for [ery(ala)(4) (h2o)(8)] (clo4)(6), respectively. the possible mechanisms of the thermal decompositions were elucidated. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | heat-capacity ; thermodynamic properties |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000176546800001 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/139193]  |
| 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.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China 2.Changde Normal Coll, Dept Chem, Changde 415000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, BP,Tan, ZC,Nan, ZD,et al. Calorimetric study and thermal analysis of [Ho-2(Ala)(4)(H2O)(8)]Cl-6 and [ErY(Ala)(4)(H2O)(8)] (ClO4)(6)[J]. acta physico-chimica sinica,2002,18(6):481-485. |
| APA | Liu, BP,Tan, ZC,Nan, ZD,Liu, P,Sun, LX,&Xu, F.(2002).Calorimetric study and thermal analysis of [Ho-2(Ala)(4)(H2O)(8)]Cl-6 and [ErY(Ala)(4)(H2O)(8)] (ClO4)(6).acta physico-chimica sinica,18(6),481-485. |
| MLA | Liu, BP,et al."Calorimetric study and thermal analysis of [Ho-2(Ala)(4)(H2O)(8)]Cl-6 and [ErY(Ala)(4)(H2O)(8)] (ClO4)(6)".acta physico-chimica sinica 18.6(2002):481-485. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。