Thermodynamic investigation of room temperature ionic liquid - Heat capacity and thermodynamic functions of BPBF4
文献类型：期刊论文
| 作者 | Zhang, Z. H.; Sun, L. X.; Tan, Z. C.; Xu, F.; Lv, X. C.; Zeng, J. L.; Sawada, Y. |
| 刊名 | journal of thermal analysis and calorimetry
 |
| 出版日期 | 2007-07-01 |
| 卷号 | 89期号:1页码:289-294 |
| 关键词 | BPBF4 combustion calorimetry glass transition heat capacity room temperature ionic liquid phase transition standard enthalpy of formation |
| 英文摘要 | the molar heat capacities of the room temperature ionic liquid 1-butylpyridinium tetrafluoroborate (bpbf4) were measured by an adiabatic calorimeter in temperature range from 80 to 390 k. the dependence of the molar heat capacity on temperature is given as a function of the reduced temperature x by polynomial equations, c-p,(m) [j k-1 mol(-1)]= 181.43+ 51.297x -4.7816x(2)-1.9734x(3)+ 8.1048x(4)+11.108x(5) [x=(t-135)/55] for the solid phase (80-190 k), c-p,c-m [j k-1 mol(-1)]=349.96+25.106x+9.1320x(2)+19.368x(3)+2.23x(4)-8.8201x(5) [x=( t-225)/27] for the glass state (198-252 k), and c-p,c-m [j k-1 mol(-1)]= 402.40+21.982x-3.0304x(2)+3.6514x(3)+3.4585x(4) [x=(t-338)/52] for the liquid phase (286-390 k), respectively. according to the polynomial equations and thermodynamic relationship, the values of thermodynamic function of the bpbf4 relative to 298.15 k were calculated in temperature range from 80 to 390 k with an interval of 5 k. the glass transition of bpbf4 was observed at 194.09 k, the enthalpy and entropy of the glass transition were determined to be delta h-g=2.157 kj mol(-1) and delta s-g= 11.12 j k-1 mol(-1), respectively. the result showed that the melting point of the bpbf4 is 279.79 k, the enthalpy and entropy of phase transition were calculated to be delta h-m=8.453 kj mol(-1) and delta s-m=30.21 j k-1 mol(-1). using oxygen-bomb combustion calorimeter, the molar enthalpy of combustion of bpbf4 was determined to be delta h-c(m)0 =-5451 +/- 3 kj mol(-1). the standard molar enthalpy of formation of bpbf4 was evaluated to be delta h-f(m)0 =-1356.3 +/- 0.8 kj mol(-1) at t=298.150 +/- 0.001 k. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, analytical ; chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | standard molar enthalpy ; molten-salts ; 1-methyl-3-butylimidazolium chloride ; aromatic-hydrocarbons ; free-energies ; solvents ; complexes ; plus ; entropies ; ethyl |
| 收录类别 | ISTP ; SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000247991700042 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140717]  |
| 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, Mat & Thermochem Lab, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China 3.Tokyo Polytech Univ, Fac Engn, Dept Nanochem, Atsugi, Kanagawa 2430297, Japan |
| 推荐引用方式 GB/T 7714 | Zhang, Z. H.,Sun, L. X.,Tan, Z. C.,et al. Thermodynamic investigation of room temperature ionic liquid - Heat capacity and thermodynamic functions of BPBF4[J]. journal of thermal analysis and calorimetry,2007,89(1):289-294. |
| APA | Zhang, Z. H..,Sun, L. X..,Tan, Z. C..,Xu, F..,Lv, X. C..,...&Sawada, Y..(2007).Thermodynamic investigation of room temperature ionic liquid - Heat capacity and thermodynamic functions of BPBF4.journal of thermal analysis and calorimetry,89(1),289-294. |
| MLA | Zhang, Z. H.,et al."Thermodynamic investigation of room temperature ionic liquid - Heat capacity and thermodynamic functions of BPBF4".journal of thermal analysis and calorimetry 89.1(2007):289-294. |
入库方式： OAI收割
来源：大连化学物理研究所
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