Calorimetric study and thermal analysis of crystalline nicotinic acid
文献类型：期刊论文
| 作者 | Wang, SX; Tan, ZC; Di, YY; Xu, F; Wang, MH; Sun, LX; Zhang, T |
| 刊名 | journal of thermal analysis and calorimetry
 |
| 出版日期 | 2004 |
| 卷号 | 76期号:1页码:335-342 |
| 关键词 | adiabatic calorimetry DSC heat capacity nicotinic acid phase transition TG-DTG |
| 产权排序 | 1;1 |
| 英文摘要 | as one primary component of vitamin b-3, nicotinic acid [pyridine 3-carboxylic acid] was synthesized, and calorimetric study and thermal analysis for this compound were performed. the low-temperature heat capacity of nicotinic acid was measured with a precise automated adiabatic calorimeter over the temperature rang from 79 to 368 k. no thermal anomaly or phase transition was observed in this temperature range. a solid-to-solid transition at t-trs = 451.4 k, a solid-to-liquid transition at t-fus = 509.1 k and a thermal decomposition at t-d = 538.8 k were found through the dsc and tg-dtg techniques. the molar enthalpies of these transitions were determined to be delta(trs)h(m =) 0.81 kj mol(-1), delta(fus)h(m) 27.57 kj mol(-1) and delta(d)h(m) = 62.38 kj mol(-1), respectively, by the integrals of the peak areas of the dsc curves. |
| 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] | heat-capacity |
| 收录类别 | SCI |
| 原文出处 | true |
| 语种 | 英语 |
| WOS记录号 | WOS:000221298100037 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/81475]  |
| 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 | Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, SX,Tan, ZC,Di, YY,et al. Calorimetric study and thermal analysis of crystalline nicotinic acid[J]. journal of thermal analysis and calorimetry,2004,76(1):335-342. |
| APA | Wang, SX.,Tan, ZC.,Di, YY.,Xu, F.,Wang, MH.,...&Zhang, T.(2004).Calorimetric study and thermal analysis of crystalline nicotinic acid.journal of thermal analysis and calorimetry,76(1),335-342. |
| MLA | Wang, SX,et al."Calorimetric study and thermal analysis of crystalline nicotinic acid".journal of thermal analysis and calorimetry 76.1(2004):335-342. |
入库方式： OAI收割
来源：大连化学物理研究所
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