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Calorimetric study and thermal analysis of crystalline nicotinic acid
Wang, SX; Tan, ZC; Di, YY; Xu, F; Wang, MH; Sun, LX; Zhang, T
关键词Adiabatic Calorimetry Dsc Heat Capacity Nicotinic Acid Phase Transition Tg-dtg
刊名JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
2004
76期:1页:335-342
收录类别SCI
文章类型Article
项目归属1504,1501
产权排名1;1
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
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.
语种英语
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WOS记录号WOS:000221298100037
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被引频次:24[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/81475
专题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
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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.
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