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Thermodynamic Studies of Rod- and Spindle-Shaped beta-FeOOH Crystals
Wei, Chengzhen1; Wang, Xiaoming1; Nan, Zhaodong1; Tan, Zhicheng2
刊名JOURNAL OF CHEMICAL AND ENGINEERING DATA
2010
DOI10.1021/je900373z
55期:1页:366-369
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Multidisciplinary ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]ALPHA-FE2O3 NANORODS ; ENTHALPY
英文摘要Different morphologies of beta-FeOOH including rod- and spindle-shaped crystals were synthesized via a hydrothermal reaction at low temperature. The molar heat capacities of the obtained samples were determined by a precision automated adiabatic calorimeter over the temperature range of (78 to 390) K. The observed results demonstrated that the change of the molar heat capacity with thermodynamic temperature was different for the rod and spindle-shaped beta-FeOOH crystals. Polynomial equations of the molar heat capacities as a function of temperature were fitted by a least-squares method for the rod- and spindle-shaped beta-FeOOH crystals. Smoothed heat capacities and thermodynamic functions of the obtained samples, such as H(T/K) - H(298.15) and S(T/K) - S(298.15), were Calculated on the basis of the fitted polynomials and the relationships of the thermodynamic functions. In addition, the as-prepared samples were also characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and thermal gravimetric analysis (TGA).
语种英语
WOS记录号WOS:000273405200056
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/142228
专题中国科学院大连化学物理研究所
作者单位1.Yangzhou Univ, Coll Chem & Chem Engn, Yangzhou 225002, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
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GB/T 7714
Wei, Chengzhen,Wang, Xiaoming,Nan, Zhaodong,et al. Thermodynamic Studies of Rod- and Spindle-Shaped beta-FeOOH Crystals[J]. JOURNAL OF CHEMICAL AND ENGINEERING DATA,2010,55(1):366-369.
APA Wei, Chengzhen,Wang, Xiaoming,Nan, Zhaodong,&Tan, Zhicheng.(2010).Thermodynamic Studies of Rod- and Spindle-Shaped beta-FeOOH Crystals.JOURNAL OF CHEMICAL AND ENGINEERING DATA,55(1),366-369.
MLA Wei, Chengzhen,et al."Thermodynamic Studies of Rod- and Spindle-Shaped beta-FeOOH Crystals".JOURNAL OF CHEMICAL AND ENGINEERING DATA 55.1(2010):366-369.
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