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Thermodynamic Studies of Rod- and Spindle-Shaped beta-FeOOH Crystals
Wei, Chengzhen1; Wang, Xiaoming1; Nan, Zhaodong1; Tan, Zhicheng2
Source PublicationJOURNAL OF CHEMICAL AND ENGINEERING DATA
2010
DOI10.1021/je900373z
Volume55Issue:1Pages:366-369
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Multidisciplinary ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordALPHA-FE2O3 NANORODS ; ENTHALPY
AbstractDifferent 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).
Language英语
WOS IDWOS:000273405200056
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142228
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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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