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Synthesis, characterization, and thermodynamic study of ammonium benzoate C7H5O2NH4(s)
Yang, Wei-Wei1; Di, You-Ying1; Kong, Yu-Xia1; Guo, Xiao-Yang1; Tan, Zhi-Cheng2
KeywordC7h5o2nh4(s) Adiabatic Calorimeter Low-temperature Heat Capacity Isoperibol Solution-reaction Calorimeter Standard Molar Enthalpy Of Formation
Source PublicationTHERMOCHIMICA ACTA
2010-04-20
DOI10.1016/j.tca.2010.01.021
Volume502Issue:1-2Pages:14-19
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS Research AreaChemistry
WOS KeywordACIDS ; HEAT
AbstractBenzoic acid and concentrated ammonia were chosen as reactants and a novel compound (ammonium benzoate) was synthesized using the method of liquid phase reaction. FTIR, elemental analysis and X-ray powder diffraction technique were applied to characterize the structure and composition of the compound. Low-temperature heat capacities of the solid compound were measured by a precision automated adiabatic calorimeter over the temperature range from 80 to 399K. A polynomial equation of the heat capacities was fitted by the least-squares method. In accordance with Hess' law, a thermochemical cycle was designed, the enthalpy change of the reaction of benzoic acid with ammonium acetate was determined as Delta H-r(m)degrees = (15.59 +/- 0.50) kJ mol(-1), and the standard molar enthalpy of formation of the compound was calculated as Delta H-f(m)degrees [C7H5O2NH4,S] = -(472.65 +/- 0.62) kJ mol(-1) by an isoperibol solution-reaction calorimeter. (C) 2010 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000277492800003
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/141980
Collection中国科学院大连化学物理研究所
Affiliation1.Liaocheng Univ, Coll Chem & Chem Engn, Liaocheng 252059, Shandong, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Yang, Wei-Wei,Di, You-Ying,Kong, Yu-Xia,et al. Synthesis, characterization, and thermodynamic study of ammonium benzoate C7H5O2NH4(s)[J]. THERMOCHIMICA ACTA,2010,502(1-2):14-19.
APA Yang, Wei-Wei,Di, You-Ying,Kong, Yu-Xia,Guo, Xiao-Yang,&Tan, Zhi-Cheng.(2010).Synthesis, characterization, and thermodynamic study of ammonium benzoate C7H5O2NH4(s).THERMOCHIMICA ACTA,502(1-2),14-19.
MLA Yang, Wei-Wei,et al."Synthesis, characterization, and thermodynamic study of ammonium benzoate C7H5O2NH4(s)".THERMOCHIMICA ACTA 502.1-2(2010):14-19.
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