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Studies on heat capacities and thermal analysis of Li-Mg-N-H hydrogen storage system
Xu, F.2; Sun, L. X.1; Chen, P.1; Qi, Y. N.1; Zhang, J.1; Zhao, J. N.1; Liu, Y. F.3; Zhang, L.4; Cao, Zhong4; Yang, D. W.4; Zeng, J. L.4; Du, Y.5
KeywordLi-mg-n-h System Mdsc Heat Capacity Tg
Source PublicationJOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
2010-05-01
DOI10.1007/s10973-009-0603-5
Volume100Issue:2Pages:701-706
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Analytical ; Chemistry, Physical
WOS Research AreaChemistry
WOS KeywordDIFFERENTIAL SCANNING CALORIMETRY ; THERMODYNAMIC PROPERTIES ; IMIDES ; DSC
AbstractThe heat capacities of LiNH2 and Li2MgN2H2 were measured by a modulated differential scanning calorimetry (MDSC) over the temperature range from 223 to 473 K for the first time. The value of heat capacity of LiNH2 is bigger than that of Li2MgN2H2 from 223 to 473 K. The thermodynamic parameters such as enthalpy (H-H (298.15)) and entropy (S-S (298.15)) versus 298.15 K were calculated based on the above heat capacities. The thermal stabilities of them were investigated by thermogravimetric analysis (TG) at a heating rate of 10 K min(-1) with Ar gas flow rate of 30 mL min(-1) from room temperature to 1,080 K. TG curves showed that the thermal decomposition of them occurred in two stages. The order of thermal stability of them is: Li2MgN2H2 > LiNH2. The results indicate that addition of Mg increases the thermal stability of Li-N-H system and decrease the value of heat capacities of Li-N-H system.
Language英语
WOS IDWOS:000276771600043
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/142204
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian 116023, Peoples R China
2.Liaoning Normal Univ, Coll Chem & Chem Engn, Dalian 116029, Peoples R China
3.Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
4.Changsha Univ Sci & Technol, Sch Chem & Environm Engn, Changsha 410076, Hunan, Peoples R China
5.Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China
Recommended Citation
GB/T 7714
Xu, F.,Sun, L. X.,Chen, P.,et al. Studies on heat capacities and thermal analysis of Li-Mg-N-H hydrogen storage system[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2010,100(2):701-706.
APA Xu, F..,Sun, L. X..,Chen, P..,Qi, Y. N..,Zhang, J..,...&Du, Y..(2010).Studies on heat capacities and thermal analysis of Li-Mg-N-H hydrogen storage system.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,100(2),701-706.
MLA Xu, F.,et al."Studies on heat capacities and thermal analysis of Li-Mg-N-H hydrogen storage system".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 100.2(2010):701-706.
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