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题名: Calorimetric and Theoretical Study of the Interaction between Some Saccharides and Sodium Halide in Water
作者: Zhuo, Kelei1;  Fu, Yingyi1;  Bai, Guangyue1;  Wang, Jianji1;  Yan, Haike2;  Wang, Hanqing3
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2012-08-23
DOI: 10.1021/jp302567a
卷: 116, 期:33, 页:10026-10035
收录类别: SCI
文章类型: Article
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Dilution enthalpies and mixing enthalpies of sodium halide and some saccharides (glucose, galactose, xylose, arabinose, fructose, and sucrose) in aqueous solution were determined by calorimetric measurements at 298.16 K. The values were used to determine enthalpic pair interaction parameters. Combined with Gibbs energy pair parameters, entropic pair interaction parameters were also obtained. Theoretical calculations at the B3LYP/6-311++G(d,p) level were carried out to provide the information of structures and thermodynamic functions. The information reveals the thermodynamic essence of the interactions between sodium halide and saccharides in aqueous solutions. The experimental results and theoretical calculations show that the sign of enthalpic pair interaction parameter 2vh(ES) is determined by the direct interaction between saccharides and ions, whereas the difference in value of 2vh(ES) for different saccharides or electrolytes depends on the partial dehydration of saccharides or anions in aqueous solution. The difference in value of entropic pair interaction parameters depends partly on the different dominant interactions in the process of partial dehydration of saccharides or ions. An enthalpy-entropy compensation relationship was observed for the sodium bromide-aldopyranose-water systems. Remarkably, it can be conjectured that the hydration entropy of glucose is lower than for, other monosaccharides. Perhaps it is one of the reasons why glucose plays an important role in living organisms rather than other monosaccharides.
关键词[WOS]: ENTROPY-INTERACTION PARAMETERS ;  AQUEOUS-SOLUTIONS ;  D-GLUCOSE ;  298.15 K ;  STEREOCHEMICAL ASPECTS ;  HEAT-CAPACITIES ;  D-GALACTOSE ;  GAS-PHASE ;  AB-INITIO ;  THERMOCHEMICAL DETERMINATIONS
语种: 英语
WOS记录号: WOS:000307749100017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142936
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Henan Normal Univ, Sch Chem & Environm Sci, Key Lab Green Chem Media & React, Minist Educ, Xinxiang 453007, Henan, Peoples R China
2.Chinese Acad Sci, Lanzhou Inst Chem Phys, Lanzhou 730000, Gansu, Peoples R China
3.Chinese Acad Sci, Inst Chem Phys, Beijing 100080, Peoples R China

Recommended Citation:
Zhuo, Kelei,Fu, Yingyi,Bai, Guangyue,et al. Calorimetric and Theoretical Study of the Interaction between Some Saccharides and Sodium Halide in Water[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2012,116(33):10026-10035.
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