Low-temperature heat capacities of 1-alkyl-3-methylimidazolium bis(oxalato)borate ionic liquids and the influence of anion structural characteristics on thermodynamic properties

	Low-temperature heat capacities of 1-alkyl-3-methylimidazolium bis(oxalato)borate ionic liquids and the influence of anion structural characteristics on thermodynamic properties
	Yang, Miao 1; Zhao, Jun-Ning 2; Liu, Qing-Shan 1; Sun, Li-Xian 2; Yan, Pei-Fang 1; Tan, Zhi-Cheng 1,2; Welz-Biermann, Urs 1
刊名	physical chemistry chemical physics
	2011
卷号	13 期号:1 页码:199-206
ISSN号	待补充
通讯作者	谭志诚 ; urswelz-biermann
产权排序	1,1
中文摘要	low-temperature heat capacities of 1-alkyl-3-methylimidazolium bis(oxalato)borate ionic liquids and the influence of anion structural characteristics on thermodynamic properties
英文摘要	two chelated orthoborate ionic liquids (ils), 1-butyl-3-methylimidazolium bis(oxalato)borate ([bmim][bob]) and 1-hexyl-3-methylimidazolium bis(oxalato)borate ([hmim][bob]), were prepared and characterized. their thermodynamic properties were studied using adiabatic calorimetry and differential scanning calorimetry (dsc). the thermodynamic properties of the two ils were evaluated and compared with each other, and then with those of other [bmim] type ils. the results clearly indicate that for a given cation (or anion) and at a certain temperature, the more atoms in the anion (or cation), the higher the heat capacity; the higher glass-transition temperatures of [bob] type ils than others are mainly caused by the higher symmetry of the orthoborate anion structure. it is suggested that a high content of strong electronegative atoms and c(n) or c(nv) (n = 1,2,3,..., infinity) point group symmetry in the anion are favorable for the design and synthesis of room temperature ils with a wide liquid range.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical ; physics, atomic, molecular & chemical
研究领域[WOS]	chemistry ; physics
关键词[WOS]	thermophysical properties ; bis(trifluoromethylsulfonyl)imide ; 1-ethyl-3-methylimidazolium ; calorimeter ; enthalpy ; emies
收录类别	SCI
语种	英语
WOS记录号	WOS:000285099800023
公开日期	2012-07-09
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/115171]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, China Ion Liquid Lab, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Thermochem Lab, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Yang, Miao,Zhao, Jun-Ning,Liu, Qing-Shan,et al. Low-temperature heat capacities of 1-alkyl-3-methylimidazolium bis(oxalato)borate ionic liquids and the influence of anion structural characteristics on thermodynamic properties[J]. physical chemistry chemical physics,2011,13(1):199-206.
APA	Yang, Miao.,Zhao, Jun-Ning.,Liu, Qing-Shan.,Sun, Li-Xian.,Yan, Pei-Fang.,...&Welz-Biermann, Urs.(2011).Low-temperature heat capacities of 1-alkyl-3-methylimidazolium bis(oxalato)borate ionic liquids and the influence of anion structural characteristics on thermodynamic properties.physical chemistry chemical physics,13(1),199-206.
MLA	Yang, Miao,et al."Low-temperature heat capacities of 1-alkyl-3-methylimidazolium bis(oxalato)borate ionic liquids and the influence of anion structural characteristics on thermodynamic properties".physical chemistry chemical physics 13.1(2011):199-206.