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Citation: WANG Ping, GUO Xiangfeng, JIA Lihu, MA Chunmiao, QIAN Lin. Interactions Between 1-Dodecyl-3-methylimidazolium Bromine and Methyl Orange[J]. Chinese Journal of Applied Chemistry, ;2013, 30(7): 840-845. doi: 10.3724/SP.J.1095.2013.20362 shu

Interactions Between 1-Dodecyl-3-methylimidazolium Bromine and Methyl Orange

Key Laboratory of Fine Chemicals of College of Heilongjiang Province, Qiqihar University, Qiqihar 161006, China

Received Date: 21 August 2012
Revised Date: 28 September 2012

The interaction between ionic liquid surfactant,1-dodecyl-3-methylimidazolium bromine(C₁₂mimBr) and anionic dye,methyl orange(MO) was studied using conductometric and surface tension methods in aqueous solutions. The equilibrium constants of the interaction between C₁₂mimBr and MO were derived from the molar conductivities of C₁₂mimBr,MO and mixtures of C₁₂mimBr and MO. At the temperatures of 288.1,298.1 and 308.1 K,the equilibrium constants are 4.89 × 10⁵,4.88 × 10⁴ and 5.76 × 10³L/mol,respectively. Thus,the binding process is an enthalpy driving and spontaneous exothermic reaction.Furthermore,the critical micelle concentrations(cmc) of the solutions of C₁₂mimBr and the mixtures of C₁₂mimBr and MO were measured to be 9.1 × 10^-3 and 7.3 × 10^-5mol/L,respectively. Thus the surface activity of C₁₂mimBr in aqueous solution can be greatly enhanced by MO.
- ionic liquid,
- methyl orange,
- interaction,
- critical micelle concentrations
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