CJCU

Chem. J. Chinese Universities ›› 2013, Vol. 34 ›› Issue (8): 1924.doi: 10.7503/cjcu20130182

• Physical Chemistry • Previous Articles     Next Articles

Volumetric and Viscous Properties for Binary Mixtures of N-Methylpiperazine with Ethyl Acetate or Butyl Acetate from 298.15 K to 313.15 K

LI Dan1, FANG Wen-Jun2, LIU Li1, WU Qian1, ZHANG Hong-Yan1, SUN Xiao-Ri1   

  1. 1. College of Chemistry & Chemical and Environmental Engineering, Weifang University, Weifang 261061, China;
    2. Department of Chemistry, Zhejiang University, Hangzhou 310027, China
  • Received:2013-02-27 Online:2013-08-10 Published:2013-07-19

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Abstract:

Density and viscosity data for binary mixtures of N-methylpiperazine+ethyl acetate and N-me-thylpiperazine+butyl acetate were measured over the entire range of molar fraction at 298.15, 303.15, 308.15 and 313.15 K. Excess molar volume and viscosity deviations were calculated. Excess molar volumes were fitted to the Redlich-Kister equation. The viscosities were correlated with four semi-empirical equations. Thermodynamic functions of activation of the binary systems were correlated. The results show that the excess molar volumes are positive and the viscosity deviations are negative at given temperature, and ΔH≠ plays a major role in the mixing process.

Key words: Binary mixture, N-methylpiperazine, Excess molar volume, Viscosity data correlation

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