Prediction of Liquid Molar Volumes by Additive Methods

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Abstract

Liquid molar volumes of typical alcohols and hydrocarbons measured previously under atmospheric pressure at 20–70°C are complied and tabulated. An additive method by Elbro <I>et al</I>. was adopted to predict these liquid molar volumes. The method is found to be useful. However, it cannot be adopted to several substances because additive factors required are not available. In this study, a simple predictive method is proposed by using the expansion coefficient, <I>β</I> = (<I>v</I><SUB>b</SUB> – <I>v</I><SUB>25</SUB>)/(<I>t</I><SUB>b</SUB> – <I>t</I><SUB>25</SUB>). The molar volumes at 25°C, <I>v</I><SUB>25</SUB>, and at the normal boiling point, <I>v</I><SUB>b</SUB>, were predicted by the additive methods of Fedors and Le Bas, respectively. Liquid molar volumes at the temperature <I>t</I> can be predicted by <I>v</I><SUB>25</SUB> + <I>β</I>(<I>t</I> – 25). The present approach is found to be successful except for small molecules, such as methanol and ethanol.

Journal

  • JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 38(11), 870-872, 2005-11-01

    The Society of Chemical Engineers, Japan

References:  7

Cited by:  3

Codes

  • NII Article ID (NAID)
    130000019420
  • NII NACSIS-CAT ID (NCID)
    AA00709658
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    00219592
  • NDL Article ID
    7716693
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z53-R395
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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