scholarly journals APPLICATION OF PRIGOGINE-FLORY-PATTERSON THEORY TO EXCESS MOLAR VOLUMES OF BINARY LIQUID MIXTURES OF {METHYL TERT BUTYL ETHER (MTBE) + ALCOHOLS} AT DIFFERENT TEMPERATURES AND ATMOSPHERIC PRESSURE

2018 ◽  
Vol 4 (1) ◽  
pp. 0085-0091
Author(s):  
Heloisa Emi Hoga ◽  
Ricardo Belchior Torres
Keyword(s):  
Atmospheric Pressure ◽  
Excess Molar Volumes ◽  
Liquid Mixtures ◽  
Binary Liquid Mixtures ◽  
Methyl Tert Butyl Ether ◽  
Butyl Ether ◽  
Pfp Theory ◽  
Molar Volumes ◽  
Binary Liquid ◽  
Different Temperatures

No presente estudo, dados experimentais de volume molar excesso ( ) de soluções líquidas binárias de metil terc butl éter (MTBE) + metanol, ou + etanol, ou + 1-propanol, ou + 2-propanol, ou + 1-butanol, ou + 1-pentanol, ou + 1-hexanol foram usados para testar a aplicabilidade da Teoria Prigogine-Flory-Patterson (PFP Theory), como função da composição a diferentes temperaturas e pressão atmosférica. De acordo com o modelo, a contribuição interacional é a mais importante para descrever o comportamento do  . Foi observado que a Teoria PFP reproduz os dados experimentais usando apenas um parâmetro ajustável. Para todos os sistemas estudados foi obtida uma boa concordância entre os resultados experimentais e a Teoria.

Article

1998 ◽  
Vol 76 (12) ◽  
pp. 1860-1866
Author(s):  
Mohamed M El-Banna ◽  
Mervette M El-Batouti
Keyword(s):  
Atmospheric Pressure ◽  
Entire Range ◽  
Excess Molar Volumes ◽  
Liquid Mixtures ◽  
Molar Volumes ◽  
Density Measurements ◽  
Binary Liquid ◽  
Fitted Parameter ◽  
Different Temperatures ◽  
Alkane Chain

Excess molar volumes, VE, for three binary liquid mixtures of cyclohexane + n-dodecane, n-tetradecane, and n-hexadecane were determined from density measurements at seven different temperatures in the range from 283.15 to 313.15 K and atmospheric pressure, over the entire range of mole fractions. The VE values were derived and the results show a regular negative pattern of behaviour for each of the three sets of the binary system. For cyclohexane, the magnitude of VE increases with the alkane chain length. The Prigogine-Flory-Patterson theory was applied to analyze the experimental behaviour by calculating three different contributions to VE, i.e., interactional, free volume, and internal pressure. The theory gives a representation of the main feature of the systems studied by using a fitted parameter to describe the behaviour throughout the composition range.Key words: excess molar volumes, binary mixtures, cyclohexane, n-dodecane, n-tetradecane, n-hexadecane, Prigogine-Flory-Patterson theory.

Sign in / Sign up

Export Citation Format

Share Document