Ternary vapor-liquid equilibriums in the system methyl ethyl ketone-diethyl ketone-methyl isobutyl ketone

1976 ◽  
Vol 21 (4) ◽  
pp. 470-473 ◽  
Author(s):  
Jaime Wisniak ◽  
Abraham Tamir
1947 ◽  
Vol 25b (1) ◽  
pp. 70-79 ◽  
Author(s):  
A. C. Neish ◽  
F. J. Macdonald

Optically active 4,5-dimethyl-1,3-dioxacyclopentane derivatives can be easily obtained by condensing levo-2,3-butanediol with aldehydes or ketones in the presence of small amounts of strong acids at ordinary temperatures. Condensations were effected with formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, isobutyraldehyde, 2-ethylbutyraldehyde, 2-ethylhexaldehyde, benzaldehyde, furfural, acrolein, acetone, methyl ethyl ketone, methyl isobutyl ketone, methyl amyl ketone, diethyl ketone, acetophenone, cyclohexanone, acetoin, and diacetyl. The expected products were obtained, two compounds being formed from diacetyl since one or both carbonyl groups may react. Two compounds were obtained from formaldehyde also; in addition to the expected product (levo-4,5-dimethyl-1,3-dioxacyclopentane), 15 to 20% of levo-6,7-dimethyl-1,3,5-trioxacycloheptane was obtained.


2012 ◽  
Vol 550-553 ◽  
pp. 2616-2620
Author(s):  
Xiao Li ◽  
Yun Ren Qiu

Atmospheric vapor-liquid equilibrium data of methyl ethyl ketone (MEK) - methyl isobutyl ketone (MIBK) were measured using an improved Rose still and were used to recover the parameters of NRTL and UNIQUAC models. The results show that the simulated results agree well with the experimental data. The mean temperature variation is 0.14 °C and the mean mole fraction variation is 0.0023 using UNIQUAC model while the mean temperature variation is 0.17 °C and the mean mole fraction variation is 0.0025 using NRTL model. Both models can be used to calculate the atmospheric vapor-liquid equilibrium data of MEK - MIBK.


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