Limiting activity coefficients from an improved differential boiling point technique

1990 ◽  
Vol 35 (2) ◽  
pp. 156-162 ◽  
Author(s):  
D. Mark Trampe ◽  
Charles A. Eckert
Keyword(s):  
Activity Coefficients ◽  
Boiling Point

scholarly journals FORMATION OF AZEOTROPIC MIXTURES OF N-METHYLPYRROLIDONE WITH HYDROCARBONS

2021 ◽  
Vol 56 ◽  
pp. 12-16
Author(s):  
Alexey V. Kameshkov ◽  
◽  
Alexander A. Gaile ◽  
Vasily N. Klementyev ◽  
Sofya D. Usanova ◽  
...  
Keyword(s):  
Activity Coefficients ◽  
Boiling Point ◽  
Binary Systems ◽  
Raw Materials ◽  
Technological Scheme ◽  
Saturated Hydrocarbons ◽  
Azeotropic Mixtures ◽  
Regeneration Unit

Using the limiting activity coefficients of the components of binary systems of N-methylpyrrolidone with n-alkanes and the conditions for the formation of azeotropes, it is found that N-methylpyrrolidone forms azeotropic mixtures with n-alkanes С9 - С 15, with alkylbenzenes С 10 - С 12 and with naphthalene. The formation of azeotropes with saturated hydrocarbons with a boiling point of 230-270 ° C must be taken into account when developing a technological scheme for the N-methylpyrrolidone regeneration unit, and also not to use this extractant for extraction purification of raw materials with a boiling point below 230 ° C

Isobaric vapour–liquid equilibria of 1-bromobutane + chloroethane systems

1991 ◽  
Vol 69 (2) ◽  
pp. 311-314 ◽  
Author(s):  
K. Rambabu ◽  
P. Venkateswarlu ◽  
G. K. Raman ◽  
Y. V. L. Ravi Kumar
Keyword(s):  
Free Energy ◽  
Key Words ◽  
Gibbs Free Energy ◽  
Activity Coefficients ◽  
Boiling Point ◽  
Composition Range ◽  
Liquid Mixtures ◽  
Excess Gibbs Free Energy ◽  
Binary Liquid ◽  
Point Data

The boiling point data for the binary liquid mixtures of 1-bromobutane with 1,2-dichloroethane, 1,1,1-trichloroethane, and 1,1,2,2-tetrachloroethane were obtained over the entire composition range by using a standard Swietoslawski type ebulliometer at 715 Torr. The experimental t–x data were used to estimate Wilson parameters and also to calculate the equilibrium vapor compositions for these systems. These Wilson parameters were used to calculate activity coefficients and these in turn were used to compute excess Gibbs free energy. Key words: Wilson parameters, 1-bromobutane + chloroethane systems.

Inhibition of Radical-Initiated Vinyl Acetate Polymerisation by Tobacco Smoke Fractions

1974 ◽  
Vol 7 (5) ◽  
Author(s):  
M.A. Nisbet ◽  
S. Schmeller
Keyword(s):  
Benzoyl Peroxide ◽  
Vinyl Acetate ◽  
Tobacco Smoke ◽  
Boiling Point ◽  
Water Bath ◽  
Measuring Time ◽  
Time Required

AbstractBoth the vapour and particulate phases of tobacco smoke have been shown to retard benzoyI-peroxide-initiated polymerisation of vinyl acetate by interception of the radicals involved in the polymerisation process. The extent of inhibition of polymerisation by test compounds is estimated by measuring time taken for a mixture of monomer and benzoyl peroxide, immersed in a water-bath at 70°C, to reach a spontaneous boil and comparing it with the time required for a similar mixture with added retarder to reach boiling point. Units are expressed as minutes of inhibition per part per million of inhibitor × 10

HASTELLOY ALLOY D

Alloy Digest ◽  
1956 ◽  
Vol 5 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Sulfuric Acid ◽  
Physical Properties ◽  
Tensile Properties ◽  
Boiling Point ◽  
Cast Alloy ◽  
Heat Treating

Abstract HASTELLOY ALLOY-D is a cast alloy composed primarily of nickel and silicon, and is exceptionally resistant to sulfuric acid of all concentrations even up to the boiling point. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-29. Producer or source: Haynes Stellite Company.

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