Vapor Pressures and Enthalpies of Sublimation of Ten Polycyclic Aromatic Hydrocarbons Determined via the Knudsen Effusion Method

2008 ◽  
Vol 53 (3) ◽  
pp. 670-676 ◽  
Author(s):  
Jillian L. Goldfarb ◽  
Eric M. Suuberg
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Vapor Pressures ◽  
Knudsen Effusion ◽  
Polycyclic Aromatic ◽  
Knudsen Effusion Method ◽  
Enthalpies Of Sublimation ◽  
Effusion Method

The Vapor Pressures and Enthalpies of Sublimation of Five Polycyclic Aromatic Hydrocarbons

1974 ◽  
Vol 52 (4) ◽  
pp. 557-563 ◽  
Author(s):  
John James Murray ◽  
Roswell Francis Pottie ◽  
Christian Pupp
Keyword(s):  
Weight Loss ◽  
Aromatic Hydrocarbons ◽  
Probable Error ◽  
Vapor Pressures ◽  
Knudsen Effusion ◽  
B Values ◽  
Polycyclic Aromatic ◽  
Weight Loss Method ◽  
Loss Method ◽  
Enthalpies Of Sublimation

The vapor pressures over benz[a]anthracene (B[a]A), benzo[a]pyrene (B[a]P), benzo[e]pyrene (B[e]P), benzo[ghi]perylene (B[ghi]P), and coronene have been measured using the Knudsen effusion weight loss method. The parameters A and B in the equation log10 [p(atm)] = -(A/T) + B and the enthalpies of sublimation in kcal mol−1 derived therefrom are respectively: B[a]A, 5925 ± 36, 10.045 ± 0.099, 27.12 ± 0.54; B[a]P, 6181 ± 32, 9.601 ± 0.083, 28.29 ± 0.51; B[e]P, 6220 ± 33, 9.736 ± 0.085, 28.46 ± 0.55; B[ghi]P, 6674 ± 40, 9.519 ± 0.093, 30.54 ± 0.55; coronene, 7100 ± 69, 9.110 ± 0.149, 32.49 ± 0.55. The errors shown for the A and B values are standard deviations and for the enthalpies of sublimation are estimates of total probable error.

Supercooled Liquid Vapor Pressures of the Polycyclic Aromatic Hydrocarbons

2002 ◽  
Vol 47 (4) ◽  
pp. 801-806 ◽  
Author(s):  
Ying Duan Lei ◽  
Raymond Chankalal ◽  
Anita Chan ◽  
Frank Wania
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Supercooled Liquid ◽  
Vapor Pressures ◽  
Polycyclic Aromatic ◽  
Liquid Vapor

A VAPOR PRESSURE STUDY OF THE ALLOYS OF MANGANESE WITH COPPER

1963 ◽  
Vol 41 (10) ◽  
pp. 2591-2599 ◽  
Author(s):  
B. F. Peters ◽  
D. R. Wiles
Keyword(s):  
Vapor Pressure ◽  
Physical Properties ◽  
High Temperatures ◽  
Vapor Pressures ◽  
Knudsen Effusion ◽  
Sources Of Error ◽  
Manganese Alloys ◽  
Copper Manganese ◽  
Knudsen Effusion Method ◽  
Effusion Method

The Knudsen effusion method has been applied in a study of the vapor pressures of manganese in equilibrium with copper–manganese alloys at high temperatures. The amount of manganese effused was determined by the use of radioactive Mn54. The odd behavior noted in this system at 20–30% Mn, observed in a number of studies of various physical properties, has been observed once more in the apparent activity of manganese. Some discussion is given of the Knudsen effusion method, particularly regarding some possible sources of error.

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