Kinetics of Gas Adsorption as a Method of Area Determination

1951 ◽  
Vol 19 (2) ◽  
pp. 251-252 ◽  
Author(s):  
George Jura ◽  
Richard E. Powell
Keyword(s):  
Gas Adsorption ◽  
Kinetics Of ◽  
Area Determination

scholarly journals Influence of microadditive of carbon dioxide on the kinetics of boiling-up of superheated w-pentane

2021 ◽  
Vol 2039 (1) ◽  
pp. 012027
Author(s):  
S A Perminov ◽  
E V Lipnyagov ◽  
M A Parshakova
Keyword(s):  
High Speed ◽  
Gas Adsorption ◽  
Glass Tube ◽  
Initial Value ◽  
Active Centers ◽  
High Speed Video ◽  
Inner Surface ◽  
Vertical Glass ◽  
Attainable Superheat ◽  
Kinetics Of

Abstract The effect of a low-boiling impurity (CO2 gas <1.5% mol) on the kinetics of boiling-up of superheated n-pentane in a vertical glass tube have been studied by high-speed video (2050 fps). The method of continuous pressure decrease from 2.00 to 0.10 MPa (in the temperature range of 100.2-145.1 °C), as well as the method of measuring the lifetimes of superheated liquids at 0.10 MPa (90.2-134.1 °C) have been used. The inner surface of the tube has two visible defects, one of which defines the boundary of the attainable superheat. After degassing the system, the defects of tube cease to play an appreciable role, the active centers are redistributed. The temperature of the attainable superheat increases from the initial value by 20 °C in tests with gas and by 10 °C in subsequent tests without it. The result obtained may be related to physical gas adsorption on the glass surface during the process of evacuation of the system.

Kinetics of residual gas adsorption on Ge(111) surface in low-energy electron backscattering

2006 ◽  
Vol 252 (10) ◽  
pp. 3625-3631
Author(s):  
O.B. Shpenik ◽  
T.Yu. Popik ◽  
V.M. Feyer ◽  
Yu.V. Popik
Keyword(s):  
Gas Adsorption ◽  
Low Energy ◽  
Energy Electron ◽  
Electron Backscattering ◽  
Low Energy Electron ◽  
Residual Gas ◽  
Kinetics Of

scholarly journals Copper-Containing Films Obtained by the Simple Citrate Sol–Gel Route for NO2 Detection: Adsorption and Kinetic Study

Chemosensors ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 79
Author(s):  
Tatiana N. Myasoedova ◽  
Nina K. Plugotarenko ◽  
Tatiana A. Moiseeva
Keyword(s):  
Annealing Temperature ◽  
Gas Adsorption ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Gas Sensitivity ◽  
X Ray ◽  
Percolation Effect ◽  
Kinetics Of ◽  
Gas Effect ◽  
No2 Detection

The citrate sol–gel method was utilized for the fabrication of copper-containing films sensitive to NO2 gas. Effect of annealing temperature on the film phase composition, morphology, and sensor response was studied. X-ray diffraction reveals the formation of Cu2Cl(OH)3 phase at 250 °C and the CuO phase at 350 and 500 °C. It was found out that the films annealed at 250 °C and 350 °C showed the best sensor characteristics. The influence of thermal degradation on the probability of percolation effect in films and its connection to a decrease of gas sensitivity was studied. The kinetics of the NO2 gas adsorption on the film’s surface was described following the Elovich model. Activation energy estimated from the ln(S) vs. 1/T plots was 252 and 30 kJ/mol for the films annealed at 250 and 350 °C, respectively.

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