Competing Channels in the Propene + OH Reaction: Experiment and Validated Modeling over a Broad Temperature and Pressure Range

2011 ◽  
Vol 225 (11-12) ◽  
pp. 1271-1291 ◽  
Author(s):  
Claudia Kappler ◽  
Judit Zádor ◽  
Oliver Welz ◽  
Ravi X. Fernandez ◽  
Matthias Olzmann ◽  
...  
Keyword(s):  
Pressure Range ◽  
Temperature And Pressure

Equilibrium model for the interpretation of the conduction properties of metal–ammonia solutions

1977 ◽  
Vol 55 (11) ◽  
pp. 2211-2216 ◽  
Author(s):  
S. Hahne ◽  
P. Krebs ◽  
U. Schindewolf
Keyword(s):  
Electrical Conductivity ◽  
Pressure Range ◽  
High Mobility ◽  
Solvation Number ◽  
Free Electrons ◽  
Solvated Electrons ◽  
Entire Concentration Range ◽  
Pressure Coefficients ◽  
Temperature And Pressure ◽  
Conduction Properties

The electrical conductivity of metal–ammonia solutions can be described by an equilibrium of solvated electrons of low mobility and of free electrons of high mobility. With proper choice of the equilibrium constant and its temperature and pressure dependence and of the solvation number of the solvated species the experimental conductivities can be matched in the temperature and pressure range from 240 to 420 K and up to 1000 bar over the entire concentration range from 0.1 mol/ℓ to saturation, also fitting the extrema of the temperature and pressure coefficients of the conductivity around 1 mol/ℓ.

scholarly journals Thermodynamic modeling of solid solubility in supercritical carbon dioxide: Comparison between mixing rules

2013 ◽  
Vol 19 (3) ◽  
pp. 389-398 ◽  
Author(s):  
Hadi Baseri ◽  
Ali Haghighi-Asl ◽  
Nader Lotfollahi
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Thermodynamic Modeling ◽  
Pressure Range ◽  
The Other ◽  
Mixing Rules ◽  
Calculation Results ◽  
Temperature And Pressure ◽  
Robinson Equation ◽  
Supercritical Carbon

In this paper, Peng Robinson equation of state is used for thermodynamic modeling of the solubility of various solid components in the supercritical carbon dioxide. Moreover, the effects of three mixing rules of Van der Waals mixing rules, Panagiotopoulos and Reid mixing rules and modified Kwak and Mansoori mixing rules on the accuracy of calculation results were studied. Good correlations between calculated and experimental data were obtained in the wide temperature and pressure range. A comparison between used models shows that modified Kwak and Mansoori mixing rules give better correlations in comparison with the other mixing rules.

HYDROGEN CHEMISORPTION ON NICKEL–MAGNESIA CATALYSTS

1963 ◽  
Vol 41 (1) ◽  
pp. 68-73 ◽  
Author(s):  
N. Ramasubramanian ◽  
L. M. Yeddanapalli
Keyword(s):  
Kinetic Data ◽  
Pressure Range ◽  
Hydrogen Adsorption ◽  
Catalyst Surface ◽  
Hydrogen Chemisorption ◽  
Oxygen Contamination ◽  
Different Types ◽  
Elovich Equation ◽  
Temperature And Pressure ◽  
Oxygen Addition

The hydrogen adsorption activities, per gram of nickel, of two nickel–magnesia catalysts are compared and explained on the basis of different types of nickel being present. The application of the Elovich equation to interpret the kinetic data shows the possibility of the presence of three kinetic stages in the temperature and pressure range studied. A study of the effect, on the hydrogen adsorption, of deliberate oxygen addition to and re-reduction of the catalyst surface shows that the nature of the oxygen contamination in the catalyst is different from that of the added oxygen.

THE COMPRESSIBILITY OF GASES AT HIGH TEMPERATURES: X. XENON IN THE TEMPERATURE RANGE 0° TO 700 °C. AND THE PRESSURE RANGE 8 TO 50 ATMOSPHERES

1955 ◽  
Vol 33 (4) ◽  
pp. 633-636 ◽  
Author(s):  
E. Whalley ◽  
Y. Lupien ◽  
W. G. Schneider
Keyword(s):  
High Temperatures ◽  
Pressure Range ◽  
Virial Coefficients ◽  
Temperature Range ◽  
Temperature And Pressure

The virial coefficients of xenon have been measured in the temperature and pressure range described. The results are compared with previous measurements.

Thermophysical properties of softened seawater and salt solutions over a wide temperature and pressure range

Desalination ◽  
1978 ◽  
Vol 25 (3) ◽  
pp. 269-280 ◽  
Author(s):  
V.D. Yusufova ◽  
R.I. Pepinov ◽  
V.A. Nicolayev ◽  
G.U. Zokhrabbekova ◽  
N.V. Lobcova ◽  
...  
Keyword(s):  
Thermophysical Properties ◽  
Pressure Range ◽  
Salt Solutions ◽  
Temperature And Pressure

Analysis of Sensitivity and Linearity of SiGe MEMS Piezoresistive Pressure Sensor

2012 ◽  
Vol 241-244 ◽  
pp. 1024-1027 ◽  
Author(s):  
S.Maflin Shaby ◽  
A. Vimala Juliet
Keyword(s):  
Pressure Sensor ◽  
Silicon Germanium ◽  
Pressure Range ◽  
Large Deflection ◽  
Diaphragm Thickness ◽  
Piezoresistive Pressure Sensor ◽  
Linearity Error ◽  
Temperature And Pressure ◽  
Deflection Theory ◽  
Large Deflection Theory

In this paper a surface micromachined MEMS Piezoresistive pressure sensor was designed. A simulation programs were developed to predict the sensitivity and linearity behavior of the piezoresistive pressure sensor. Based on the small and large deflection theory the diaphragm performances were analyzed. Different diaphragm shape, pressure range, placement of resistors and the properties of the resistors were considered during the analysis. The output response of the pressure sensor was also found as a function of temperature and pressure. It was found that silicon germanium gave better sensitivity and less linearity error. The analysis showed that sensitivity and linearity are influenced by diaphragm thickness and length of the sensing resistor used in the diaphragm of the Piezoresistive pressure sensor. It was found that the sensitivity of 5.2mV/V can be achieved for silicon germanium

Solubility of hydrogen in water in a broad temperature and pressure range

1989 ◽  
Vol 66 (1) ◽  
pp. 30-34 ◽  
Author(s):  
V. I. Baranenko ◽  
V. S. Kirov
Keyword(s):  
Pressure Range ◽  
Temperature And Pressure

Equation of Equilibrium Moisture Content of Wood under Vacuum by Regression Analysis

2010 ◽  
Vol 139-141 ◽  
pp. 645-648
Author(s):  
Song Lin Yi ◽  
Yong Dong Zhou ◽  
Zheng Bin He ◽  
Xiao Jiang Feng ◽  
Bi Guang Zhang
Keyword(s):  
Experimental Data ◽  
Moisture Content ◽  
Equilibrium Moisture Content ◽  
Pressure Range ◽  
Solid Wood ◽  
Chinese Fir ◽  
Regression Equation ◽  
Drying Method ◽  
Temperature And Pressure ◽  
Highly Correlated

Relationship among equilibrium moisture content (EMC), temperature and pressure was established under vacuum condition, and EMC regression equation was constructed based on experimental data, with Chinese fir (Cunninghamia lanceolata (Lamb.) Hook) as Experimental material, and MC was measured by oven-drying method. The experimental temperature range was from 40 to 90°C at the interval of 10°C, and pressure range was from 0.02 to 0.08 MPa at the interval of 0.02 MPa. EMC Comparison of Chinese fir and paper wafer sensor showed: EMC of paper wafer sensor changed in the same trend of solid wood. A regression equation was presented and the calculated EMC value was highly correlated with experimental data. This regression equation can be used to predict EMC under vacuum, especially for automatic control system of wood drying under vacuum.

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