Effect of Temperature and Pressure in the Photocatalytic Oxidation ofn-Octanol on Partially Desilanized Hydrophobic TiO2Suspended in Aerated Supercritical CO2†

2004 ◽  
Vol 108 (29) ◽  
pp. 10213-10218 ◽  
Author(s):  
Tsutomu Hirakawa ◽  
James K. Whitesell ◽  
Marye Anne Fox
Keyword(s):  
Supercritical Co2 ◽  
Photocatalytic Oxidation ◽  
Effect Of Temperature ◽  
Temperature And Pressure

scholarly journals Effect of Temperature and Pressure of Supercritical CO2 on Dewatering, Shrinkage and Stresses of Eucalyptus Wood

2021 ◽  
Vol 11 (18) ◽  
pp. 8730
Author(s):  
Lin Yang
Keyword(s):  
Residual Stress ◽  
Supercritical Co2 ◽  
Tangential Direction ◽  
Effect Of Temperature ◽  
Eucalyptus Wood ◽  
Conventional Kiln Drying ◽  
Effects Of Temperature ◽  
Temperature And Pressure ◽  
Capillary Tension ◽  
Increasing Temperature

Supercritical CO2 (SuCO2) dewatering can mitigate capillary tension and reduce wood collapse. In this study, Eucalyptus urophylla × E. grandis specimens were dewatered by SuCO2 at temperatures of 35, 40 and 55 °C, in pressures of 10 and 30 MPa, respectively, for 1h. Effects of temperature and pressure on dewatering rate, moisture content (MC) distribution and gradient, shrinkage and residual stress of wood after dewatering were investigated. The results indicate that the SuCO2 dewatering rate is much faster than that of conventional kiln drying (CKD). The dewatering rate increases with increasing of temperature and pressure; however, pressure has a significant influence, especially for the high-temperature dewatering process; the MC distribution after 1 h dewatering is uneven and MC gradients decrease with reducing of mean final MC of wood. MC gradients along radial direction are much smaller than that in tangential direction; collapse of wood significantly reduces after dewatering due to SuCO2 decreasing the capillary tension, and residual stress of wood during dewatering is mainly caused by pressure of SuCO2, which decreases with increasing temperature. SuCO2 dewatering has great potential advantages in water-removal of wood prone to collapse or deformation.

Effect of temperature and pressure on mixed oxide solid solutions

2020 ◽  
Vol 117 ◽  
pp. 107965
Author(s):  
M.Yu. Petrushina ◽  
E.S. Dedova ◽  
K.V. Yusenko ◽  
A.S. Portnyagin ◽  
E.K. Papynov ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Mixed Oxide ◽  
Effect Of Temperature ◽  
Temperature And Pressure

SOLUBILITY OF ETHYLENE IN WATER. EFFECT OF TEMPERATURE AND PRESSURE

1952 ◽  
Vol 44 (1) ◽  
pp. 211-212 ◽  
Author(s):  
E. J. Bradbury ◽  
Dorothy McNulty ◽  
R. I. Savage ◽  
E. E. McSweeney
Keyword(s):  
Effect Of Temperature ◽  
Water Effect ◽  
Temperature And Pressure

The Effect of Temperature and Pressure on Residual Stress in LPCVD Polysilicon Films

1992 ◽  
Vol 276 ◽  
Author(s):  
D-G. Oei ◽  
S. L. McCarthy
Keyword(s):  
Residual Stress ◽  
Deposition Temperature ◽  
Polycrystalline Silicon ◽  
Chemical Vapor ◽  
Effect Of Temperature ◽  
Pressure Chemical ◽  
Polysilicon Films ◽  
Oriented Polycrystalline ◽  
Temperature And Pressure ◽  
Reduced Pressures

ABSTRACTMeasurements of the residual stress in polysilicon films made by Low Pressure Chemical Vapor Deposition (LPCVD) at different deposition pressures and temperatures are reported. The stress behavior of phosphorus (P)-ion implanted/annealed polysilicon films is also reported. Within the temperature range of deposition, 580 °C to 650 °C, the stress vs deposition temperature plot exhibits a transition region in which the stress of the film changes from highly compressive to highly tensile and back to highly compressive as the deposition temperature increases. This behavior was observed in films that were made by the LPCVD process at reduced pressures of 210 and 320 mTORR. At deposition temperatures below 590 °C the deposit is predominantly amorphous, and the film is highly compressive; at temperatures above 610 °C (110) oriented polycrystalline silicon is formed exhibiting high compressive residual stress.

Synergetic effect of temperature and pressure on energetic and structural characteristics of {ZIF-8 + water} molecular spring

Nanoscale ◽  
2015 ◽  
Vol 7 (19) ◽  
pp. 8803-8810 ◽  
Author(s):  
Ya. Grosu ◽  
G. Renaudin ◽  
V. Eroshenko ◽  
J.-M. Nedelec ◽  
J.-P. E. Grolier
Keyword(s):  
Structural Characteristics ◽  
Synergetic Effect ◽  
Effect Of Temperature ◽  
Temperature And Pressure

scholarly journals NEAR HYDRATION OF SINGLY CHARGED MONOATOMIC IONS IN EXTREMELY DILUTED SOLUTIONS: THE EFFECT OF TEMPERATURE AND PRESSURE

2021 ◽  
pp. 24-31
Author(s):  
Viktor Ivanovych Булавин ◽  
Ivan Nikolajevych V’unik ◽  
Andrii Viktorovych Kramarenko ◽  
Alexandr Ivanovych Rusinov
Keyword(s):  
Ion Solvation ◽  
Effect Of Temperature ◽  
Temperature Growth ◽  
Translational Displacement ◽  
Na Ions ◽  
Extremely Diluted Solutions ◽  
Temperature And Pressure ◽  
Singly Charged ◽  
Direction Opposite ◽  
Structure Breaking

The diffusion coefficient  and the distance of translational displacement of Li+, Na+ K+, Cs+, Cl– and Br– ions  in water at 298.15 K – 423.15 K (25 K step) and pressure from 0.0981 to 784.5 MPa (98.1 MPa step) were calculated from the literature data on limiting molar electrical conductivity. The  values for these ions increase with pressure growth from 0.0981  to 98.1 MPa at 298.15 K. Further pressure increase (up to 785 MPa) leads to decrease in . Temperature growth under isobaric conditions leads to an increase in . Parameter (– ri) (deviation from the Stokes–Einstein law, ri is ion structural radius) was used as a criterion for the type of ion solvation. It is shown that Li+ and Na+ ions behave as cosmotropes, or positively solvated structure–forming ions having (– ri) > 0. The Cs+, Cl–, Br– ions behave as chaotropes, or negatively solvated structure–breaking ions having (– ri) < 0. For the K+ ion, the (– ri) deviation is alternating. At 0.0981 MPa and 298.15 K, the K+ ion is a chaotrope. But at 320 K (Tlim) parameter (– ri) = 0. It corresponds to the transition from negative to positive solvation. Above Tlim at P = const, the K+ ion is a cosmotrope. At 298.15 K and up to 98.1 MPa, the pressure causes the same change in the (– ri) deviation as the temperature. On the contrary, at 320 K and higher, the pressure affects the near hydration in the direction opposite to the temperature.

Experimental study on graphene-based nanocomposite membrane for hydrogen purification: Effect of temperature and pressure

2019 ◽  
Vol 330 ◽  
pp. 16-23 ◽  
Author(s):  
Rahman Zeynali ◽  
Kamran Ghasemzadeh ◽  
Alireza Behrooz Sarand ◽  
Farshad Kheiri ◽  
Angelo Basile
Keyword(s):  
Experimental Study ◽  
Nanocomposite Membrane ◽  
Effect Of Temperature ◽  
Hydrogen Purification ◽  
Temperature And Pressure
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