Powder coating and dissolution rate modification of L-leucine supplements with hydrophilic fumed SiO2 nanoparticles by ultrasonic irradiation in high-pressure liquid CO2

2021 ◽  
Vol 169 ◽  
pp. 105104
Author(s):  
Kiyoshi Matsuyama ◽  
Akane Tsuruoka ◽  
Yuta Nemoto ◽  
Takeshi Nishinomiya
Keyword(s):  
High Pressure ◽  
Dissolution Rate ◽  
Ultrasonic Irradiation ◽  
Sio2 Nanoparticles ◽  
Powder Coating ◽  
Liquid Co2 ◽  
Fumed Sio2

Preparation of MEMO silane-coated SiO2 nanoparticles under high pressure of carbon dioxide and ethanol

2010 ◽  
Vol 52 (3) ◽  
pp. 276-284 ◽  
Author(s):  
D. Stojanovic ◽  
A. Orlovic ◽  
S.B. Glisic ◽  
S. Markovic ◽  
V. Radmilovic ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Sio2 Nanoparticles

Pretreatment of Fir Powder and Its Dissolution in Ionic Liquid of 1-(2-Hydroxylethyl)-3-Ethylene Imidazolium Chloride

2011 ◽  
Vol 236-238 ◽  
pp. 87-90
Author(s):  
Li Ying Guo
Keyword(s):  
High Pressure ◽  
Ionic Liquid ◽  
Dissolution Rate ◽  
Mass Fraction ◽  
Wood Powder ◽  
Imidazolium Chloride ◽  
Chemical Structures ◽  
Good Solubility ◽  
Temperature And Pressure ◽  
Pressure Dissolution

Ionic liquid, 1-(2-hydroxylethyl)-3-ethylene imidazolium chloride ([HeVIM]Cl) was synthesized and its chemical structures was examined by FTIR and 1HNMR. Fir powder was extracted with a mixture of benzene/ethanol or activated with 25% (mass fraction) NaOH under normal temperature and pressure, microwave and high pressure. Dissolution of the pretreated wood powder in [HeVIM]Cl by microwave (90°C, 400w) was studied. The results showed that the ionic liquid [HeVIM]Cl exhibited a good solubility. Wood powder pretreated with 25% NaOH under high pressure had the lowest crystallinity (2.4%) and the highest dissolution rate (21.6%).

scholarly journals Numerical modeling of liquid CO2 phase transition blasting based on smoothed particle hydrodynamics algorithm

2019 ◽  
Vol 23 (Suppl. 3) ◽  
pp. 693-702
Author(s):  
Zhanbiao Yang ◽  
Yuejin Zhou ◽  
Xiaoding Xu ◽  
Wei Yi ◽  
Mingpeng Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Percussive Drilling ◽  
Propagation Criterion ◽  
Liquid Co2 ◽  
High Pressure Co2 ◽  
Particle Hydrodynamics ◽  
Crack Zone ◽  
Action Process ◽  
Sph Algorithm

Liquid CO2 phase transition blasting is a physical blasting method to enhance permeability through liquid CO2 phase transition expansion. To study the propagation criterion of fractures during blasting, the energy of phase transition blasting is evaluated through the thermodynamic equation by studying the action process of the liquid CO2 blasting, thus obtaining the scope of the smash zone and crack zone as well as the propagation criterion of fractures under the effect of high pressure gas. The gas blasting model for a coal body is established based on the SPH algorithm, thus obtaining the criteria for formation of the smash zone and for generatio and propagation of the crack zone. Moreover, the radius of phase transition blasting is surveyed onsite by the peephole method. It is shown that the explosive energy of the MZL-51/2000 phase transition blasting equipment with a release pressure of 270 MPa is 1510 kJ. The coal body is crushed by the high pressure CO2 percussive drilling, forming the smash zone. Meanwhile, fractures are generated around the smash zone. With the expansion and migratio of the gas, the fracture will further grow into a crack zone. The fracture inside the coal body goes through four states: rapid, slow, rapid, and then slow again. According to field surveys, the blasting radius of the MZL-51/2000 equipment with loaded liquid of 1.8 kg is approximately 3 m.

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