The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform
Benoit Coasne - One of the best experts on this subject based on the ideXlab platform.
-
Reminiscent capillarity in subnanopores
Nature Communications, 2019Co-Authors: Irena Deroche, T. Jean Daou, Cyril Picard, Benoit CoasneAbstract:Fluids in large and small pores display different behaviors with a crossover described through the concept of critical capillarity. Here we report experimental and simulation data for various siliceous zeolites and adsorbates that show unexpected reminiscent capillarity for such nanoporous materials. For pore sizes D exceeding the Fluid Molecule size, the filling pressures p are found to follow a generic behavior k B T ln p ∼ γ/ρD where γ and ρ are the Fluid surface tension and density. This result is rationalized by showing that the filling chemical potential for such ultra-small pores is the sum of (1) an adsorption energy and (2) a capillary energy that remains meaningful even for severe confinements. A phenomenological model, based on Derjaguins formalism to bridge macroscopic and molecular theories for condensation in porous materials, is developed to account for the behavior of Fluids confined down to the molecular scale from simple parameters.
-
Reminiscent capillarity in subnanopores
Nature Communications, 2019Co-Authors: Irena Deroche, T. Jean Daou, Cyril Picard, Benoit CoasneAbstract:Fluids in large and small pores display different behaviors with a crossover described through the concept of critical capillarity. Here we report experimental and simulation data for various siliceous zeolites and adsorbates that show unexpected reminiscent capillarity for such nanoporous materials. For pore sizes D exceeding the Fluid Molecule size, the filling pressures p are found to follow a generic behavior k _B T ln p ∼ γ / ρD where γ and ρ are the Fluid surface tension and density. This result is rationalized by showing that the filling chemical potential for such ultra-small pores is the sum of an adsorption energy and a capillary energy that remains meaningful even for severe confinements. A phenomenological model, based on Derjaguin’s formalism to bridge macroscopic and molecular theories for condensation in porous materials, is developed to account for the behavior of Fluids confined down to the molecular scale from simple parameters. Confined Fluids in porous media exhibit different behaviors in large and small pores, the crossover between the two regimes being not well understood. Here the authors show, by experiments and simulations, that capillarity is reminiscent even for very small pore diameters, providing a unified picture.
Irena Deroche - One of the best experts on this subject based on the ideXlab platform.
-
Reminiscent capillarity in subnanopores
Nature Communications, 2019Co-Authors: Irena Deroche, T. Jean Daou, Cyril Picard, Benoit CoasneAbstract:Fluids in large and small pores display different behaviors with a crossover described through the concept of critical capillarity. Here we report experimental and simulation data for various siliceous zeolites and adsorbates that show unexpected reminiscent capillarity for such nanoporous materials. For pore sizes D exceeding the Fluid Molecule size, the filling pressures p are found to follow a generic behavior k B T ln p ∼ γ/ρD where γ and ρ are the Fluid surface tension and density. This result is rationalized by showing that the filling chemical potential for such ultra-small pores is the sum of (1) an adsorption energy and (2) a capillary energy that remains meaningful even for severe confinements. A phenomenological model, based on Derjaguins formalism to bridge macroscopic and molecular theories for condensation in porous materials, is developed to account for the behavior of Fluids confined down to the molecular scale from simple parameters.
-
Reminiscent capillarity in subnanopores
Nature Communications, 2019Co-Authors: Irena Deroche, T. Jean Daou, Cyril Picard, Benoit CoasneAbstract:Fluids in large and small pores display different behaviors with a crossover described through the concept of critical capillarity. Here we report experimental and simulation data for various siliceous zeolites and adsorbates that show unexpected reminiscent capillarity for such nanoporous materials. For pore sizes D exceeding the Fluid Molecule size, the filling pressures p are found to follow a generic behavior k _B T ln p ∼ γ / ρD where γ and ρ are the Fluid surface tension and density. This result is rationalized by showing that the filling chemical potential for such ultra-small pores is the sum of an adsorption energy and a capillary energy that remains meaningful even for severe confinements. A phenomenological model, based on Derjaguin’s formalism to bridge macroscopic and molecular theories for condensation in porous materials, is developed to account for the behavior of Fluids confined down to the molecular scale from simple parameters. Confined Fluids in porous media exhibit different behaviors in large and small pores, the crossover between the two regimes being not well understood. Here the authors show, by experiments and simulations, that capillarity is reminiscent even for very small pore diameters, providing a unified picture.
Jimmy Yun - One of the best experts on this subject based on the ideXlab platform.
-
Density functional theory of adsorption and phase behavior of the Lennard–Jones Fluids confined in MCM-41 with a finite thickness
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2004Co-Authors: Dapeng Cao, Xianren Zhang, Zhigang Shen, Jian-feng Chen, Jimmy YunAbstract:Abstract The adsorption and phase behavior of the Lennard–Jones (LJ) Fluid confined in MCM-41 with a finite thickness were calculated by using density functional theory (DFT). In the DFT calculation, a potential model representing the interaction between a Fluid Molecule and MCM-41 pore of finite thickness was used, and the Tarazona's recipe of weighted density approximation was adopted. We reported the effect of different variables, including pore size, temperature, potential well depth, pore wall thickness and Fluid molecular parameters, on adsorption isotherm of the LJ Fluid confined in MCM-41 pore. The capillary condensation, hysteresis loop and layering transition of the confined LJ Fluids were also investigated. Based on the calculated grand potential of the system studied, the phase transition point was determined. The competition of capillary condensation and layering transition of a LJ Fluid in confined space was observed. When the interaction between Fluid Molecule and pore wall is weak, the capillary condensation is of dominance, and the layering transition vanishes on desorption isotherm. In the case of reduction of molecular size, the multi-layer adsorption behavior of the confined Fluid appears. In short, the calculated results give a good insight into the adsorption and phase behavior of the confined Fluid.
Cyril Picard - One of the best experts on this subject based on the ideXlab platform.
-
Reminiscent capillarity in subnanopores
Nature Communications, 2019Co-Authors: Irena Deroche, T. Jean Daou, Cyril Picard, Benoit CoasneAbstract:Fluids in large and small pores display different behaviors with a crossover described through the concept of critical capillarity. Here we report experimental and simulation data for various siliceous zeolites and adsorbates that show unexpected reminiscent capillarity for such nanoporous materials. For pore sizes D exceeding the Fluid Molecule size, the filling pressures p are found to follow a generic behavior k B T ln p ∼ γ/ρD where γ and ρ are the Fluid surface tension and density. This result is rationalized by showing that the filling chemical potential for such ultra-small pores is the sum of (1) an adsorption energy and (2) a capillary energy that remains meaningful even for severe confinements. A phenomenological model, based on Derjaguins formalism to bridge macroscopic and molecular theories for condensation in porous materials, is developed to account for the behavior of Fluids confined down to the molecular scale from simple parameters.
-
Reminiscent capillarity in subnanopores
Nature Communications, 2019Co-Authors: Irena Deroche, T. Jean Daou, Cyril Picard, Benoit CoasneAbstract:Fluids in large and small pores display different behaviors with a crossover described through the concept of critical capillarity. Here we report experimental and simulation data for various siliceous zeolites and adsorbates that show unexpected reminiscent capillarity for such nanoporous materials. For pore sizes D exceeding the Fluid Molecule size, the filling pressures p are found to follow a generic behavior k _B T ln p ∼ γ / ρD where γ and ρ are the Fluid surface tension and density. This result is rationalized by showing that the filling chemical potential for such ultra-small pores is the sum of an adsorption energy and a capillary energy that remains meaningful even for severe confinements. A phenomenological model, based on Derjaguin’s formalism to bridge macroscopic and molecular theories for condensation in porous materials, is developed to account for the behavior of Fluids confined down to the molecular scale from simple parameters. Confined Fluids in porous media exhibit different behaviors in large and small pores, the crossover between the two regimes being not well understood. Here the authors show, by experiments and simulations, that capillarity is reminiscent even for very small pore diameters, providing a unified picture.
T. Jean Daou - One of the best experts on this subject based on the ideXlab platform.
-
Reminiscent capillarity in subnanopores
Nature Communications, 2019Co-Authors: Irena Deroche, T. Jean Daou, Cyril Picard, Benoit CoasneAbstract:Fluids in large and small pores display different behaviors with a crossover described through the concept of critical capillarity. Here we report experimental and simulation data for various siliceous zeolites and adsorbates that show unexpected reminiscent capillarity for such nanoporous materials. For pore sizes D exceeding the Fluid Molecule size, the filling pressures p are found to follow a generic behavior k B T ln p ∼ γ/ρD where γ and ρ are the Fluid surface tension and density. This result is rationalized by showing that the filling chemical potential for such ultra-small pores is the sum of (1) an adsorption energy and (2) a capillary energy that remains meaningful even for severe confinements. A phenomenological model, based on Derjaguins formalism to bridge macroscopic and molecular theories for condensation in porous materials, is developed to account for the behavior of Fluids confined down to the molecular scale from simple parameters.
-
Reminiscent capillarity in subnanopores
Nature Communications, 2019Co-Authors: Irena Deroche, T. Jean Daou, Cyril Picard, Benoit CoasneAbstract:Fluids in large and small pores display different behaviors with a crossover described through the concept of critical capillarity. Here we report experimental and simulation data for various siliceous zeolites and adsorbates that show unexpected reminiscent capillarity for such nanoporous materials. For pore sizes D exceeding the Fluid Molecule size, the filling pressures p are found to follow a generic behavior k _B T ln p ∼ γ / ρD where γ and ρ are the Fluid surface tension and density. This result is rationalized by showing that the filling chemical potential for such ultra-small pores is the sum of an adsorption energy and a capillary energy that remains meaningful even for severe confinements. A phenomenological model, based on Derjaguin’s formalism to bridge macroscopic and molecular theories for condensation in porous materials, is developed to account for the behavior of Fluids confined down to the molecular scale from simple parameters. Confined Fluids in porous media exhibit different behaviors in large and small pores, the crossover between the two regimes being not well understood. Here the authors show, by experiments and simulations, that capillarity is reminiscent even for very small pore diameters, providing a unified picture.