Energy absorption of nanoporous silica particles in aqueous solutions of sodium chloride

Abstract

An experimental study is carried out on the effect of chemical admixtures, particularly sodium chloride, on the energy absorption behaviour of a hydrophobic nanoporous silica. As the pressure increases, once the capillary effect is overcome, the liquid is forced into the nanopores; and when the pressure is reduced, outflow is difficult, resulting in a pronounced hysteresis. The inflow pressure and the specific absorbed energy are strongly dependent on the sodium chloride concentration, providing a promising way to adjust the system performance.

Forced intrusion of water and aqueous solutions in microporous materials: from fundamental thermodynamics to energy storage devices

“…As a part of an important number of studies of the water infiltration-defiltration process in nanoporous materials, 10,[76][77][78][79][80][81][82] Qiao and coworkers 83,84 demonstrated that water could no longer infiltrate (i.e. ''be soaked up spontaneously'') in a hydrophilic zeolite Y when an electrolyte was added.…”

Effects of cation size on infiltration and defiltration pressures of a MCM-41

“…When the liquid phase is de-ionized water, the sorption curve is similar with that of electrolyte solutions, while P in and P d are much lower, in agreement with the variation in effective surface tension. [34][35][36] It is clear that the infiltration pressure decreases as the cation size increases ͑Fig. 2͒.…”

Nonlinear Frequency Response Analysis and Jump Avoidance Design of Molecular Spring Isolator

“…When the hydraulic pressure drops, there is different phenomenon for different kinds of nano-porous materials. For water and hydrophobic silica gels, the confined liquid would remain in the nano-environment, resulting in a significant hysteresis of sorption isotherm [6][7][8][9]. On the contrary, for water and some kinds of hydrophobic zeo lites, water molecules extrude from the nano-pores as soon as the pressure drops, resulting in coincidence sorption isotherm [10][11][12][13][14].…”

“…Suciu [6,7] and Qiao [8][9] tried to use colloidal damper for energy absorption. Eroshenko and Patarin [10][11][12][13][14] start to investigate molecular spring material at the beginning of this century.…”