2022年2月17日 · Zeolite-based molecular sieves are applied in industrial dehydration units for their high water uptake capacities and extremely low equilibrium pressure of water vapor. During their operational life, they tend to lose their water vapor adsorption capacity slowly.

2022年10月19日 · Adsorption represents one of the possible alternative separation technologies for many fluid mixtures. It is a mature technology that has been used for separation applications, such as water treatment, drying, hydrogen purification, air separation, or hydrocarbon separation.

2005年11月1日 · The objectives of this work are to provide water vapor adsorption data on carbon molecular sieve membranes (CMSM) and, starting from the Do model formulation for activated carbon, to propose a new model to describe the adsorption and desorption of water vapor on porous carbons with no meso/macroporosity, as is the case for CMSM.

2015年6月16日 · Adsorption isotherms for water on the UOP molecular sieve 3A were measured by a continuous-flow adsorption system at 298, 313, 333, and 353 K. Experimental data collected were analyzed by...

2014年9月16日 · The kinetics of water-vapor adsorption on molecular sieve 3A was investigated at 25–80 °C and water dew points from −69 to 17 °C. Water uptake curves were fitted with three kinetic models including the linear-driving-force model, the shrinking-core model, and the Langmuir kinetic model.

2024年2月5日 · Carbon molecular sieve membranes have high water vapor permeability. Concentration polarization effects are minimized with high feed and sweep flow rates. Pyrolysis temperature of CMS membranes can be used to tune water vapor permeability. Water vapor permeability, diffusivity, and solubility in CMS membranes were measured.

2020年11月12日 · In this work, an adsorption isotherm is presented for H2O adsorption at 200–350 °C and 0.05–4.5 bar partial pressure on molecular sieve (LTA) 3A. The isotherm has been developed on the basis of experimental data obtained from a thermogravimetric analysis and integrated breakthrough curves.

2018年8月25日 · In this study, 5A molecular sieve zeolite (MSZ) is used as the solid adsorbent since it has high adsorption capacity for pure CO 2 and water (H 2 O) compared to silica gel. Although adsorption of gas using 5A MSZ had been studied, previous works by other researchers studied the premixed multi-component mixtures effect by variation of ...

for water on the UOP molecular sieve 3A were measured by a continuous-flow adsorption system at 298, 313, 333 and 353 K. Experimental data were analyzed by the collected eneralized GStatistical Thermodynamic Adsorption (GSTA) isotherm model. The K+/Na+ molar ratio of this particular type of molecular sieve 3A was approximately 4:6.

2023年6月25日 · In order to understand the water content distribution characteristics of 4A molecular sieve in the process of water absorption and dehydration, the calculation methods of high temperature dehydration and low temperature water absorption were used to discuss the water content distribution of 4A molecular sieve under different desorption ...