Related Experiment Video
Updated: Feb 4, 2026

Caenorhabditis Sieve: A Low-tech Instrument and Methodology for Sorting Small Multicellular Organisms
Published on: July 4, 2018
Kinetics of spontaneous water-N2 imbibition in carbon molecular sieves
Wenzhe Li1, Shaoping Xu1, Chunlan Lu2
1State Key Laboratory of Fine Chemicals, Institute of Coal Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Road, Dalian 116024, China.
Abstract:
In this study, a new kinetic model of spontaneous liquid-gas imbibition (SLGI) for microporous adsorbents has been developed. With three carbon molecular sieves (CMS) as adsorbents, N2 as gas probe and water as liquid probe, the kinetics of spontaneous water-N2 imbibition in CMS has been investigated at atmospheric pressure, and the applicability of the kinetic model to the SLGI has been assessed. The influences of the particle size of CMS and the experimental temperature in the range of 20-35 °C on the imbibition process have been analyzed based on the kinetic model. The relations between the kinetic parameters of the SLGI and the microporous parameters of the CMS obtained by CO2 adsorption at 273 K have been elucidated. The results indicate that the imbibition process is controlled by the diffusion of the water molecules into and N2 out of the micropores and the adsorption of the water on the pore surface of the CMS. The equilibrium gas recovery is positively related with the micropore volume, and the gas recovery rate depends mainly on the micropore size of the CMS.
Related Concept Videos
Kinetic Molecular Theory: Molecular Velocities, Temperature, and Kinetic Energy
Molecular Kinetic Energy
Basic Postulates of Kinetic Molecular Theory: Particle Size, Energy, and Collision
Spontaneity
Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules
States of Water
Water freezes when the intermolecular forces are greater than the kinetic energy. Unlike most other substances, water is less dense in its solid state than in its liquid state. This is because each water molecule can form...

