A Modified Gravimetric Method for Measuring Rates of Vapor Adsorption and Desorption on Soils. Kinetics of Toluene Adsorption/Desorption on Bentonite

2009 ◽  
pp. 95-95-10 ◽  
Author(s):  
ME Grismer ◽  
E Labolle ◽  
T Raihala ◽  
J Eweis
Keyword(s):  
Gravimetric Method ◽  
Adsorption And Desorption ◽  
Vapor Adsorption ◽  
Adsorption Desorption ◽  
Kinetics Of

Diffusion Barriers in the Kinetics of Water Vapor Adsorption/Desorption on Activated Carbons

Langmuir ◽  
1998 ◽  
Vol 14 (14) ◽  
pp. 3858-3864 ◽  
Author(s):  
A. W. Harding ◽  
N. J. Foley ◽  
P. R. Norman ◽  
D. C. Francis ◽  
K. M. Thomas
Keyword(s):  
Water Vapor ◽  
Activated Carbons ◽  
Water Vapor Adsorption ◽  
Diffusion Barriers ◽  
Vapor Adsorption ◽  
Adsorption Desorption ◽  
Kinetics Of

In Situ Monitoring of Adsorption and Desorption of n-Heptane on Porous Silica by Positron Annihilation Lifetime Spectroscopy

2012 ◽  
Vol 733 ◽  
pp. 207-211 ◽  
Author(s):  
Radosław Zaleski ◽  
Waldemar Dolecki ◽  
Jacek Goworek
Keyword(s):  
Positron Annihilation ◽  
Porous Silica ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Intensity Change ◽  
Adsorption And Desorption ◽  
Positron Annihilation Lifetime ◽  
Adsorption Desorption ◽  
Kinetics Of ◽  
Insight Into

Positron annihilation lifetime spectroscopy study of n-heptane adsorption and desorption on silica gel Si-60 gives insight into a free volume evolution during those processes. Analysis of the lifetime distribution allows to ascribe particular ortho-positronium components to silica walls, mesopores and n-heptane. Hysteresis loop of the intensities of the mesopore and n-heptane related components similar to classic adsorption/desorption isotherms is observed. Transition from an adsorbate multilayer structure to liquid when pores become completely filled, manifests itself as an intensity change. Kinetics of desorption and adsorption studies allows to determine the time of reaching the equilibrium by the Si 60–n-heptane system at various pressures.

Kinetics of Water Vapor Adsorption and Desorption in MIL-101 Metal–Organic Frameworks

2018 ◽  
Vol 123 (1) ◽  
pp. 387-398 ◽  
Author(s):  
Kosuke Yanagita ◽  
Junho Hwang ◽  
Jubair A. Shamim ◽  
Wei-Lun Hsu ◽  
Ryotaro Matsuda ◽  
...  
Keyword(s):  
Water Vapor ◽  
Metal Organic Frameworks ◽  
Water Vapor Adsorption ◽  
Adsorption And Desorption ◽  
Vapor Adsorption ◽  
Metal Organic ◽  
Kinetics Of

Equilibrium and Kinetics of Water Vapor Adsorption on Shale

2018 ◽  
Vol 140 (12) ◽  
Author(s):  
Shuo Duan ◽  
Guodong Li
Keyword(s):  
Water Vapor ◽  
Capillary Condensation ◽  
Gravimetric Method ◽  
Water Vapor Adsorption ◽  
Secondary Site ◽  
Relative Pressure ◽  
Adsorption Characteristic ◽  
Vapor Adsorption ◽  
Equilibrium Data ◽  
Kinetics Of

Water vapor adsorption and desorption isotherms and kinetics studies on three Sichuan Basin shale samples were performed at 298 K by an accurate gravimetric method. The adsorption equilibrium data were fitted using both Dent model and Modified Dent model to estimate the adsorption characteristic of water on the primary and secondary sites. The primary site adsorption is restricted to a monolayer while the secondary site adsorption is associated with multilayer sorption. A positive correlation was found between clay mineral content and monolayer sorption content. The isosteric heats of sorption of water were determined from the equilibrium data and they decreased with the increase of adsorption amount. The adsorption/desorption hysteresis were studied with the pore structure. The kinetics of water vapor adsorption was studied with the unipore model and linear driving force mass transfer (LDF) model. The effective diffusivity and kinetic rate constant varied with the increase of relative pressure, which suggested diffusion of water vapor on shale corresponding to a combination of adsorption on primary sites, adsorption on secondary sites, formation of water clusters, and capillary condensation.

Kinetics of Cd(ii) adsorption and desorption on ferrihydrite: experiments and modeling

2018 ◽  
Vol 20 (6) ◽  
pp. 934-942 ◽  
Author(s):  
Yuzhen Liang ◽  
Lei Tian ◽  
Yang Lu ◽  
Lanfang Peng ◽  
Pei Wang ◽  
...  
Keyword(s):  
Binding Sites ◽  
Modeling Tools ◽  
Adsorption And Desorption ◽  
Adsorption Desorption ◽  
Kinetics Of

This study provided modeling tools to quantitatively assess the contributions of individual ferrihydrite binding sites to overall Cd(ii) adsorption/desorption rates.

Kinetics of gallium adlayer adsorption/desorption on polar and nonpolar GaN surfaces

2007 ◽  
Vol 25 (3) ◽  
pp. 969 ◽  
Author(s):  
Soojeong Choi ◽  
Tong-Ho Kim ◽  
Henry O. Everitt ◽  
April Brown ◽  
Maria Losurdo ◽  
...  
Keyword(s):  
Adsorption Desorption ◽  
Kinetics Of ◽  
Nonpolar Gan
Sign in / Sign up

Export Citation Format

Share Document