Pore structure analysis of ionic liquid-templated porous silica using positron annihilation lifetime spectroscopy

2020 ◽  
Vol 295 ◽  
pp. 109964
Author(s):  
Akihiko Sagara ◽  
Hiroki Yabe ◽  
X. Chen ◽  
Philippe M. Vereecken ◽  
Akira Uedono
Keyword(s):  
Ionic Liquid ◽  
Pore Structure ◽  
Positron Annihilation ◽  
Structure Analysis ◽  
Porous Silica ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Positron Annihilation Lifetime ◽  
Pore Structure Analysis

scholarly journals Probing diffusion barrier integrity on porous silica low-k thin films using positron annihilation lifetime spectroscopy

2001 ◽  
Vol 89 (9) ◽  
pp. 5138-5144 ◽  
Author(s):  
Jia-Ning Sun ◽  
David W. Gidley ◽  
Terry L. Dull ◽  
William E. Frieze ◽  
Albert F. Yee ◽  
...  
Keyword(s):  
Thin Films ◽  
Positron Annihilation ◽  
Diffusion Barrier ◽  
Porous Silica ◽  
Positron Annihilation Lifetime Spectroscopy ◽  
Barrier Integrity ◽  
Positron Annihilation Lifetime ◽  
Low K

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.

Application of nuclear magnetic resonance pore structure analysis to porous silica glass

1989 ◽  
Vol 65 (2) ◽  
pp. 742-751 ◽  
Author(s):  
F. D’Orazio ◽  
J.C. Tarczon ◽  
W. P. Halperin ◽  
K. Eguchi ◽  
T. Mizusaki
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Pore Structure ◽  
Structure Analysis ◽  
Silica Glass ◽  
Porous Silica ◽  
Porous Silica Glass ◽  
Nuclear Magnetic ◽  
Pore Structure Analysis
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