Diffusion of Methane and Carbon Dioxide in Carbon Molecular Sieve Membranes by Multinuclear Pulsed Field Gradient NMR

Langmuir ◽  
2012 ◽  
Vol 28 (27) ◽  
pp. 10296-10303 ◽  
Author(s):  
Robert Mueller ◽  
Rohit Kanungo ◽  
Mayumi Kiyono-Shimobe ◽  
William J. Koros ◽  
Sergey Vasenkov
Keyword(s):  
Carbon Dioxide ◽  
Field Gradient ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve ◽  
Pulsed Field Gradient Nmr ◽  
Pulsed Field

Diffusion of ethane and ethylene in carbon molecular sieve membranes by pulsed field gradient NMR

2013 ◽  
Vol 181 ◽  
pp. 228-232 ◽  
Author(s):  
Robert Mueller ◽  
Rohit Kanungo ◽  
Mayumi Kiyono-Shimobe ◽  
William J. Koros ◽  
Sergey Vasenkov
Keyword(s):  
Field Gradient ◽  
Molecular Sieve ◽  
Carbon Molecular Sieve ◽  
Pulsed Field Gradient Nmr ◽  
Pulsed Field

Robustness of Methane Diffusion in Geometrically Restricted Molecular Sieve Pores

1994 ◽  
Vol 366 ◽  
Author(s):  
Sriram S. Nivarthi ◽  
H. Ted Davis ◽  
Alon V. McCormick
Keyword(s):  
Field Gradient ◽  
Molecular Sieve ◽  
Pore Space ◽  
Pulsed Field Gradient Nmr ◽  
Pulsed Field ◽  
Zeolite Nay ◽  
Self Diffusion ◽  
Methane Diffusion ◽  
Pfg Nmr ◽  
Sieve Pores

ABSTRACTNMR measurements of sorbate mobility in zeolites are especially attractive because of their capability of measuring multicomponent and anisotropic self-diffusion. We have recently reported the application of the pulsed field gradient NMR technique using very large zeolite crystals to study how easily methane can diffuse when we attempt to slow its migration by crowding the pore space. Here we analyze the implications of these PFG NMR experiments involving (i) ethylene blocking of methane in zeolite NaY; and (ii) methane molecules trying to pass one another in the molecular sieve A1PO4-5.

Controlling Gas Selectivity in Molecular Porous Liquids by Tuning the Cage Window Size

2019 ◽  
Author(s):  
Benjamin Egleston ◽  
Konstantin V. Luzyanin ◽  
Michael C. Brand ◽  
Rob Clowes ◽  
Michael E. Briggs ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Synthesis ◽  
Field Gradient ◽  
Window Size ◽  
Standard Approach ◽  
Porous Solids ◽  
Pulsed Field Gradient Nmr ◽  
Pulsed Field ◽  
Cage Molecules ◽  
Gas Selectivity

Control of pore window size is the standard approach for tuning gas selectivity in porous solids. Here, we present the first example where this is translated into a molecular porous liquid formed from organic cage molecules. Reduction of the cage window size by chemical synthesis switches the selectivity from Xe-selective to CH<sub>4</sub>-selective, which is understood using <sup>129</sup>Xe, <sup>1</sup>H, and pulsed-field gradient NMR spectroscopy.

Controlling Gas Selectivity in Molecular Porous Liquids by Tuning the Cage Window Size

2019 ◽  
Author(s):  
Benjamin Egleston ◽  
Konstantin V. Luzyanin ◽  
Michael C. Brand ◽  
Rob Clowes ◽  
Michael E. Briggs ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Synthesis ◽  
Field Gradient ◽  
Window Size ◽  
Standard Approach ◽  
Porous Solids ◽  
Pulsed Field Gradient Nmr ◽  
Pulsed Field ◽  
Cage Molecules ◽  
Gas Selectivity

Control of pore window size is the standard approach for tuning gas selectivity in porous solids. Here, we present the first example where this is translated into a molecular porous liquid formed from organic cage molecules. Reduction of the cage window size by chemical synthesis switches the selectivity from Xe-selective to CH<sub>4</sub>-selective, which is understood using <sup>129</sup>Xe, <sup>1</sup>H, and pulsed-field gradient NMR spectroscopy.

Lithium-ion diffusivity in complex hydrides: Pulsed-field-gradient NMR studies of LiLa(BH4)3Cl, Li3(NH2)2I and Li-1-CB9H10

2021 ◽  
Vol 362 ◽  
pp. 115585
Author(s):  
A.V. Skripov ◽  
G. Majer ◽  
O.A. Babanova ◽  
R.V. Skoryunov ◽  
A.V. Soloninin ◽  
...  
Keyword(s):  
Field Gradient ◽  
Lithium Ion ◽  
Nmr Studies ◽  
Pulsed Field Gradient Nmr ◽  
Pulsed Field ◽  
Complex Hydrides

Influence of Water on Diffusion in Imidazolium-Based Ionic Liquids: A Pulsed Field Gradient NMR study

2009 ◽  
Vol 113 (18) ◽  
pp. 6353-6359 ◽  
Author(s):  
Amrish Menjoge ◽  
JaNeille Dixon ◽  
Joan F. Brennecke ◽  
Edward J. Maginn ◽  
Sergey Vasenkov
Keyword(s):  
Ionic Liquids ◽  
Field Gradient ◽  
Pulsed Field Gradient Nmr ◽  
Pulsed Field ◽  
Nmr Study ◽  
Influence Of Water

Probing Ionic Association on Metal Oxide Clusters by Pulsed Field Gradient NMR Spectroscopy: The Example of Sn12–Oxo Clusters

2004 ◽  
Vol 10 (7) ◽  
pp. 1747-1751 ◽  
Author(s):  
François Ribot ◽  
Virginie Escax ◽  
José C. Martins ◽  
Monique Biesemans ◽  
Laurent Ghys ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Metal Oxide ◽  
Field Gradient ◽  
Ionic Association ◽  
Pulsed Field Gradient Nmr ◽  
Pulsed Field ◽  
Metal Oxide Clusters
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