scholarly journals Direct Observation of Supercritical Fluids in Nanospace by Means of High-Pressure NMR Spectroscopy

2006 ◽  
Vol 16 (2) ◽  
pp. 131-136
Author(s):  
Yusuke HIEJIMA ◽  
Mitsuhiro KANAKUBO
Keyword(s):  
High Pressure ◽  
Nmr Spectroscopy ◽  
Direct Observation ◽  
Supercritical Fluids

HIGH-PRESSURE BURNING RATE MEASUREMENTS BY DIRECT OBSERVATION

2019 ◽  
Vol 18 (3) ◽  
pp. 213-227
Author(s):  
Greg Derk ◽  
Grant A. Risha ◽  
Eric Boyer ◽  
Richard A. Yetter
Keyword(s):  
High Pressure ◽  
Burning Rate ◽  
Direct Observation

Conversion of Lignocellulosic Biomass to Reducing Sugars in High Pressure and Supercritical Fluids: Greener Alternative for Biorefining of Renewables

2021 ◽  
Vol 5 (4) ◽  
pp. 2000275
Author(s):  
Pawan Kumar ◽  
Azadeh Kermanshahi‐pour ◽  
Satinder Kaur Brar ◽  
Marianne Su‐Ling Brooks
Keyword(s):  
High Pressure ◽  
Lignocellulosic Biomass ◽  
Supercritical Fluids ◽  
Reducing Sugars

A new high-pressure optical membrane module for direct observation of seawater RO membrane fouling and cleaning

2010 ◽  
Vol 364 (1-2) ◽  
pp. 149-156 ◽  
Author(s):  
Xiaofei Huang ◽  
Gregory R. Guillen ◽  
Eric M.V. Hoek
Keyword(s):  
High Pressure ◽  
Direct Observation ◽  
Membrane Fouling ◽  
Membrane Module ◽  
Ro Membrane

Intermolecular Interactions of Xe Atoms Confined in One-dimensional Nanochannels of Tris(o-phenylenedioxy)cyclotriphosphazene as Studied by High-pressure 129Xe NMR

2003 ◽  
Vol 58 (12) ◽  
pp. 727-734 ◽  
Author(s):  
Hirokazu Kobayashi ◽  
Takahiro Ueda ◽  
Keisuke Miyakubo ◽  
Taro Eguchi
Keyword(s):  
High Pressure ◽  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Pressure Dependence ◽  
Average Distance ◽  
Chemical Shift Tensor ◽  
Axially Symmetric ◽  
One Dimensional ◽  
129Xe Nmr ◽  
The One

The pressure dependence of the 129Xe chemical shift tensor confined in the Tris(o-phenylenedioxy) cyclotriphosphazene (TPP) nanochannel was investigated by high-pressure 129Xe NMR spectroscopy. The observed 129Xe spectrum in the one-dimensional TPP nanochannel (0.45 nm in diameter) exhibits a powder pattern broadened by an axially symmetric chemical shift tensor. As the pressure increases from 0.02 to 7.0 MPa, a deshielding of 90 ppm is observed for the perpendicularcomponent of the chemical shift tensor δ⊥, whereas a deshielding of about 30 ppm is observed for the parallel one, δ‖. This suggests that the components of the chemical shift tensor, δ‖ and δ⊥, are mainly dominated by the Xe-wall and Xe-Xe interaction, respectively. Furthermore, the effect of helium, which is present along with xenon gas, on the 129Xe chemical shift is examined in detail. The average distance between the Xe atoms in the nanochannel is estimated to be 0.54 nm. This was found by using δ⊥ at the saturated pressure of xenon, and comparing the increment of the chemicalshift value in δ⊥ to that of a β -phenol/Xe compound.

scholarly journals Monitoring Unfolding of Titin I27 Single and Bi Domain with High-Pressure NMR Spectroscopy

2018 ◽  
Vol 115 (2) ◽  
pp. 341-352 ◽  
Author(s):  
Isaline Herrada ◽  
Philippe Barthe ◽  
Marisa Vanheusden ◽  
Karine DeGuillen ◽  
Léa Mammri ◽  
...  
Keyword(s):  
High Pressure ◽  
Nmr Spectroscopy

Direct Observation of Fluid Mass Transfer Resistance in Porous Media by NMR Spectroscopy

1998 ◽  
Vol 37 (13-14) ◽  
pp. 1882-1885 ◽  
Author(s):  
Ulrich Tallarek ◽  
Dagmar van Dusschoten ◽  
Henk Van As ◽  
Georges Guiochon ◽  
Ernst Bayer
Keyword(s):  
Mass Transfer ◽  
Porous Media ◽  
Nmr Spectroscopy ◽  
Direct Observation ◽  
Mass Transfer Resistance ◽  
Transfer Resistance ◽  
Fluid Mass
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