Surface enhanced nuclear magnetic resonance relaxation mechanisms and their significance in chemical engineering applications

BE Kinn, TR Myers, AM Allgeier - Current Opinion in Chemical Engineering, 2019 - Elsevier
Highlights•NMR relaxometry mechanisms relevant to porous material characterization
include paramagnetic coupling, dipolar coupling and diffusion processes.•Determination of …

Toward Quantifying the Chemical Sensitivity of Nuclear Spin Surface Relaxivity in Mesoporous Media

S Dong, L Liu, NNA Ling, EF May, ML Johns… - Langmuir, 2024 - ACS Publications
Low-field nuclear magnetic resonance (NMR) relaxation is a promising non-invasive
technique for characterizing solid–liquid interactions within functional porous materials …

Effect of magnetic pore surface coating on the NMR relaxation and diffusion signal in quartz sand

M Duschl, A Pohlmeier, TI Brox… - Magnetic …, 2016 - Wiley Online Library
Magnetic impurities are ubiquitous in natural porous media such as sand and soil. They
generate internal magnetic field gradients because of increased magnetic susceptibility …

Relaxation mechanisms and shales

KE Washburn - Concepts in Magnetic Resonance Part A, 2014 - Wiley Online Library
Unconventional petroleum resources present in shales have recently seen increased
development due to growing demand for energy worldwide, declining conventional …

Nuclear magnetic resonance surface relaxation mechanisms of kerogen

B Zhang, H Daigle - Geophysics, 2017 - library.seg.org
Nuclear magnetic resonance (NMR) relaxometry is an excellent tool for probing the
interactions between solid pore surface and pore fluids in porous media. Surface relaxation …

Reliable surface area assessment of wet and dry nonporous and nanoporous particles: nuclear magnetic resonance relaxometry and gas physisorption

C Schlumberger, L Sandner, A Michalowski… - Langmuir, 2023 - ACS Publications
The reliable assessment of surface area is extremely important for many applications, eg,
catalysis, separation, and energy storage/conversion. Within this context, major progress …

Exploring catalyst passivation with NMR relaxation

N Robinson, LF Gladden, C D'Agostino - Faraday Discussions, 2017 - pubs.rsc.org
NMR relaxation has recently emerged as a novel and non-invasive tool for probing the
surface dynamics of adsorbate molecules within liquid-saturated mesoporous catalysts. The …

[HTML][HTML] Functional group resolved NMR relaxation of 3-carbon adsorbates in mesoporous alumina

N Robinson, C D'agostino, ML Johns - Magnetic Resonance Letters, 2023 - Elsevier
NMR relaxation analysis provides a unique and non-invasive probe of fluid dynamics within
porous materials, and may be applied to the interpretation of a wide variety of material and …

Temperature effect on NMR surface relaxation in rocks for well logging applications

S Godefroy, M Fleury, F Deflandre… - The Journal of Physical …, 2002 - ACS Publications
We present nuclear spin-relaxation experiments, at various temperatures and Larmor
frequencies for water and oil confined in a series of calibrated porous media and various …

Interpretation of NMR relaxation as a tool for characterising the adsorption strength of liquids inside porous materials

C D'Agostino, J Mitchell, MD Mantle… - … –A European Journal, 2014 - Wiley Online Library
Nuclear magnetic resonance (NMR) relaxation times are shown to provide a unique probe
of adsorbate–adsorbent interactions in liquid‐saturated porous materials. A short theoretical …