Operando magnetic resonance imaging of product distributions within the pores of catalyst pellets during Fischer–Tropsch synthesis

Q Zheng, J Williams, LR van Thiel, SV Elgersma… - Nature Catalysis, 2023 - nature.com
The optimization of a heterogeneous catalytic process requires characterization of the
catalyst at industrially relevant conditions and length scales. Here we use magnetic …

Low-field functional group resolved nuclear spin relaxation in mesoporous silica

N Robinson, EF May, ML Johns - ACS Applied Materials & …, 2021 - ACS Publications
Solid–fluid interactions underpin the efficacy of functional porous materials across a diverse
array of chemical reaction and separation processes. However, detailed characterization of …

A pure shift-based nuclear magnetic resonance method for in-phase three-dimensional diffusion-ordered spectroscopy

H Zhan, M Hao, E Lin, Z Zheng, C Huang… - Analytical …, 2022 - ACS Publications
Diffusion-ordered nuclear magnetic resonance spectroscopy (DOSY) plays a vital role in
mixture studies. However, its applications to complex mixture samples are generally limited …

Low‐Field NMR Relaxation Analysis of High‐Pressure Ethane Adsorption in Mesoporous Silicas

K Yang, E Sadeghi Pouya, L Liu, M Li, X Yang… - …, 2022 - Wiley Online Library
Understanding the behaviour of short‐chain hydrocarbons confined to porous solids informs
the targeted extraction of natural resources from geological features, and underpins rational …

In Situ Characterization of Mixtures of Linear and Branched Hydrocarbons Confined within Porous Media Using 2D DQF-COSY NMR Spectroscopy

Q Zheng, MD Mantle, AJ Sederman, TA Baart… - Analytical …, 2022 - ACS Publications
The analysis of 1D anti-diagonal spectra from the projections of 2D double-quantum filtered
correlation spectroscopy NMR spectra is presented for the determination of the compositions …

[HTML][HTML] Utilizing 3D DOSY NMR in the characterization of organic compounds in coal chemical wastewater

H Ma, CM Pedersen, Q Zhao, S Jia, B Yuan… - Magnetic Resonance …, 2022 - Elsevier
Coal chemical wastewater (CCW) with the features of high toxicity and poor biodegradability
is a big issue in environmental remediation, posing a great threat to aquatic ecosystems and …

Magnetic Resonance Relaxation in Heterogeneous Materials is Analogous to First-Order Chemical Reaction

A Afrough - Transport in Porous Media, 2024 - Springer
Biological tissue, pharmaceutical tablets, wood, porous rocks, catalytic reactors, concrete,
and foams are examples of heterogeneous systems that may contain one or several fluid …

Physicochemical aspects of zwitterionic core-shell tecto dendrimers characterized by a thorough NMR investigation

C Song, Y Gao, J Chen, L Wang, I Bányai… - Colloids and Surfaces A …, 2021 - Elsevier
Core-shell tecto dendrimers (CSTDs) are a class of superstructured dendrimeric
nanoconstructs with similar structural characteristics and biomedical performances to the …

Improving efficiency of measuring individual 1H coupling networks by pure shift 2D J-resolved NMR spectroscopy

Y Lin, M Yan, J Su, Y Huang, J Feng… - The Journal of Chemical …, 2020 - pubs.aip.org
The 1 H coupling networks, including 1 H–1 H correlation and J coupling values, provide the
important information for structure elucidation and conformation analysis. However, the …

Overcoming NMR line broadening of nitrogen containing compounds: A simple solution

J Ma, Q Ye, RA Green, J Gurak, S Ayers… - Magnetic …, 2024 - Wiley Online Library
This study presents a straightforward solution to the challenge of elucidating the structures of
nitrogen containing compounds undergoing isomerization. When spectral line broadening …