[HTML][HTML] Dynamic nuclear polarization for sensitivity enhancement in modern solid-state NMR

ASL Thankamony, JJ Wittmann, M Kaushik… - Progress in nuclear …, 2017 - Elsevier
The field of dynamic nuclear polarization has undergone tremendous developments and
diversification since its inception more than 6 decades ago. In this review we provide an in …

Atomic layer deposition—Sequential self-limiting surface reactions for advanced catalyst “bottom-up” synthesis

J Lu, JW Elam, PC Stair - Surface Science Reports, 2016 - Elsevier
Catalyst synthesis with precise control over the structure of catalytic active sites at the atomic
level is of essential importance for the scientific understanding of reaction mechanisms and …

The atomic-level structure of cementitious calcium aluminate silicate hydrate

A Kunhi Mohamed, P Moutzouri… - Journal of the …, 2020 - ACS Publications
Despite use of blended cements containing significant amounts of aluminum for over 30
years, the structural nature of aluminum in the main hydration product, calcium aluminate …

Recent developments in MAS DNP-NMR of materials

AGM Rankin, J Trébosc, F Pourpoint… - Solid State Nuclear …, 2019 - Elsevier
Solid-state NMR spectroscopy is a powerful technique for the characterization of the atomic-
level structure and dynamics of materials. Nevertheless, the use of this technique is often …

BDPA-nitroxide biradicals tailored for efficient dynamic nuclear polarization enhanced solid-state NMR at magnetic fields up to 21.1 T

D Wisser, G Karthikeyan, A Lund… - Journal of the …, 2018 - ACS Publications
Dynamic nuclear polarization (DNP) solid-state nuclear magnetic resonance (NMR) has
developed into an invaluable tool for the investigation of a wide range of materials …

Active sites in supported single-site catalysts: An NMR perspective

C Copéret, WC Liao, CP Gordon… - Journal of the American …, 2017 - ACS Publications
Development of well-defined heterogeneous catalysts requires detailed structural
characterization of active sites, an essential step toward establishing structure–activity …

Pentacoordinated aluminum species: New frontier for tailoring acidity-enhanced silica–alumina Catalysts

Z Wang, Y Jiang, A Baiker, J Huang - Accounts of Chemical …, 2020 - ACS Publications
Conspectus Silica–alumina catalysts, including zeolites and amorphous silica–aluminas
(ASAs), are among the most widely used solid acid catalysts and supports to produce …

Dynamic nuclear polarization at 40 kHz magic angle spinning

SR Chaudhari, P Berruyer, D Gajan, C Reiter… - Physical Chemistry …, 2016 - pubs.rsc.org
DNP-enhanced solid-state NMR spectroscopy under magic angle spinning (MAS) is rapidly
develo** into a powerful analytical tool to investigate the structure of a wide range of solid …

Natural Abundance 17O DNP NMR Provides Precise O−H Distances and Insights into the Brønsted Acidity of Heterogeneous Catalysts

FA Perras, Z Wang, P Naik, II Slowing… - Angewandte …, 2017 - Wiley Online Library
Heterogeneous Brønsted acid catalysts are tremendously important in industry, particularly
in catalytic cracking processes. Here we show that these Brønsted acid sites can be directly …

Sub-monolayer control of mixed-oxide support composition in catalysts via atomic layer deposition: selective hydrogenation of cinnamaldehyde promoted by (SiO2 …

Z Weng, F Zaera - ACS Catalysis, 2018 - ACS Publications
Alumina-supported platinum catalysts have been modified with silicon oxide thin films grown
using atomic layer deposition (ALD) in order to tune the acid–base and electronic properties …