Engineering the Distinct Structure Interface of Subnano-alumina Domains on Silica for Acidic Amorphous Silica–Alumina toward Biorefining

Autor: Zichun Wang, Robert Buechel, Yijiao Jiang, Lizhuo Wang, Haimei Xu, Patrice Castignolles, Marianne Gaborieau, Olivier Lafon, Jean-Paul Amoureux, Michael Hunger, Alfons Baiker, Jun Huang

Publikováno v: JACS Au, Vol 1, Iss 3, Pp 262-271 (2021)

Externí odkaz: https://doaj.org/article/4197494454a8462f8ab20984ea5c36a0

Brønsted acid sites based on penta-coordinated aluminum species

Autor: Zichun Wang, Yijiao Jiang, Olivier Lafon, Julien Trébosc, Kyung Duk Kim, Catherine Stampfl, Alfons Baiker, Jean-Paul Amoureux, Jun Huang

Publikováno v: Nature Communications, Vol 7, Iss 1, Pp 1-5 (2016)

Until now, it has been believed that Brønsted acid sites in amorphous silica-alumina are formed from only tetra-coordinated (AlIV) sites. Here, the authors use 27Al-{1H} correlation NMR experiments to identify a new AlV-based Brønsted acid site, wi

Externí odkaz: https://doaj.org/article/82c733f984ad403590c12d0a2c013984

Advances in the characterization of inorganic solids using NMR correlation experiments

Autor: Andrew G.M. Rankin, Frédérique Pourpoint, Nghia Tuan Duong, Laurent Delevoye, Jean-Paul Amoureux, Olivier Lafon

Publikováno v: Reference Module in Chemistry, Molecular Sciences and Chemical Engineering
Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, Elsevier, 2023, ⟨10.1016/B978-0-12-823144-9.00192-8⟩
Comprehensive Inorganic Chemistry III ISBN: 9780128231531

International audience; As a local characterization technique endowed with atomic resolution, solid-state NMR spectroscopy provides unique insights on the atomic-level structure and dynamics of inorganic and hybrid materials. In particular, two-dimen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::698f4311bdec68957084ba7e9f00f5c6
https://cnrs.hal.science/hal-03995696/file/220820_OL_correlation.pdf

Improved resolution for spin-3/2 isotopes in solids via the indirect NMR detection of triple-quantum coherences using the T-HMQC sequence

Autor: Racha Bayzou, Julien Trébosc, Ivan Hung, Zhehong Gan, Andrew Rankin, Olivier Lafon, Jean-Paul Amoureux

Publikováno v: Solid State Nuclear Magnetic Resonance
Solid State Nuclear Magnetic Resonance, 2022, Solid State Nuclear Magnetic Resonance, 122, pp.101835. ⟨10.1016/j.ssnmr.2022.101835⟩

International audience; The indirect NMR detection of quadrupolar nuclei in solids under magic-angle spinning (MAS) is possible with the through-space HMQC (heteronuclear multiple-quantum coherence) scheme incorporating the TRAPDOR (transfer of popul

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bfc02dd41326fd6bd7234d48fbf03b8
https://pubmed.ncbi.nlm.nih.gov/36308816

Indirect NMR detection via proton of nuclei subject to large anisotropic interactions, such as

Autor: Racha, Bayzou, Julien, Trébosc, Ivan, Hung, Zhehong, Gan, Olivier, Lafon, Jean-Paul, Amoureux

Publikováno v: The Journal of chemical physics. 156(6)

Recently, the T-hetero-nuclear multiple quantum coherence (T-HMQC) sequence using the TRAPDOR (transfer of population in double resonance) recoupling has been introduced for the indirect detection via protons of quadrupolar nuclei with spin I = 1 (

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::027ed834da8f49a785b21c8494c962ac
https://pubmed.ncbi.nlm.nih.gov/35168357