Solid-state MAS NMR studies of Brønsted acid sites in zeolite H-Mordenite

Journal of the American Chemical Society
Hua HuoClare P Grey

Abstract

(17)O-(1)H double resonance NMR spectroscopy was used to study the local structure of zeolite H-Mordenite. Different contact times were used in cross-polarization magic angle spinning (CPMAS) NMR, CP rotational-echo double resonance (CP-REDOR) NMR, and heteronuclear correlation (HETCOR) NMR spectroscopy to distinguish between Brønsted acid sites with different O-H distances. The accessibility of the various Brønsted acid sites was quantified by adsorbing the basic probe molecule trimethylphosphine in known amounts. On the basis of these experiments, locations of different Brønsted acid sites in H-Mordenite (H-MOR) were proposed. The use of (17)O chemical shift correlations to help assign sites is discussed.

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Citations

Apr 9, 2013·Journal of the American Chemical Society·Darren H BrouwerBradley F Chmelka
Apr 27, 2016·Journal of the American Chemical Society·Na ShengFeng-Shou Xiao
Jul 3, 2016·The Journal of Chemical Physics·Siwar ChibaniMichael Badawi
Mar 2, 2017·Advanced Materials·Alessandro MarchettiXueqian Kong
Feb 23, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Stephanie ChapmanRobert Raja
Feb 1, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Anand Ramanathan, Bala Subramaniam
May 17, 2018·Physical Chemistry Chemical Physics : PCCP·Gabriel JeantelotJean-Marie Basset
Sep 10, 2020·Advanced Materials·Shenhui LiFeng Deng
Mar 29, 2014·Physical Chemistry Chemical Physics : PCCP·Sharon E AshbrookValerie R Seymour
Dec 16, 2019·The Journal of Chemical Physics·Farahnaz Maleki, Gianfranco Pacchioni
Aug 14, 2020·International Journal of Molecular Sciences·Kuizhi Chen
Mar 5, 2021·The Journal of Physical Chemistry Letters·Ke GongGuangjin Hou
Jun 25, 2021·Chemical Science·Sharon E AshbrookCameron M Rice
Aug 19, 2015·The Journal of Physical Chemistry Letters·Hiroshi YamazakiJunko N Kondo
Apr 21, 2020·ACS Omega·Meng XuLuming Peng
Sep 1, 2015·Chemistry of Materials : a Publication of the American Chemical Society·Rıza DervişoğluClare P Grey
Mar 14, 2020·Inorganic Chemistry·Chia-Hsin ChenDanielle Laurencin
Dec 26, 2019·Journal of the American Chemical Society·Suzi M PughSharon E Ashbrook

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