scholarly journals Proton–deuterium exchange of acetone catalyzed in imidazolium-based ionic liquid–D2O mixtures

RSC Advances ◽  
2020 ◽  
Vol 10 (54) ◽  
pp. 32485-32489
Author(s):  
Astghik A. Shahkhatuni ◽  
Aleksan G. Shahkhatuni ◽  
Suren S. Mamyan ◽  
Valentine P. Ananikov ◽  
Arpine S. Harutyunyan
Keyword(s):  
Ionic Liquid ◽  
Nmr Spectroscopy ◽  
Deuterium Oxide ◽  
Deuterium Exchange

The reaction of the proton–deuterium exchange of acetone in imidazolium-based ionic liquid (IL)–deuterium oxide mixtures was studied in detail via NMR spectroscopy.

Insights into Ionic Liquid/Aromatic Systems from NMR Spectroscopy: How Water Affects Solubility and Intermolecular Interactions

ChemPlusChem ◽  
2019 ◽  
Vol 84 (7) ◽  
pp. 872-881 ◽  
Author(s):  
Noemí Delgado‐Mellado ◽  
Julián García ◽  
Francisco Rodríguez ◽  
Robin D. Rogers
Keyword(s):  
Ionic Liquid ◽  
Nmr Spectroscopy ◽  
Intermolecular Interactions ◽  
Aromatic Systems

Determination of the accessible hydroxyl groups in heat-treated Styrax tonkinensis (Pierre) Craib ex Hartwich wood by hydrogen-deuterium exchange and 2H NMR spectroscopy

Holzforschung ◽  
2007 ◽  
Vol 61 (5) ◽  
pp. 488-491 ◽  
Author(s):  
Le Xuan Phuong ◽  
Masato Takayama ◽  
Satoshi Shida ◽  
Yuji Matsumoto ◽  
Tetsuo Aoyagi
Keyword(s):  
Nmr Spectroscopy ◽  
Treated Wood ◽  
Deuterium Exchange ◽  
Fungal Resistance ◽  
Lower Amount ◽  
Hydroxyl Groups ◽  
Hydrogen Deuterium Exchange ◽  
Oh Groups ◽  
Heat Treated ◽  
Hydrogen Deuterium

Abstract A new approach based on hydrogen-deuterium exchange is proposed for measuring accessible OH groups in wood. The deuterium (D) exchanged for hydrogen in OH groups in wood was converted to D2O by combustion in oxygen gas then diluted in deionized water, and subsequently determined by 2H NMR spectroscopy. The amount of accessible OH groups in Styrax tonkinensis wood is approximately 6.8 mmol g-1. This measurement is very accurate, with an error of approximately 0.2 mmol g-1. Heat-treated wood has a lower amount of accessible OH groups than non-treated wood. This finding is in agreement with the decreased hygroscopicity of heat-treated wood and explains, at least partially, its increased fungal resistance.

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