Analysis of H-2 NMR spectra of water molecules on the surface of nano-silica material MCM-41: Deconvolution of the signal into a Lorentzian and a powder pattern line shapes

作者：Hassan J^*

来源：Physica B: Condensed Matter , 2012, 407(1): 179-183.

DOI：10.1016/j.physb.2011.10.023

• Water
• H-2 NMR
• Powder pattern line shape
• MCM-41
• Chemical exchange

Water H-2 NMR signal on the surface of nano-silica material MCM-41 consists of two overlapping resonances. The H-2 water spectrum shows a superposition of a Lorentzian line shape and the familiar NMR powder pattern line shape, indicating the existence of two spin components. Exchange occurs between these two groups. Decomposition of the two signals is a crucial starting point to study the exchange process. In this article we have determined these spin component populations along with other important parameters for the H-2 water NMR signal over a temperature range between 223 K and 343 K.

• 出版日期2012-1-1