Karra Murthy D, Sutovich Kevin J, Mueller Karl T
The Pennsylvania State University, Department of Chemistry, 152 Davey Laboratory, University Park, Pennsylvania 16802, USA.
J Am Chem Soc. 2002 Feb 13;124(6):902-3. doi: 10.1021/ja017172w.
The interactions of Bronsted acid sites of H-Y (FAU) with perdeuterated trimethylphosphine oxide (TMPO-d9) are studied with a set of high-resolution solid-state NMR experiments. Double- and triple-resonance MAS NMR techniques (such as CP, TRAPDOR, and REDOR) verify that the lines in the 31P MAS NMR spectrum are indeed from TMPO interacting with Bronsted acid sites. Replacement of acidic hydrogens in the sodalite cages with sodium cations results in the disappearance of one of the peaks, leading to final assignments of the resonances.
通过一系列高分辨率固态核磁共振实验研究了H-Y（FAU）的布朗斯台德酸位点与全氘代三甲基氧化膦（TMPO-d9）之间的相互作用。双共振和三共振MAS NMR技术（如CP、TRAPDOR和REDOR）证实，31P MAS NMR谱中的谱线确实来自与布朗斯台德酸位点相互作用的TMPO。用钠离子取代方钠石笼中的酸性氢会导致其中一个峰消失，从而最终确定了共振峰的归属。
