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Magic angle spinning nuclear magnetic resonance apparatus and process for high-resolution in situ investigations
Magic angle spinning nuclear magnetic resonance apparatus and process for high-resolution in situ investigations
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机译：魔角旋转核磁共振设备和高分辨率原位研究方法
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摘要
A continuous-flow (CF) magic angle sample spinning (CF-MAS) NMR rotor and probe are described for investigating reaction dynamics, stable intermediates/transition states, and mechanisms of catalytic reactions in situ. The rotor includes a sample chamber of a flow-through design with a large sample volume that delivers a flow of reactants through a catalyst bed contained within the sample cell allowing in-situ investigations of reactants and products. Flow through the sample chamber improves diffusion of reactants and products through the catalyst. The large volume of the sample chamber enhances sensitivity permitting in situ 13C CF-MAS studies at natural abundance.
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机译：描述了一种连续流（CF）魔角样品旋转（CF-MAS）NMR转子和探针，用于研究反应动力学，稳定的中间体/过渡态以及原位催化反应的机理。转子包括具有大样品体积的流通式样品室，该样品室将反应物流通过样品池中所含的催化剂床输送，从而允许对反应物和产物进行原位研究。通过样品室的流动可改善反应物和产物通过催化剂的扩散。较大的样品室容积提高了灵敏度，允许在自然丰度下进行 13 C CF-MAS原位研究。
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