From The DNP-NMR Blog:
Insights into the Catalytic Activity of Nitridated Fibrous Silica (KCC-1) Nanocatalysts from15N and29Si NMR Spectroscopy Enhanced by Dynamic Nuclear Polarization
Lilly Thankamony, A.S., et al., Insights into the Catalytic Activity of Nitridated Fibrous Silica (KCC-1) Nanocatalysts from15N and29Si NMR Spectroscopy Enhanced by Dynamic Nuclear Polarization. Angewandte Chemie, 2015. 127(7): p. 2218-2221.
http://dx.doi.org/10.1002/ange.201406463
Fibrous nanosilica (KCC-1) oxynitrides are promising solid-base catalysts. Paradoxically, when their nitrogen content increases, their catalytic activity decreases. This counterintuitive observation is explained here for the first time using 15N-solid-state NMR spectroscopy enhanced by dynamic nuclear polarization.
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