ABSTRACT
This chapter presents a description of instrumentation specific for in situ nuclear magnetic resonance (NMR) experiments, namely, in situ flow probes and sample preparation devices suitable for magic-angle spinning (MAS) experiments. It reviews some of the literature through mid-1992 on the application of different in situ experimental modes to various catalytic problems. The chapter presents several brief examples of in situ MAS experiments and motivates a section on techniques for assigning resonances in in situ MAS experiments and the types of NMR experiments that are useful in these investigations. That discussion concludes with an example of some of the problems that can be encountered in attempting to reconcile in situ NMR and other types of in situ experiments performed under different conditions. The chapter also illustrates several approaches to the use of NMR to test reaction mechanisms.
