Line narrowing reaction characterization

The approach used in this thesis to study the chain-length dependence of termination reactions can be characterized as empirical and model-independent. The basic thought behind this study is that when using single-pulse pulsed-laser initiation, the radical chain-length distribution is so narrow that a monodispersity assumption for this radical population seems to be justified. In this line of thought, two novel kinetic analyses have been presented which should enable the direct model-independent measurement of these microscopic chain-length... 

This made it possible to identify surface hydroxyl groups in zeolites [4,5], characterize Brpnstead acidity [6], porosity, and adsorption sites with adsorbed probe molecules [7-13]. Later on, the adsorbed reaction products were characterized with MAS NMR [14], which provided a stimulus of application of MAS NMR to characterize the chemical reaction occurrence on zeolites [15] with the aim of unraveling the mechanisms of the reactions. Note, however, that researchers sometimes do not have to narrow the NMR signals with MAS to characterize the solids. For example, analysis of the line shape evolution with temperature for wide-line NMR spectra of adsorbates in zeolites affords a valuable information on the adsorbate molecular dynamics [16,17],... 

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