Abstract
In situ MAS NMR has been demonstrated to be a superior technique for analyzing desorbed reactants, reacting adsorbates, intermediates and products. The results are useful for getting deeper insights into catalytic processes and reaction kinetics, and for re vealing the mechanisms of organic reactions. The utility of in situ NMR spectroscopy has demonstrated that this technique is an important means for the studies of catalytic organic reactions. The objective of this paper is to give a review on the generatio n of apparatus for in situ MAS NMR experiments, and to illustrate the applications of the in situ MAS NMR techniques in various important organic reactions catalyzed by solid catalysts. The typical reactions studied by in situ MAS NMR techniques include conversion of methanol to hydrocarbons (MTG process), aromatization of methane, ethylbenzene reaction over zeolite HMOR, observation of carbenium intermediates formation, and photocatalytic organic reaction.
Call for Papers in Thematic Issues
Advances of Heterocyclic Chemistry with Pesticide Activity
Global food safety and security will continue to be a global concern for the next 50 years and beyond. Plant diseases have had a significant impact on food safety and security throughout the entire food chain, from primary production to consumption. While conventional chemical pesticides have been traditionally used for ...read more
Calculation design of covalent/metal organic framework based catalysts
This research area combines theoretical computation and screening with machine learning for the design of covalent/metal organic framework-based catalysts, bridging the disciplines of organic chemistry, physical chemistry, computational chemistry, materials science, and machine learning. It covers several critical aspects: designing and synthesizing organic catalysts for improved performance, applying computational methods ...read more
Carbohydrates conversion in biofuels and bioproducts
Biomass pretreatment, hydrolysis, and saccharification of carbohydrates, and sugars bioconversion in biofuels and bioproducts within a biorefinery framework. Carbohydrates derived from woody biomass, agricultural wastes, algae, sewage sludge, or any other lignocellulosic feedstock are included in this issue. Simulation, techno-economic analysis, and life cycle analysis of a biorefinery process are ...read more
Catalytic C-H bond activation as a tool for functionalization of heterocycles
The major topic is the functionalization of heterocycles through catalyzed C-H bond activation. The strategies based on C-H activation not only provide straightforward formation of C-C or C-X bonds but, more importantly, allow for the avoidance of pre-functionalization of one or two of the cross-coupling partners. The beneficial impact of ...read more
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