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An extensive series of 30 Cu exchanged zeolites and Cu impregnated silicas and aluminas have been tested in their capacities to stabilize the bis(μ-oxo)dicopper core. This core shows a remarkably activity towards methane, as it selectively hydroxylates methane into methanol at the low temperature of 125°C. UV–vis spectroscopy is an easy approach to detect the presence of this bis(μ-oxo)dicopper core...
The reaction mechanisms of the H-exchange and methylation of benzene catalyzed by various Lewis acid catalysts are investigated through DFT calculations. The reactions are concerted and no stable charged intermediates are formed. Reaction rate constants and HSAB-based reactivity descriptors are calculated to compare the activity of the different Lewis acids. AlCl 3 is always more active than...
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