Spectroscopic {methods|techniques|strategies|approaches|procedures|solutions} enabling real-time monitoring of dynamic surface processes are a prerequisite for identifying how a catalyst triggers a chemical reaction. We present an in situ photoluminescence spectroscopy {approach|method|strategy} for probing the thermo-catalytic 2-propanol oxidation {over|more than} mesostructured Co3O4 nanowires. {Under|Below|Beneath} oxidative {conditions|circumstances|situations}, a distinct blue emission at ~420 nm is detected that increases with temperature {up to|as much as} 280 °C, with an intermediate maximum at 150 °C. Catalytic {data|information} gained {under|below|beneath} comparable {conditions|circumstances|situations} show that this course of photoluminescence intensity precisely follows the conversion of 2-propanol {and the|and also the|as well as the|along with the|plus the} production of acetone. The blue emission is assigned {to the|towards the|for the} radiative recombination of unbound acetone molecules, the n – π* transition of {which is|that is|which can be} selectively excited by a wavelength of 270 nm. These findings open a pathway for studying thermo-catalytic processes {via|by way of|through|by means of} in situ photoluminescence spectroscopy thereby gaining {information about|details about|information regarding} the {performance|overall performance|efficiency|functionality} {of the|from the|in the|on the|with the|of your} catalyst {and the|and also the|as well as the|along with the|plus the} formation of intermediate {products|goods|items|merchandise|solutions}. 2090927-90-3 Order 4-Bromo-2-ethylpyridine web PMID:23771862
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