The recent findings on the fundamental understanding of the activity of carbon nitride-based materials in the hydrogen evolution reaction (HER) allow to design rationally the photocatalytic systems with improved activities....
C–H
activation of hydrocarbons is extremely challenging,
especially in short-chain hydrocarbons like propane. In industry,
propane is first converted to propylene mostly by steam cracking,
which is only oxidized to acetone in the cumene process, yielding
acetone and phenol. In this work, we show that the simple FeCl3 salt in acetonitrile photocatalyzes the oxidation of propane
to acetone at room temperature under aerobic conditions and visible-light
irradiation. We achieved 100% conversion of propane with 67% selectivity
in acetone after 4 h of irradiation and TON up to 600. Mechanistic
studies, including electrospray ionization mass spectrometry, Mössbauer,
and electroparamagnetic resonance spectroscopy, concluded that the
reaction is driven by chlorine radicals generated by Fe–Cl
bond photolysis. These results not only hold promise for the development
of solar-based oxidation of hydrocarbons but more importantly also
disclose deeper insights into the largely overlooked photochemistry
of FeCl3.
We report on a new iron (iii)-cyamelurate-based coordination
polymer.
The new material based on a heptazine derivative was prepared in aqueous
medium and characterized by a variety of techniques including TGA,
FTIR, XRD, HRTEM, and STEM. Due to the high structural stability of
the complex in aqueous media, its heterogeneous Fenton-like catalytic
activity was evaluated using a model molecule. The results obtained
showed a high catalytic activity in both in basic and acid media.
The pseudo-first-order rate constants normalized by iron(III) concentrations
was approximately 1000 times higher than the result obtained for traditional
heterogeneous catalysts based on iron(III) oxyhydroxides. The best
observed catalytic activities were attributed to the increase in the
binding sites of Fe3+ ions, in parallel with the increased
exposure of the catalytic sites, leading to a higher atomic efficiency
of the reaction.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.