1 research outputs found
Atomically Dispersed Dual Metal Sites Boost the Efficiency of Olefins Epoxidation in Tandem with CO<sub>2</sub> Cycloaddition
Tandem catalysis provides an economical and energy-efficient
process
for the production of fine chemicals. In this work, we demonstrate
that a rationally synthesized carbon-based catalyst with atomically
dispersed dual Fe–Al sites (ADD-Fe-Al) achieves superior catalytic
activity for the one-pot oxidative carboxylation of olefins (conversion
∼97%, selectivity ∼91%), where the yield of target product
over ADD-Fe-Al is at least 62% higher than that of monometallic counterparts.
The kinetic results reveal that the excellent catalytic performance
arises from the synergistic effect between Fe (oxidation site) and
Al sites (cycloaddition site), where the efficient CO2 cycloaddition
with epoxides in the presence of Al sites (3.91 wt %) positively shifts
the oxidation equilibrium to olefin epoxidation over Fe sites (0.89
wt %). This work not only offers an advanced catalyst for oxidative
carboxylation of olefins but also opens up an avenue for the rational
design of multifunctional catalysts for tandem catalytic reactions
in the future