1 research outputs found
Highly Efficient Au Nanocatalysts for Heterogeneous Continuous-Flow Reactions Using Hollow CeO<sub>2</sub> Microspheres as a Functional Skeleton
Hollow
Au/CeO<sub>2</sub> as a highly efficient and stable heterogeneous
catalyst is successfully used for a continuous-flow reaction. The
hollow CeO<sub>2</sub> microspheres with thicknesses of 21 nm as functional
supports can greatly improve the catalytic activity and stability
of the Au nanoparticles. The catalytic activity of hollow Au/CeO<sub>2</sub> catalysts is 4.5 times higher than the Au catalysts without
the hollow structure under the same reaction conditions for the reduction
of 4-nitrophenol. Meanwhile, the hollow structure also accelerates
the mass transfer of reactant for the continuous-flow system. A high
turnover number of 65.7 mol h<sup>β1</sup> mol<sub>Au</sub><sup>β1</sup> is yielded for hollow Au/CeO<sub>2</sub> catalysts
at a flow rate of 250 mL h<sup>β1</sup> with remarkable stability
for a continuous-flow 4-nitrophenol reduction reaction. The present
continuous-flow system exhibits a huge potential for the automation
treatment of pollutant 4-nitrophenol