Pd-Ce/AC catalyst with high productivity for direct synthesis of H2O2 at ambient temperature

In this study, a novel catalyst, Pd-Ce/AC catalyst, was synthesized for direct synthesis of H2O2. Compared with Pd/AC catalyst, Pd-Ce/AC catalyst showed higher H2O2 productivity (89 mol H2O2/kgcat.h) and lower H2O2 hydrogenation capacity. The characterization results indicated that the addition of Ce not only reduced the diameter of Pd particles, but also enhanced the content of Pd2+ in the final catalyst. It is expected that the increase of Pd dispersion and Pd2+ content is important for the enhancement of H2O2 productivity. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

The novel Pd-Ce/AC catalyst demonstrated higher H2O2 productivity and lower hydrogenation capacity compared to Pd/AC catalyst, likely attributed to the reduction in Pd particle size and enhancement of Pd2+ content by the addition of Ce.