Synthesis of Pellet-Based Pd/C Egg-Shell Catalysts for Reversible Hydrogen Storage in Formate/Bicarbonate
We report the scalable synthesis of egg-shell Pd/C pellet catalysts for the reversible formate/bicarbonate hydrogen-storage cycle. This system is inherently safe, nontoxic and allows for the easy control of hydrogen storage and release through pressure or temperature. A simple synthesis protocol with oxalic acid as a chelating additive furnishes a uniform and thin Pd shell. The optimized catalyst is active in both half-reactions, delivering hydrogen release rates up to 17.4 L h<sup>-1</sup> and 80 L of CO-free H<sub>2</sub> and TON/TOF values comparable to state-of-the-art powder systems while providing the handling advantages of pellets. Insights into catalyst reactivation strategies are provided to improve the stability of the optimal material during repeated use.
Authors
- Carolin A. M. Stein
- Henrik Junge (ORCID: https://orcid.org/0000-0002-7603-1984)
- Carsten Kreyenschulte (ORCID: https://orcid.org/0000-0002-2371-4909)
- Ali M. Abdel‐Mageed (ORCID: https://orcid.org/0000-0003-4160-0611)
- Rui Sang (ORCID: https://orcid.org/0000-0003-2002-7078)
- Katja Neubauer (ORCID: https://orcid.org/0009-0007-0301-8811)
- Peter Sponholz (ORCID: https://orcid.org/0000-0001-5756-0322)
- Sebastian Wohlrab (ORCID: https://orcid.org/0000-0003-1407-7263)
- Jonas Massa (ORCID: https://orcid.org/0009-0005-5188-8462)
- Volkan Turan (ORCID: https://orcid.org/0009-0002-2247-0823)
- Professor Dr. M. Beller
- Stephan Bartling
- Hanan Atia
- Hung Mac
- Lorenz Dittrich
Institutions
- Hanseatic University Rostock (DE)
- Leibniz Institute for Catalysis (DE)
Publication Details
- Journal
- ACS Sustainable Chemistry & Engineering
- Published
- 2026-01-02
- DOI
- https://doi.org/10.1021/acssuschemeng.5c11492
- Primary Topic
- Carbon dioxide utilization in catalysis
- Type
- article
- Field-Weighted Citation Impact
- 0.00