Synthesis of Pellet-Based Pd/C Egg-Shell Catalysts for Reversible Hydrogen Storage in Formate/Bicarbonate

ACS Sustainable Chemistry & Engineering 2026 Open access

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Authors: Carolin A. M. Stein, Jonas Massa, Katja Neubauer, Stephan Bartling, Carsten Robert Kreyenschulte, Hanan Atia, Lorenz Dittrich, Hung Mac, Rui Sang, Volkan Turan, Peter Sponholz, Ali Mohamed Abdel-Mageed
+3 more Sebastian Wohlrab, Henrik Junge, Matthias Beller
DOI: 10.1021/acssuschemeng.5c11492
Cited by: 0
References: 46

Abstract

High Resolution Image Download MS PowerPoint Slide 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 –1 and 80 L of CO-free H 2 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.

Fields of Study & Subjects

Carbon dioxide utilization in catalysis Hydrogen Storage and Materials Catalysts for Methane Reforming

Publication details

Journal / source
ACS Sustainable Chemistry & Engineering
Publisher
American Chemical Society (ACS)
Volume
14
Issue
2
Pages
1195–1206
Publication date
2 January 2026
Language
EN