Li, X., Wang, J., Teong, S. P., Chan, S. P., & Zhang, Y. (2025). Durable and superhydrophobic hydrogen elimination catalysts for enhanced hydrogen safety. International Journal of Hydrogen Energy, 115, 93–100. https://doi.org/10.1016/j.ijhydene.2025.02.474
Abstract:
The proliferation of hydrogen environments driven by the advancement of hydrogen energy and organic hydrogenation synthesis processes necessitates efficient and environmentally friendly methods for hydrogen elimination. Recombination of hydrogen with oxygen via catalysis to form water stands as the most effective means of eliminating hydrogen from the environment and gas streams. However, traditional catalysts such as Pt or Pt–Pd supported on metal oxides are prone to deactivation due to water poisoning. This persistent technical challenge underscores the need for innovative solutions. In this study, we propose a novel approach centred on the development of a superhydrophobic catalyst capable of eliminating hydrogen gas at ambient temperature while exhibiting remarkable resistance to water poisoning. The distinctive feature of this catalyst lies in its exceptional water-repellent properties, facilitating efficient catalysis for hydrogen-oxygen recombination. Our innovative methodology involves leveraging superhydrophobic polypropylene microspheres (PPMS) either as a direct catalyst support or to create a superhydrophobic environment for existing catalysts through PPMS blending. By obviating the need for additional heating to vaporize the water produced, the catalyst can operate effectively even in high humidity conditions at room temperature, thereby reducing equipment and energy costs. Furthermore, our original synthesis method for PPMS from discarded polypropylene not only holds promise for reducing catalyst costs but also contributes positively to environmental sustainability by repurposing waste plastic.
License type:
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Funding Info:
This research / project is supported by the National Research Foundation - Campus for Research Excellence and Technological Enterprise (CREATE) programme (Development of advanced catalysts for electrochemical carbon abatement)
Grant Reference no. : 370184872