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Updated: Aug 6, 2026

Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
Platinum Ensemble Heterogeneity Enables Efficient Solvent-Free Hydrogen Production
Chengyu Li1, Yong Wang1, Zezheng Hao2
1Beijing National Laboratory for Molecular Sciences, New Cornerstone Science Laboratory, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
Platinum catalysts on nanodiamond supports boost hydrogen production from liquid organic hydrogen carriers (LOHCs). This novel catalyst design enhances dehydrogenation efficiency and stability for safer hydrogen storage and transport.
Area of Science:
- Materials Science
- Catalysis
- Chemical Engineering
Background:
- Liquid organic hydrogen carriers (LOHCs) offer safe hydrogen storage but face challenges.
- Sluggish dehydrogenation kinetics and catalyst deactivation limit practical LOHC applications.
Purpose of the Study:
- To develop a high-performance catalyst for efficient LOHC dehydrogenation.
- To enhance hydrogen production from cycloalkane-based LOHCs.
Main Methods:
- Rational design of platinum catalysts supported on curved graphene-coated nanodiamond (ND@G).
- Integration of subnanometric Pt clusters (Ptn) and 3D Pt clusters (Ptc) on the support (Ptn+c/ND@G).
- Mechanistic investigations and density functional theory (DFT) calculations.
Main Results:
- Ptn+c/ND@G catalysts exhibited significantly enhanced hydrogen production from bicyclohexyl and other cycloalkanes.
- The catalyst demonstrated superior performance compared to single-component catalysts or physical mixtures.
- Excellent recyclability and stability were observed under solvent-free conditions.
Conclusions:
- Synergistic cooperation between Ptn and Ptc ensembles on the ND@G support enhances dehydrogenation.
- Support-mediated hydrogen spillover mitigates poisoning and regenerates active sites, boosting overall performance.
- This work provides a design principle for advanced LOHC dehydrogenation catalysts via ensemble engineering and hydrogen management.
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