Research Progress

Researchers Develop Synergistic Catalysts of Ru single-atoms and Zeolite for High-efficiency Hydrogen Storage
date: 2022-09-28
Hydrogen energy is regarded as promising renewable energy to deal with the crises of energy resources. However, the development of hydrogen energy is greatly restricted by the safe and efficient storage and transportation of hydrogen. Therefore, it remains a great challenge to explore the feasibility of high-efficiency catalysts with low-cost in hydrogen storage under low temperature.

Motivated by such a challenge, a research team led by Prof. CHEN Xinqing at Shanghai Advanced Research Institute (SARI) of the Chinese Academy of Sciences developed a new strategy utilizing Ru single atoms and *BEA zeolite to synergistically catalyze hydrogen storage of liquid organic hydrogen carriers (LOHCs) with superior performance.

The research results were published in Applied Catalysis B: Environmental.

Atomically dispersed Ru supported on *BEA zeolite was prepared by deposition precipitation for LOHCs. It is found that highly dispersed Ru single-atoms boost hydrogen activation and the strong acid sites of zeolites promote the hydrogen spillover on the hydrogenation with N-heterocycles.

Moreover, the synergistic effect of Ru single atoms and *BEA zeolite is crucial for accelerating the hydrogenation rate and lowering the activation energy compared with traditional Ru-based catalysts.

The synergistic catalysis of Ru single-atoms and zeolite with the assistance of hydrogen spillover exhibited excellent hydrogenation activity of N-ethylcarbazole (NEC), N-propylcarbazole (NPC), and 2-methylindole (2-MID) at lower temperatures with lower Ru content (0.5 wt%).

The study of Ru single-atoms and zeolite synergistic catalysis provides a new strategy for the synergetic catalysis of zeolite-supported metal catalysts for fast hydrogen storage into aromatic LOHCs under mild conditions.

Hydrogenation performance of N-ethylcarbazole (NEC) of different catalysts and comparison results of literature 

(Image by SARI)

Cotact: CHEN Xinqing

Shanghai Advanced Research Institute