Scalable Atomic-Layer Tailoring of Abundant Oxide Supports Unlocks Superior Interfaces for Low-Metal-Loading Dehydrogenation
- Authors
- Kwak, Yeonsu; Lee, YuJin; Moon, Seongeun; Lee, Kimoon; Ramadhani, Safira; On, EuiRim; Ahn, Changil; Hwang, SonJong; Sohn, Hyuntae; Jeong, Hyangsoo; Nam, Suk Woo; Yoon, Chang Won; Kim, Yongmin
- Issue Date
- 2024-11
- Publisher
- John Wiley & Sons Ltd.
- Citation
- Angewandte Chemie International Edition
- Abstract
- Liquid organic hydrogen carriers (LOHCs) offer a promising solution for global hydrogen infrastructure, but their practical application faces two key challenges: sluggish dehydrogenation processes and the reliance on catalysts with high noble metal loadings. This study presents a scalable approach to reduce noble metal usage while maintaining high catalytic activity. We synthesized an ultralow Pt content (0.1?wt?%) catalyst using γ-Al2O3-based pellet support with atomic layer deposition (ALD) of TiO2. Advanced characterization techniques reveal that the thin ALD-TiO2 shell provides a heterogeneous interface, confining electronically rich Pt-nanoparticle ensembles. The catalyst outperforms both equivalent Pt-content catalysts and a commercial 0.5?wt?% Pt/γ-Al2O3 catalyst in homocyclic LOHC dehydrogenation. This study provides insights into the beneficial role of ALD-engineered interfaces for catalytic supports and offers an efficient approach for scalable production of low-noble-metal-content catalysts, with implications for various catalytic processes.
- ISSN
- 1433-7851
- URI
- https://pubs.kist.re.kr/handle/201004/151176
- DOI
- 10.1002/anie.202417598
- Appears in Collections:
- KIST Article > 2024
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