Scalable Atomic-Layer Tailoring of Abundant Oxide Supports Unlocks Superior Interfaces for Low-Metal-Loading Dehydrogenation

Authors
Kwak, YeonsuLee, Yu­JinMoon, SeongeunLee, KimoonRamadhani, SafiraOn, Eui­RimAhn, Chang­ilHwang, Son­JongSohn, HyuntaeJeong, HyangsooNam, Suk WooYoon, Chang WonKim, 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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