Synthesis of Pt-based LDH-Derived Nanoplatelets for catalytic decalin dehydrogenation

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL Catalysis Letters Pub Date : 2024-06-27 DOI:10.1007/s10562-024-04762-3

Fengli Wang, Mingsheng Luo, Qinglong Liu, Zhi Yang, Changke Shao, Qi Dong, Jieyu Chen

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Abstract

H₂ recycling between naphthalene, tetralin and decalin can be a promising application in chemical hydrogen storage, which is an important area for hydrogen fuel cell applications. Pt-based catalysts can be used in the dehydrogenation reaction for this purpose and support modification can effectively improve the catalytic performance. Effects of preparation method, Mg/Al molar ratio and metal composition on the Pt-based LDH-derived nanoplatelets catalysts for decalin dehydrogenation were systematically investigated in this work. The results out of this study indicated that the preparation method, Mg/Al molar ratio and metal composition exert significant effects on the microstructure and catalytic performance of the catalysts for decalin dehydrogenation. The Pt/MgAl-LDO catalyst with a Mg/Al molar ratio of 4 prepared by hydrothermal method yielded the largest specific surface area of 374 m²/g and the smallest average Pt particle size of 1.62 nm, which exhibited excellent H₂ production yield of 5.94 mol/g_Pt. These are mainly attributed to the sheet-like structure, large specific surface area and strong Pt-support interaction, leading to the superior Pt dispersion. This work provides a new approach for the preparation of low-cost and high-performance decalin dehydrogenation catalysts, which is of great significance for the application of liquid-phase organic hydride hydrogen storage technology.

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用于催化癸醛脱氢的铂基 LDH 衍生纳米微粒的合成

萘、四萘和癸醛之间的氢气再循环在化学储氢方面具有广阔的应用前景，这也是氢燃料电池应用的一个重要领域。为此，铂基催化剂可用于脱氢反应，而对其进行支撑改性可有效提高催化性能。本研究系统地考察了制备方法、镁/铝摩尔比和金属成分对铂基 LDH 衍生的癸醛脱氢纳米片催化剂的影响。研究结果表明，制备方法、镁/铝摩尔比和金属成分对癸醛脱氢催化剂的微观结构和催化性能有显著影响。水热法制备的 Mg/Al 摩尔比为 4 的 Pt/MgAl-LDO 催化剂比表面积最大，为 374 m2/g，铂平均粒径最小，为 1.62 nm，其 H2 产率高达 5.94 mol/gPt。这项工作为制备低成本、高性能的癸醛脱氢催化剂提供了一种新方法，对液相有机氢化物储氢技术的应用具有重要意义。

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.