Pd-modified LaNi5 nanoparticles for efficient hydrogen storage in a carbazole type liquid organic hydrogen carrier

被引：0

作者：

Yu, Hongen ^{[1
]}

Wu, Yong ^{[1
]}

Chen, Shunpeng ^{[1
]}

Xie, Zewei ^{[1
]}

Wu, Yiman ^{[2
]}

Cheng, Nuo ^{[1
]}

Yang, Xue ^{[2
]}

Lin, Wei ^{[2
]}

Xie, Lei ^{[3
]}

Li, Xingguo ^{[1
]}

Zheng, Jie ^{[1
]}

机构：

[1] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci BNLMS, Beijing 100871, Peoples R China

[2] Sinopec Res Inst Petr Proc, Beijing 100083, Peoples R China

[3] Peking Univ, Sunan Inst Mol Engn, Changshu Hitech Ind Dev Zone, Suzhou 215500, Jiangsu, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2022年 / 317卷

关键词：

Hydrogen storage; Liquid organic hydrogen carriers; Metal hydride; Catalysis;

D O I：

暂无

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, we report the synthesis and catalytical property of a palladium catalyst loaded on a hydrogen storage support-Pd/LaNi5 in reversible hydrogen storage of N-ethylcarbazole (NEC). We prepare LaNi5 nanoparticles by the molten salt reduction method and use galvanic replacement to deposit a thin Pd layer on the surface. Catalyzed by 1 wt%Pd/LaNi5, NEC absorbs 5.5 wt% H-2 in 0.7 h at 453 K and 7 MPa H-2,H- and perhydro-NEC desorbs 5.5 wt% in 2.1 h at 473 K and 0.1 MPa H-2, which significantly outperforms Pd/Al2O3 catalyst with the same Pd loading. The significantly promoted catalytic performance is attributed to the ample lattice hydrogen bonding sites and fast bulk hydrogen diffusion kinetics of LaNi5, which breaks the limitation of active hydrogen bonding sites due to the competitive adsorption of hydrogen and the organic molecule in surface catalysis. The active role of the lattice hydrogen bonding sites makes hydrogen storage materials highly attractive for hydrogen-related catalysis

引用

页数：9