首页|Preparation of a zeolite-palladium composite membrane for hydrogen separation:Influence of zeolite film on membrane stability

Preparation of a zeolite-palladium composite membrane for hydrogen separation:Influence of zeolite film on membrane stability

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With the development of hydrogen energy,palladium-based membranes have been widely used in hydrogen separation and purification.However,the poor chemical stability of palladium composite membranes limits their commercial applications.In this study,a zeolite-palladium composite membrane with a sandwich-like structure was obtained by using a TS-1 zeolite film grown on the surface of palladium membrane.The membrane microstructure was characterized by SEM and EDX The effects of the TS-1 film on the hydrogen permeability and stability of palladium composite membrane were investigated in details.Benefited from the protection of the TS-1 zeolite film,the stability of palladium composite membrane was enhanced.The results indicate that the TS-1-Pd composite membrane was stable after eight cycles of the temperature exchange cycles between 773 K and 623 K.Especially,the loss of hydrogen permeance for TS-1-Pd composite membrane was much smaller than that of the pure palladium membrane when the membrane was tested in the presence of C3H6 atmosphere.It indicated that the TS-1-Pd composite membrane had better chemical stability in comparison with pure palladium membrane,owing to its sandwich-like structure.This work provides an efficient way for the deposition of zeolite film on palladium membrane to enhance the membrane stability.

Palladium membraneZeolite filmHydrogen separationStability

Hongmei Wu、Xinyu Liu、Yu Guo

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School of Chemical and Environmental Engineering,Liaoning University of Technology,Jinzhou 121001,China

Liaoning Revitalization Talents ProgramNatural Science Foundation of Liaoning ProvinceResearch funding project of Liaoning Provincial Education Department

XLYC20071712021-MS-321LJKZZ20220086

2024

10.1016/j.cjche.2024.01.011

中国化学工程学报(英文版)
中国化工学会

中国化学工程学报(英文版)

CSTPCDEI
影响因子：0.818
ISSN：1004-9541
年,卷(期)：2024.72(8)