Inhibition Effect of CO on Hydrogen Permeation Through a Pd/Al<sub>2</sub>O<sub>3</sub> Composite Membrane: A Comprehensive Study on Concentration Polarization and Competitive Adsorption Effect

Yue, Lei; Chen, Chao; Li, Jiamao; Xiao, Chengjian; Xiulong, Xia; Ran, Guangming; Fu, Xiaolong; Hou, Jingwei; Gong, Yu; Wang, Heyi

doi:10.1080/15361055.2020.1766274

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…The decrease in hydrogen flux increases with rising temperature when exposed to 10% N 2 , which proves a gradual increase in concentration polarization effect. There are two main effects of the temperature on concentration polarization [ 31 ]. On the one hand, higher temperature enhances the diffusion coefficient and improves the mass transfer behavior, thereby weakening the concentration polarization effect.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Flux Inhibition of Pd-Ru Membranes under Exposure to NH3

Chen,

Li,

Yin

et al. 2024

Membranes

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The hydrogen flux inhibition of Pd-Ru membranes under exposure to 1–10% NH3 at 673–773 K was investigated. The Pd-Ru membranes were characterized by XRD, SEM, XPS, and hydrogen permeation tests. The results show that when exposed to 1–10% NH3 at 723 K for 6 h, the hydrogen flux of Pd-Ru membranes sharply decreases by 15–33%, and the decline in hydrogen flux becomes more significant with increasing temperatures. After the removal of 1–10% NH3, 100% recovery of hydrogen flux is observed. XPS results show that nitrogenous species appear on the membrane surface after NH3 exposure, and the hydrogen flux inhibition may be related to the competitive adsorption of nitrogenous species. By comparing the hydrogen flux of Pd-Ru membranes exposed to 10% NH3 with 10% N2, it is indicated that the rapid decrease in hydrogen flux is due to the concentration polarization and competitive adsorption of nitrogenous species. The competitive adsorption effect is attenuated, while the concentration polarization effect becomes more pronounced with increasing temperature.

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Section: Resultsmentioning

confidence: 99%

Hydrogen Flux Inhibition of Pd-Ru Membranes under Exposure to NH3

Chen,

Li,

Yin

et al. 2024

Membranes

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Recent Advancements in Pd-Based Membranes for Hydrogen Separation

Cerone,

Zito,

Florio

et al. 2024

Energies

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The use of hydrogen is pivotal for the energy and industrial transition in order to mitigate the effects of climate change. As technologies like fuel cells, e-fuels, and the semiconductor industry increasingly demand pure hydrogen, the development of efficient separation methods is crucial. While traditional methods such as pressure-swing adsorption are common, palladium (Pd)-based membranes are a promising alternative due to their energetic efficiency. This review summarizes the recent advances in Pd-based membranes for hydrogen separation over the last six years. It provides a theoretical overview of hydrogen permeation through membranes and examine the characteristics of various Pd alloys adopted in membrane fabrication, discussing the advantages and disadvantages of binary and ternary alloys, for different membrane types, including self-supported and supported membranes, as well as the role of intermediate layers. Additionally, the membrane characteristics used in some recent works on self-supported and supported Pd membranes are analyzed, focusing on operational parameters like permeability, selectivity, and durability. Finally, this review emphasizes the significant progress made in enhancing membrane performance and discusses future directions for industrial applications.

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Inhibition Effect of CO on Hydrogen Permeation Through a Pd/Al₂O₃ Composite Membrane: A Comprehensive Study on Concentration Polarization and Competitive Adsorption Effect

Cited by 2 publications

References 33 publications

Hydrogen Flux Inhibition of Pd-Ru Membranes under Exposure to NH3

Hydrogen Flux Inhibition of Pd-Ru Membranes under Exposure to NH3

Recent Advancements in Pd-Based Membranes for Hydrogen Separation

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Inhibition Effect of CO on Hydrogen Permeation Through a Pd/Al2O3 Composite Membrane: A Comprehensive Study on Concentration Polarization and Competitive Adsorption Effect

Cited by 2 publications

References 33 publications

Hydrogen Flux Inhibition of Pd-Ru Membranes under Exposure to NH3

Hydrogen Flux Inhibition of Pd-Ru Membranes under Exposure to NH3

Recent Advancements in Pd-Based Membranes for Hydrogen Separation

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Product

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Inhibition Effect of CO on Hydrogen Permeation Through a Pd/Al₂O₃ Composite Membrane: A Comprehensive Study on Concentration Polarization and Competitive Adsorption Effect