The Recovery of Hydrogen from Binary Gas Mixtures Using a Membrane Module Based on a Palladium Foil Taking into Account the Deactivation of the Membrane

Babak, Valéry G.; Didenko, L. P.; Kvurt, Yu. P.; Sementsova, L. A.

doi:10.1134/s0040579518020021

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…Diffusion through the Pd-bulk: The atomic diffusion flux through the bulk Pd was modelled a simple Fickian diffusion model: (12) where Δz is the membrane thickness, E diff is the activation energy of H atom diffusion in metal bulk and X h and X l are the bulk H/Pd ratios adjacent to the upstream and downstream surfaces, respectively. A linear regression of the different values reported in the literature was done using this equation and based on that, we have selected to use factors based on those investigated by Holleck [24].…”

Section: Experimental and Modelingmentioning

confidence: 99%

“…These alternatives do not much affect the membrane characterization but it is necessary to correct evaluation of the membrane performance under real working conditions. Several literatures have been investigated these option in Pd membranes [10][11][12][13]. Also, mass transfer resistance in the Pd composite membrane has been studied by different authors [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Modeling of Hydrogen Permeation through Pd Membrane on Ceramic Supports Activated via Pd Nanoparticles–TiO2–Bohemite Suspension

Mardani

Jamshidi

Babaluo

2021

Theor Found Chem Eng

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Thin dense Pd composite membrane was prepared via electroless plating method. Pd nanoparticles embedded polyethylene glycol (PEG) was used in titanium dioxide-bohemite suspension during the activation step of electroless plating (ELP) method. This work indicates a model for hydrogen transport in the synthesized Pd composite membrane and compares with the experimental data at 0-100% Ar-H 2 binary gas and different pressure about 3 to 5 bar. This model a combined of established equations including the external mass transfer in the multicomponent gaseous phases on feed sides (the Stefan-Maxwell equations) and the H 2 transport in the Pd composite membrane (the Ward and Dao model in Pd layer and dusty gas model in the multilayered porous support). The contributions to the overall mass transfer resistance based on a combined experimental and modeling approach were identified. In this work, the highest resistance to mass transfer for the investigated conditions was diffusional resistance in the porous support. Our model calculations also indicated that by reducing the thickness of the Pd layer from 7 to 1 μm, the hydrogen gas flux is enhanced more than 30%. By reducing the thickness and tortuosity of the alumina support layer or by increasing its porosity, the H 2 flux is also improved.

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Section: Experimental and Modelingmentioning

confidence: 99%