Hydrogen permeation and recovery from H2–N2 gas mixtures by Pd membranes with high permeance

“…A dimensionless permeance is introduced to identify the polarization degree induced by the gas impurities such as N 2 , CO 2 , and CO . The dimensionless permeance ( K ′) is defined by

K^{'} = \frac{K_{gas mixture}}{K_{pure {normalH}_{2}}}

…”

Section: Resultsmentioning

confidence: 99%

“…[15] In addition to N 2 , CO 2 , and CO, the studies of H 2 permeation degradation due to the effects of CH 4 [14], H 2 S [12], and steam [16] have also received some attention. The studies of Pd-based membranes in binary gas mixtures are summarized in Table I [8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…When hydrogen is separated by a membrane, the permeance of the membrane will be abated by contaminants in the gas mixtures, even though the H 2 partial pressure difference across the membrane is fixed . For binary gas mixtures treated by Pd‐based membranes, much attention was paid to the influences of gas impurities N 2 , CO 2 , and CO on the permeance in that these gases are the main species in hydrogen‐rich gases.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Permeation characteristics of hydrogen through palladium membranes in binary and ternary gas mixtures

Chen

Lin

Hsun

et al. 2017

Int. J. Energy Res.

Self Cite

View full text Add to dashboard Cite

Summary The permeances of two palladium (Pd) membranes in pure H2, binary and ternary gas mixtures are investigated experimentally. With 10% of gas impurities (N2, CO2, or CO) in H2, the profiles of dimensionless permeance suggest that H2 permeation rate is lessened by approximately 50% to 90%, and the permeance reduced by the gas impurities is ranked as CO > CO2 > N2. By introducing a parameter of permeance resistance, which is the reciprocal of permeance, the permeance resistance in a ternary gas mixture can be predicted from the summation of individual permeance resistances in binary gas mixtures, revealing no synergistic effect exhibited from the interaction of contaminants. At least 75% and up to 100% of H2 in the gas mixtures can be recovered in the membrane system, and the maximum H2 recovery develops at the H2 partial pressure difference of 2 or 3 atm. In the Arrhenius‐type equation describing the relationship between the permeance and temperature, the activation energy is between approximately 2 and 18 kJ mole−1. In general, the permeances of the membranes in gas mixtures, especially in ternary gas mixtures, are more sensitive to temperature when compared with those in pure H2, stemming from lower activation energy exhibited. Copyright © 2017 John Wiley & Sons, Ltd.

show abstract

“…When the feed gas consisted of a mixture of H 2 and N 2 , N 2 will be partially retained on the membrane surface and form a barrier layer for H 2 permeation inducing a concentration polarization phenomenon [41,50,51]. Nitrogen concentration polarization on the membrane surface decreases the H 2 flux over the operation time [44,52]. The nitrogen molecule can dissociate on the membrane surface, but it can hardly undergo the dissolution because of the activation barrier.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen separation from mixed gas (H2, N2) using Pd/Al2O3 membrane under forced unsteady state operations

Budhi

Suganda

Irawan

et al. 2020

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research. • You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal.If the publication is distributed under the terms of Article 25fa of the Dutch Copyright Act, indicated by the "Taverne" license above, please follow below link for the End User Agreement:

show abstract

Hydrogen permeation and recovery from H2–N2 gas mixtures by Pd membranes with high permeance

Cited by 17 publications

References 43 publications

Effect of the presence of light hydrocarbon mixtures on hydrogen permeance through Pd–Ag alloyed membranes

Effect of the presence of light hydrocarbon mixtures on hydrogen permeance through Pd–Ag alloyed membranes

Permeation characteristics of hydrogen through palladium membranes in binary and ternary gas mixtures

Hydrogen separation from mixed gas (H2, N2) using Pd/Al2O3 membrane under forced unsteady state operations

Contact Info

Product

Resources

About