Hydrogen permeance and surface states of Pd‐Ag/ceramic composite membranes

Yang, Li; Zhang, Zhengxi; Yao, Bingjia; Gao, Xuhui; Sakai, Hitoshi; Takahashi, T.

doi:10.1002/aic.10892

Cited by 28 publications

(28 citation statements)

References 26 publications

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“…(6)-(8) parameters for the structure of the support (K 0 , B 0 ), the structure of the reformer (ε/ ) and the behaviour of the Pd/Ag-layer (Q 0 , Ea Pd , n) which have to be determined from experiments are present. In this work parameter results presented in Yang et al [18], obtained from experiments with Al 2 O 3 -supported Pd-Ag -membranes under certain conditions were applied. The results of this validation are given in the next chapter.…”

Section: H 2 -Membrane Flux Modelmentioning

confidence: 95%

“…For example, a lot of research has been done on improving permeability and selectivity of hydrogen separation membranes [13][14][15][16][17][18] or meliorating the reactor process control [5,12,19]. However, it is possible that upon integration of these aspects into the system the optimization criteria of the components might change.…”

Section: Superscripts and Subscriptsmentioning

confidence: 97%

“…In many studies [15,16,18,23] it is shown that at normal operation conditions with common state of the art membranes, the solution-diffusion mechanism which determines the flux in the Pd/Ag-layer is the limiting step and that the flux rate can be described by the Sievert's law…”

Section: H 2 -Membrane Flux Modelmentioning

confidence: 99%

See 2 more Smart Citations

Interactions between reaction kinetics in ATR-reactors and transport mechanisms in functional ceramic membranes: A simulation approach

Hüppmeier

Baune

Thöming

2008

Chemical Engineering Journal

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Section: H 2 -Membrane Flux Modelmentioning

confidence: 95%

Section: Superscripts and Subscriptsmentioning

confidence: 97%

See 1 more Smart Citation

Interactions between reaction kinetics in ATR-reactors and transport mechanisms in functional ceramic membranes: A simulation approach

Hüppmeier

Baune

Thöming

2008

Chemical Engineering Journal

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“…It is found that the agreement is reasonably good. The H 2 permeation model is compared with the experimental study on a H 2 permeation cell by Yang et al [27]. The comparison between predicted and measured H 2 flux through the membrane is shown in Fig.…”

Section: Model Validationmentioning

confidence: 99%

“…Fig. 4 e Comparison between predicted and measured [27] hydrogen permeation flux at different operating conditions in a permeation cell. …”

Section: Model Validationmentioning

confidence: 99%

Chemical and transport behaviors in a microfluidic reformer with catalytic-support membrane for efficient hydrogen production and purification

Xuan

Leung

et al. 2012

International Journal of Hydrogen Energy

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Membrane Autothermal reformingPorous media a b s t r a c t Microchannel reformer integrated with H 2 selective membrane offers an efficient, compact and portable way to produce hydrogen. The performance of a membrane-based microfluidic reformer is restricted by species diffusion limitation within the porous support of the membrane. Recent development in novel catalytic-supported membranes has the potential to enhance H 2 production by decimating the diffusion limitation.Loading a Pd-Ag layer on to a Ni-catalytic porous support, the membrane achieves both H 2 separation and production functions. In this study, a two-dimensional CFD model combined with chemical kinetics has been developed to simulate a microchannel autothermal reformer fed by methane. The species conversion and transport behaviors have been studied. The results show that the permeation process enhances the mass transport within the catalytic layer, and as a result, the reactions are intensified. Most notably, the effectiveness factor of the water-gas shift reaction as high as 6 is obtained.In addition, the effects of gaseous hourly space velocity (GHSV) on methane conversion and H 2 flux through the membrane are also discussed, and an optimal value of GHSV is suggested.

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High‐rate hydrogen separation using an MIEC oxygen permeable membrane reactor

2016

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In this study, we propose using mixed ionic‐electronic conducting (MIEC) oxygen permeable membrane to separate hydrogen via the water splitting reaction. To do that, steam was fed to one side of the membrane (side I) and a low‐purity hydrogen was fed to the other side (side II). Oxygen from water splitting on side I permeates through the membrane driven by an oxygen chemical potential gradient across the membrane to react with the low‐purity hydrogen on side II. After condensation and drying, high‐purity hydrogen is acquired from side I. Thus, the hydrogen separation process is realized based on the fact that the low‐purity hydrogen is consumed and high‐purity hydrogen is acquired. We achieved a high hydrogen separation rate (13.5 mL cm−2 min−1) at 950°C in a reactor equipped with a 0.5‐mm‐thick Ba0.98Ce0.05Fe0.95O3‐δ membrane. This research proofed that it is feasible to upgrade hydrogen purity using an MIEC oxygen permeable membrane. © 2016 American Institute of Chemical Engineers AIChE J, 63: 1278–1286, 2017

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Hydrogen permeance and surface states of Pd‐Ag/ceramic composite membranes

Cited by 28 publications

References 26 publications

Interactions between reaction kinetics in ATR-reactors and transport mechanisms in functional ceramic membranes: A simulation approach

Interactions between reaction kinetics in ATR-reactors and transport mechanisms in functional ceramic membranes: A simulation approach

Chemical and transport behaviors in a microfluidic reformer with catalytic-support membrane for efficient hydrogen production and purification

High‐rate hydrogen separation using an MIEC oxygen permeable membrane reactor

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