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Characterization of $Pd_{60}Cu_{40}$ Composite Membrane Prepared by a Reverse Build-Up Method for Hydrogen Purification
| Content Provider | MDPI |
|---|---|
| Author | Shinoda, Yasunari Takeuchi, Masakazu Mizukami, Hikaru Dezawa, Norikazu Komo, Yasuhiro Harada, Takuya Takasu, Hiroki Kato, Yukitaka |
| Copyright Year | 2021 |
| Description | A thin Pd-based $H_{2}$-permeable membrane is required to produce high-purity $H_{2}$ with high efficiency. In this study, a porous Ni-supported $Pd_{60}Cu_{40}$ composite $H_{2}$-permeable membrane was developed using a reverse build-up method to produce economical $H_{2}$ purification. The thickness of the $Pd_{60}Cu_{40}$ alloy layer produced by the improved membrane production process reached 1.0 μm; it was thinner than the layer obtained in a previous study (3.7 μm). The membrane was characterized by scanning electron microscope, inductively coupled plasma optical emission spectrometer, $H_{2}$ permeation test, and Auger microprobe analysis. The permeation tests were performed at 300–320 °C and 50–100 kPa with $H_{2}$ introduced from the primary side. The $H_{2}$ permeation flux was stable up to ~320 °C. The n-value was determined to be 1.0. The $H_{2}$ permeance of the membrane was 2.70 × $10^{−6}$ mol $m^{−2}$ $s^{−1}$ $Pa^{−1.0}$ at 320 °C, after 30 h, similar to those of other 2.2-µm-thick and 3.7-µm-thick $Pd_{60}Cu_{40}$ composite membranes, suggesting that the adsorption and dissociation reaction processes on the PdCu alloy surface were rate-limiting. The Pd cost of the membrane was estimated to be ~1/30 of the Pd cost of the pure $Pd_{60}Cu_{40}$ membrane. |
| Starting Page | 8262 |
| e-ISSN | 19961073 |
| DOI | 10.3390/en14248262 |
| Journal | Energies |
| Issue Number | 24 |
| Volume Number | 14 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-12-08 |
| Access Restriction | Open |
| Subject Keyword | Energies Polymer Science Hydrogen Energy Hydrogen Purification Membrane Separation Palladium Pd-alloy |
| Content Type | Text |
| Resource Type | Article |
