Characterization of Pd 60 Cu 40 Composite Membrane Prepared by a Reverse Build-Up Method for Hydrogen Purification

Yasunari Shinoda, Masakazu Takeuchi, Hikaru Mizukami, Norikazu Dezawa, Yasuhiro Komo, Takuya Harada, Hiroki Takasu and Yukitaka Kato
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Yasunari Shinoda: Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ōokayama, Meguro-ku, Tokyo 152-8550, Japan
Masakazu Takeuchi: Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ōokayama, Meguro-ku, Tokyo 152-8550, Japan
Hikaru Mizukami: Department of Transdisciplinary Science and Engineering, School of Environment and Society, Tokyo Institute of Technology, 2-12-1, Ōokayama, Meguro-ku, Tokyo 152-8550, Japan
Norikazu Dezawa: Sanno Co., Ltd., 5-8-8, Tsunashima-Higashi, Kouhoku-ku, Yokohama 223-0052, Japan
Yasuhiro Komo: Sanno Co., Ltd., 5-8-8, Tsunashima-Higashi, Kouhoku-ku, Yokohama 223-0052, Japan
Takuya Harada: Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1, Ōokayama, Meguro-ku, Tokyo 152-8550, Japan
Hiroki Takasu: Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology (Tokyo Tech), 2-12-1, Ōokayama, Meguro-ku, Tokyo 152-8550, Japan
Yukitaka Kato: Laboratory for Zero-Carbon Energy, Institute of Innovative Research, Tokyo Institute of Technology (Tokyo Tech), 2-12-1, Ōokayama, Meguro-ku, Tokyo 152-8550, Japan

Energies, 2021, vol. 14, issue 24, 1-16

Abstract: 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.

Keywords: hydrogen energy; hydrogen purification; membrane separation; palladium; Pd-alloy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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