Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 210, Issue -, Pages 320-326Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2018.08.014
Keywords
Mixed protonic and electronic conductor; Hydrogen permeation membrane; Hydrogen separation; Metalloid cation doping; Phosphorus doping
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Funding
- National Natural Science Foundation of China [21706076, 21536005]
- Natural Science Foundation of Guangdong [2017A030310431]
- Guangzhou Technology Project [201804010210]
- China Postdoctoral Science Foundation [2018T110870]
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Metalloid element doping is a novel strategy to improve the properties of hydrogen permeable membranes. Herein, phosphorus doping was applied to enhance the hydrogen separation performance of lanthanum tungstate membrane for the first time. The effects of P content on the hydrogen permeability of La5.5W0.6Mo0.4-xPxO11.25-delta (x = 0, 0.05, 0.1, 0.2) membranes were firstly investigated under different temperatures. Among series of doped-membranes, La5.5W0.6Mo0.35P0.05O11.25-delta exhibited increased hydrogen permeability and improved stability than the parent material due to higher protonic conductivity. The results showed that metalloid phosphorus element doping possesses a beneficial effect on the hydrogen separation performance, which could accelerate the development of the hydrogen permeable membranes and promote their practical applications.
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