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Sustainable Oxygen Transport Membranes

Recycling and Synthesis Strategies

You will work on the development and characterization of novel oxygen transport membrane materials, which are applied in a microwave-powered CO2/H2-plasma to produce C1 building block chemical methanol in a sustainable way. This includes materials preparation by different methods such as Pechini-based and ultrasonic spray synthesis and co-precipitation methods. Afterwards, the obtained material is analyzed for its crystal and microstructure as well as exposed to different gas atmosphere in order to determine materials stability windows and simulate materials ageing. A very powerful tool to improve the sustainability of the synthesis process is the usage of secondary raw materials obtained from our recycling process. The study of such recycling approaches will be a part of the project as well.

The project is supervised by Dr. Marc Widenmeyer.

Lab skills:

  • Chemical lab experience, ideally on preparation of ceramic materials
  • X-ray Diffraction, ideally already practical experience
  • G. Chen, F. Buck, I. Kistner, M. Widenmeyer, T. Schiestel, A. Schulz, M. Walker, A. Weidenkaff, A novel plasma-assisted hollow fiber membrane concept for efficiently separating oxygen from CO in a CO2 plasma, Chem. Eng. J. 2020, 392, 123699. https://doi.org/10.1016/j.cej.2019.123699
  • G. Chen, W. Liu, M. Widenmeyer, P. Ying, M. Dou, W. Xie, C. Bubeck, L. Wang, M. Fyta, A. Feldhoff, A. Weidenkaff, High flux and CO2-resistance of La0.6Ca0.4Co1–xFexO3−δ oxygen-transporting membranes, J. Membr. Sci. 2019, 590, 117082. https://doi.org/10.1016/j.memsci.2019.05.007
  • M. Widenmeyer, K. Wiegers, G. Chen, S. Yoon, A. Feldhoff, A. Weidenkaff, Engineering of Oxygen Pathways for Better Oxygen Permeability in Cr-substituted Ba2In2O5 Membranes, J. Membr. Sci. 2020, 595, 117558. https://doi.org/10.1016/j.memsci.2019.117558
  • G. Chen, Z. Zhao, M. Widenmeyer, T. Frömling, T. Hellmann, R. Yan, F. Qu, G. Homm, J. P. Hofmann, A. Feldhoff, A. Weidenkaff, A comprehensive comparative study of CO2-resistance and oxygen permeability of 60 wt % Ce0.8M0.2O2–δ (M = La, Pr, Nd, Sm, Gd) – 40 wt % La0.5Sr0.5Fe0.8Cu0.2O3–δ dual-phase membranes, J. Membr. Sci. 2021, 639, 119783. https://doi.org/10.1016/j.memsci.2021.119783

Additional Information

Capactiy One IREP Student
Project Available for Spring 2024
Credits 18 ECTS
Available via Remote No