Abstract: Design of compact reactors based on selective oxygen permeable membranes separating O2 from air for fuels oxidation as well as hydrogen permeable membranes producing pure H2 from a mixture of fuel reforming products now attracts a lot of attention. This work reviews results of research aimed at design of inexpensive and robust nanocomposite materials for such membranes, optimizing their composition, synthesis route, real/nanostructure (characterized by modern structural/spectroscopic methods) and texture to ensure a high oxygen/hydrogen mobility, namely, O/H self-diffusion coefficients estimated by detailed mathematical analysis of unique data of temperature –programmed isotope heteroexchange of their lattice oxygen with C18O2, and hydrogen –with D2 in static/flow reactors. The highest O mobility was provided by PrNi0.5Co0.5O3–Ce0.9Y0.1O2 nanocomposites, while that of H – by nanocomposites comprised of (Ni, Cu) alloys + doped rare-earth niobates or tungstates-molybdates. Asymmetric supported membranes were constructed by supporting nanocomposite layers on Ni-Al alloy open foam substrates, being covered by catalytic layers on the fuel side. Catalytic membrane reactors demonstrated a high hydrogen/oxygen permeability along with a high activity and performance stability in real conditions of fuels reforming, thus being promising for the practical application. Support by the Russian Science Foundation Project 16-13- 00112 is gratefully acknowledged.

Cite: Bespalko Y.N. , Eremeev N.F. , Sadykov V.A.
Promising Nanocomposite Materials for Oxygen- and Proton-Conducting Membranes: Structural and Transport Properties, Performance of Catalytic Membrane Reactors
In compilation The American Ceramic Society 44th International Conference & Exposition on Advanced Ceramics and Composites. Abstract book. – The American Ceramic Society., 2020. – C.190.

Identifiers: No identifiers

Citing: Пока нет цитирований