Testing Oxygen Separation Membranes Based upon Novel Materials - Conference attendances | Sciact - CRIS-system of Boreskov Institute of Catalysis

Testing Oxygen Separation Membranes Based upon Novel Materials Conference attendances

Language

Английский

Participant type

Устный

Conference

15th Conference & Exhibitionof the European Ceramic Society
09-13 Jul 2017 , Budapest

Authors

Sadykov Vladislav Aleksandrovich ^1,2 , Krasnov Aleksey ¹ , Fedorova Yuliya E. ¹ , Lukashevich Anton Igorevich ¹ , Skriabin Pavel Ivanovich ¹ , Eremeev Nikita Fedorovich ¹ , Valeev Konstantin Radikovich ¹ , Smorygo Oleg L'vovich ³

Affiliations

1	Boreskov Institute of Catalysis SB RAS
2	Novosibirsk National Research University
3	Powder Metallurgy Institute NAS Belarus

Design of materials for producing syngas from biofuels by selective oxidation with oxygen separated from air using catalytic membranes reactors is important problem of hydrogen energy field. Nanocomposites based on Pr nickelate-cobaltite are promising materials due to a high oxygen mobility and relatively good chemical stability in working conditions.1,2 This work aims at studying performance of membranes based on such nanocomposites. PrNi0.5Co0.5O3-δ (PNC), Ce0.9Y0.1O2-δ (YDC), Ce0.9Gd0.1O2-δ (GDC) and MnFe2O4 (MF) were synthesized by modified Pechini route. PNC – YDC and MF – GDC nanocomposites were prepared using ultrasonic dispersion in isopropanol. A few PNC – YDC functional layers with various porosity, dense MnFe2O4 – Ce0.9Gd0.1O2-δ buffer layer and porous Pt/Sm0.15Pr0.15Ce0.35Zr0.3O2-δ or LaNi0.9Pt0.1O3/Pr0.3Ce0.35Zr0.35O2-δ/Al2O3 catalytic layers were consecutively deposed on Ni/Al foam substrate. The membranes obtained were tested in CH4 selective oxidation into syngas/oxidry reforming using specially built setup. To measure the sample temperature, new visible spectra pyrometry technique by analysis of the working membrane images was developed. Pyrometry measurements revealed a nonuniform or Gaussian temperature profile on the surface of membranes. The oxygen permeability of membranes (the oxygen flux is up to 10 ml O2/cm2min at 950 °C under air/methane gradient) meets criteria of the practical application.3 Syngas yield and methane conversion increase with temperature and contact time. CH4 conversion is up to 50–60% with H2 content in the outlet feed being up to 25% at 900 °C. H2/CO concentration ratio is >1, which is good for the practical application. Stable performance of the membrane was demonstrated for at least 200 h time-on-stream.

Sadykov V.A. , Krasnov A. , Fedorova Y.E. , Lukashevich A.I. , Skriabin P.I. , Eremeev N.F. , Valeev K.R. , Smorygo O.L.
Testing Oxygen Separation Membranes Based upon Novel Materials
15th Conference & Exhibitionof the European Ceramic Society 09-13 Jul 2017