Blar i NTNU Open på forfatter "Gurauskis, Jonas"
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An experimental investigation of co-sintering of oxygen permeable asymmetric membranes with composition La0.2Sr0.8Fe0.8Ta0.2O3-*.
Bøen, Runar Holten (Master thesis, 2012)Asymmetric membranes of composition La0.2Sr0.8Fe0.8Ta0.2O3 were co-sintered from tape casted membranes and porous supports. The ceramic powders for dense and porous supports were obrained through coarsening and solid state ... -
Asymmetric supported dense lanthanum tungstate membranes
Gil, V; Gurauskis, Jonas; Einarsrud, Mari-Ann (Journal article; Peer reviewed, 2014)In this work, a colloidal processing route for dense asymmetric La28-xW4+xO54+3x/2 membranes for hydrogen gas separation applications was established. Dip coating process conditions were optimized to obtain ≈20 m thick ... -
Development of Asymmeteric Membranes for Oxygen Separation by Tape Casting and Dip Coating
Talic, Belma (Master thesis, 2013)Ceramic membranes made from mixed ionic and electronic conductive oxide materials have received much attention over the last decade due to their ability to separate oxygen from air at 100 % selectivity. The flux through ... -
Effect of B-site substitution on the stability of La0.2Sr0.8Fe0.8B0.2O3-delta, B = Al, Ga, Cr, Ti, Ta, Nb
Lohne, Ørjan Fossmark; Gurauskis, Jonas; Phung, Tan Nhut; Einarsrud, Mari-Ann; Grande, Tor; Bouwmeester, Henny J. M.; Wiik, Kjell (Journal article; Peer reviewed, 2012)Single phase, cubic perovskites of composition La0.2Sr0.8Fe0.8B0.2O3 − δ, B = Al, Ga, Cr, Ti, Ta and Nb, were prepared by spray pyrolysis from aqueous precursor solutions. The effect of B-site substitution on the stability ... -
La0.2Sr0.8Fe0.8Ta0.2O3 (-) (delta) based thin film membranes with surface modification for oxygen production
Gurauskis, Jonas; Lohne, Otto; Wiik, Kjell (Journal article; Peer reviewed, 2012)High temperature dense ceramic membranes made from mixed ionic/electronic conducting perovskite ceramics represent a high potential as a reliable source for oxygen and syngas production. In this work, La0.2Sr0.8Fe0.8Ta0.2O3 ... -
Optimization of Strength and Permeability of Tape casted Porous La0.2Sr0.8Fe0.8Ta0.2O3-δ
Wibe, Petter (Master thesis, 2012)Ceramics with mixed ionic and electronic conductivity are being investigated for oxygen separation from air, intended for the production of syngas. Asymmetric membranes, consisting of a dense membrane co-sintered with a ... -
Oxygen permeation in symmetric and asymmetric La0.2Sr0.8Fe0.8Ta0.2O3-d membranes
Gurauskis, Jonas; Lohne, Ørjan Fossmark; Lagergren, Dan Stræte; Tjønneland Wefring, Espen; Wiik, Kjell (Journal article; Peer reviewed, 2016)La0.2Sr0.8Fe0.8Ta0.2O3 − δ (LSFT) is a mixed ionic electronic conductor (MIEC) at elevated temperatures and as such a candidate material for applications both in syn-gas synthesis and as electrodes in solid oxide fuel cells ... -
Permeation and Mechanical Properties of Porous Supports Intended for Asymmetric Membranes Based on La(0.2)Sr(0.8)Fe(0.8)Al(0.2)O(3-δ)
Lagergren, Dan Stræte (Master thesis, 2012)Production of asymmetric ceramic membranes intended for oxygen gas separation was done by producing porous supports made from coarse La(0.2)Sr(0.8)Fe(0.8)Al(0.2)O(3-d) powder produced by the solid state reaction method. ... -
Permeation and Stability Properties of Asymmetric and Disk Shaped Oxygen Permeable Membranes Intended for Syn-Gas Production
Wagner, Nils (Master thesis, 2012)In this study, the oxygen permeation and stability properties of disk shaped and asymmetric membranes, both of the composition La0.2Sr0.8Fe0.8Al0.2O3-δ were investigated. Strontium doped Lanthanum ferrite is an oxygen ... -
Pilot scale fabrication of lanthanum tungstate supports for H<inf>2</inf> separation membranes
Gurauskis, Jonas; Gil, Vanesa; Lin, Bin; Einarsrud, Mari-Ann (Peer reviewed; Journal article, 2022)This paper reports the fabrication of asymmetric tubular geometry lanthanum tungstate-based membranes for high temperature H2 separation applications. As starting materials, powders with the compositions La28-yW4+yO54+δ ... -
Processing of thin film ceramic membranes for oxygen separation
Gurauskis, Jonas; Lohne, Ørjan Fossmark; Lein, Hilde Lea; Wiik, Kjell (Journal article; Peer reviewed, 2012)Processing of dense and thin ceramic membrane layers for high temperature selective oxygen separation is addressed in this study. Mixed oxygen-ionic and electronic conducting perovskite oxide system based on La0.2Sr0.8Fe ... -
Synthesis and oxygen transport properties of La2 − ySryNi1 − xMoxO4 + δ
Gómez, S. Y.; Gurauskis, Jonas; Øygarden, Vegar; Hotza, D.; Grande, Tor; Wiik, Kjell (Journal article; Peer reviewed, 2016)La2NiO4 + δ-based materials (LN) with tetragonal K2NiF4-type structure exhibit high electronic and oxygen ion conductivity. In this work synthesis, phase relations and oxygen transport properties are reported for the system ...