Mixed ionic-electronic conducting (MIEC) membranes for thermochemical reduction of CO2: A review

Chemical looping beyond combustion – a perspective

“…The appropriate combinations of oxygen carriers and supports can potentially increase the selectivity of synthesis gas and reduce catalyst deactivation. 199 92,131,200 between the metal oxide crystallites and the surface of oxygen carrier particle, thereby allowing effective oxygen removal and restoration during reactions (R3) and (R4). 201,202 Importantly, supports that promote the outwards diffusion of active metal should be avoided because such supports can potentially deactivate the redox catalysts via surface enrichment and agglomeration of the active metal oxide crystallites.…”

In situ catalyst exsolution on perovskite oxides for the production of CO and synthesis gas in ceramic membrane reactors

“…Conversion of CO 2 to CO has been recognized as a means to reduce greenhouse-gas emissions 21,22 and produce pure CO that can be used as a fuel, in the chemical industry, or as a reducing agent in metallurgy. 1 Syngas, on the other hand, serves as an intermediate mixture for the production of ammonia, methanol and liquid hydrocarbons via Fischer-Tropsch synthesis.…”

Synthesis and Characterization of 40 wt % Ce0.9Pr0.1O2–δ–60 wt % NdxSr1−xFe0.9Cu0.1O3−δ Dual-Phase Membranes for Efficient Oxygen Separation

“…The change from a fossil fuel-based to a renewable energy-based system requires the development of resource efficient materials with a long lifetime for energy conversion technologies. In this regard, mixed ionic-electronic conducting (MIEC) oxygen transport materials have drawn increasing interest due to their high potential for various energy conversion applications such as the oxygen transport membrane (OTM) for producing oxygen from air [1][2][3][4][5][6][7][8][9][10][11][12], electrolytes for batteries [13][14][15], cathode materials for solid oxide fuel cells [16][17][18], catalysts [19][20][21], and in membrane reactors [21][22][23]. With the current background of increases in CO 2 emissions and fossil resources depletion, CO 2 capture and utilization have been intensively researched to reduce CO 2 emissions, including thermolysis, membranes have received less attention in the literature for the oxygen transport process.…”

“…Using the OTMs membrane technology, the costs and energy consumption for oxygen production could be reduced at least by 35% compared with the conventional cryogenic distillation method [ 25 , 26 ]. Besides the application of the separation of oxygen from air, MIEC membranes used in membrane reactors are getting increasing attention to couple the reaction and separation processes to save energy and simplify the process [ 21 , 22 , 23 , 27 , 28 ]. Plasma technologies have attracted increasing attention as a timely flexible method for CO 2 conversion and utilization [ 29 , 30 , 31 , 32 , 33 ].…”