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Meeting Materials Science & Technology 2019
Symposium Synthesis, Characterization, Modeling and Applications of Functional Porous Materials
Presentation Title A ScSZ-MC Dual-Phase Membrane for Pre-Combustion CO2 Capture
Author(s) Shichen Sun, Kevin Huang
On-Site Speaker (Planned) Shichen Sun
Abstract Scope Here in this presentation, we show a high-temperature ceramic-carbonate dual-phase (CCDP) membrane with high CO2 permeability and selectivity, high mechanical strength, and enhanced H2S tolerance; the latter is of vital importance to pre-combustion CO2 capture since the syngas stream often contains certain amount of H2S. The CCDP membrane is composed of a porous scandium stabilized zirconia (ScSZ) ceramic phase filled with a Li-Na molten carbonate (MC) phase. The ScSZ phase has a high oxide-ion (O2-) conductivity, excellent compatibility with MC, and tolerance against H2S, while MC phase is uniformly distributed within micro-pores in ScSZ phase and contributed to CO2 flux via its carbonate-ion (CO32-) conduction. The CO2 permeation of ScSZ-MC membrane was studied in the temperature range of 600-900oC as a function of CO2 concentration in the feed gas. In addition, long-term flux stability was also investigated under a simulated syngas containing trace H2S to examine membrane’s H2S tolerance.
Proceedings Inclusion? Definite: At-meeting proceedings


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Stochastic Mechanical Modeling of Nanoporous Materials Accounting for Connectivity and Mixed Loading States
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