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AssigneeValero Services, Inc.
InventorsJason Daniel Herrera, Michael J. Rubal
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The present disclosure provides methods and compositions for manufacturing solid-state zirconate membranes for selective carbon dioxide separation from high-temperature gas effluents. A first method involves applying a metal carbonate suspension to a porous zirconia substrate, followed by calcination. A second method involves saturating a porous zirconia substrate with metal hydroxides, converting the hydroxides to carbonates through carbon dioxide exposure, and subsequent calcination. Both methods produce mechanically robust membranes suitable for industrial and vehicle carbon dioxide separation applications. The methods utilize combinations of lithium and other metals, such as potassium, as the metal components, with specific molar ratios optimized for membrane performance. The resulting membranes exhibit improved mechanical stability while maintaining high carbon dioxide selectivity.
A method for producing a solid-state zirconate membrane for carbon dioxide separation from high-temperature gas effluents, the method comprising:
A method of for producing a solid-state zirconate membrane for carbon dioxide separation from high-temperature gas effluents, the method comprising:
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