title: Encapsulated liquid sorbents for carbon dioxide capture.
abstract: Drawbacks of current carbon dioxide capture methods include corrosivity, evaporative losses and fouling. Separating the capture solvent from infrastructure and effluent gases via microencapsulation provides possible solutions to these issues. Here we report carbon capture materials that may enable low-cost and energy-efficient capture of carbon dioxide from flue gas. Polymer microcapsules composed of liquid carbonate cores and highly permeable silicone shells are produced by microfluidic assembly. This motif couples the capacity and selectivity of liquid sorbents with high surface area to facilitate rapid and controlled carbon dioxide uptake and release over repeated cycles. While mass transport across the capsule shell is slightly lower relative to neat liquid sorbents, the surface area enhancement gained via encapsulation provides an order-of-magnitude increase in carbon dioxide absorption rates for a given sorbent mass. The microcapsules are stable under typical industrial operating conditions and may be used in supported packing and fluidized beds for large-scale carbon capture.
authors: 1] Lawrence Livermore National Laboratory, Livermore, California 94551, USA [2] Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors: John J
authors: JJ
authors: Vericella
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: Sarah E
authors: SE
authors: Baker
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: Joshuah K
authors: JK
authors: Stolaroff
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: Eric B
authors: EB
authors: Duoss
authors: 1] Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA [2] School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA [3] Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02138, USA.
authors: James O
authors: JO
authors: Hardin
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: James
authors: J
authors: Lewicki
authors: Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors: Elizabeth
authors: E
authors: Glogowski
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: William C
authors: WC
authors: Floyd
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: Carlos A
authors: CA
authors: Valdez
authors: 1] Lawrence Livermore National Laboratory, Livermore, California 94551, USA [2] Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
authors: William L
authors: WL
authors: Smith
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: Joe H
authors: JH
authors: Satcher
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: William L
authors: WL
authors: Bourcier
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: Christopher M
authors: CM
authors: Spadaccini
authors: 1] Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA [2] School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA [3] Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, Massachusetts 02138, USA.
authors: Jennifer A
authors: JA
authors: Lewis
authors: Lawrence Livermore National Laboratory, Livermore, California 94551, USA.
authors: Roger D
authors: RD
authors: Aines