In situ studies of materials for high temperature CO 2 capture and storage Matthew T. Dunstan, † Serena A. Maugeri, ‡ Wen Liu, ¶ Matthew G. Tucker, §,‖,⊥ Oluwadamilola O. Taiwo, # Belen Gonzalez, @ Phoebe K. Allan, † Michael W. Gaultois, † Paul R. Shearing, # David A. Keen, § Anthony E. Phillips, △ Martin T. Dove, △ Stuart A. Scott, ∇ John S. Dennis, @ and Clare P. Grey ∗,† Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom, School of Physics and Astronomy, Queen Mary University of London, London E1 4NS, United Kingdom, Cambridge Centre for Advanced Research and Education in Singapore, Nanyang Technological University, 1 Create Way, Singapore 138602, ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, United Kingdom, Diamond Light Source, Chilton, Oxfordshire, OX11 0DE, United Kingdom, Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, USA, Department of Chemical Engineering, University College London, London WC1E 7JE, United Kingdom, Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge, CB2 3RA, United Kingdom, School of Physics and Astronomy, Queen Mary, University of London, London E1 4NS, United Kingdom, and Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, United Kingdom E-mail: cpg27@cam.ac.uk 1