1. Division of Chemistry and Materials, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD, United Kingdom, Laboratoire de Matériaux à Porosité Contrôlée, UMR-7016 CNRS, ENSCMu, Université de Haute Alsace, 3, rue Alfred Werner, F-68093 Mulhouse, France, Wacker Chemie AG, Hanns-Seidel-Platz 4, 81737 Munich Germany, and European Synchrotron Radiation Facility, BP 220, F-38043 Grenoble, France