1. Innovation Department, Siemens Energy Global GmbH & Co. KG, Otto-Hahn-Ring 6, 81739 Munich, Germany
2. Catalysis Research Center and Chemistry Department, Technical University of Munich, Lichtenbergstr. 4, 85748 Garching b Munich, Germany
3. Technology Department, Siemens AG, Schuckertstr. 2, 91058 Erlangen, Germany