Center for Functional Nanomaterials Seminar
"Model System for Zeolites: Preparation of an ordered aluminosilicate film with the same active sites as zeolites."
Presented by J. Anibal Boscoboinik, Benin
Monday, March 18, 2013, 10 am
CFN, Building 735, Conf. Rm. B
Hosted by: Peter Sutter
Center for Functional Nanomaterials Seminar Model System for Zeolites: Preparation of an ordered aluminosilicate film with the same active sites as zeolites. J. Anibal Boscoboinik Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin. Monday, March 18, 2013 10:00 am Bldg. 735 â€" Conf. Rm. B Surface science has provided a deeper mechanistic understanding of many chemical processes occurring on metallic and oxide catalysts by using model systems. However, zeolites, one of the most important classes of materials in heterogeneous catalysis, have remained a challenge due to the lack of a proper system to model their properties. In this talk I will describe the preparation and characterization of an ordered aluminosilicate film that presents in its structure the same highly acidic sites found in zeolites. Bridging hydroxyls (Siâ€"OHâ€"Al) are catalytically active for a multitude of important reactions, including the catalytic cracking of crude oil, oligomerization of olefins and conversion of methanol to hydrocarbons. The properties of the bridging hydroxyls in the film were studied by using probe molecules and it was found that they behave in the same way as the most acidic zeolites. This makes this film an ideal model system for surface science studies of these materials and opens the doors to achieving a better understanding of one of the most important catalysts for energy related applications. (1) J.A. Boscoboinik, X. Yu, B. Yang, F.D. Fischer, R. Wlodarczyk, M. Sierka, S. Shaikhutdinov, J. Sauer, H.-J. Freund. Angew. Chem. Int. Ed. 2012, 51, 6005. Angew. Chem. 2012, 124, 6107. (2) J.A. Boscoboinik, X. Yu, B. Yang, S. Shaikhutdinov, H.-J. Freund. Micropor. Mesopor. Mater. 2013, 165, 158. Host: Peter Sutter