Location：SKLC conference room
Time：2014.7.28 (Monday) 16:00 p.m.
Lecturer：Prof. Dr. Jürgen Caro
Director of the Institute of Physical Chemistry and Electrochemistry
University of Hannover
Introduction：
1970-1977 University Leipzig, study of chemistry
1977 PhD (Dr. rer. nat.) on NMR on Molecules in Interaction with Surfaces
1977-1991 Central Institute of Physical Chemistry of the Academy of Sciences:
adsorption, catalysis, supercritical fluids, gas separation
1989 Dr. sc. nat-Thesis on the interplay of mass transport and catalysis in ZSM-5
1992 Dr. habil.-Thesis on novel application of molecular sieves as catalyst, membrane, optical material, sensors
1992-1993 Installation of the new research group Molecular Sieves as HighTech Materials at the Center of Heterogeneous Catalysis
1994-2001 Head of the Dept. Advanced Materials at the Institute of Applied Chemistry in Berlin: Ceramics, polymers, composites
2001- Professor for Physical Chemistry at the University of Hannover, Director of the institute
Special Activities
· Over 280 publications in referred journals (h-index of 45), 6 book chapter, 38 patents (3 of them used)
· Member of the Intern. Editorial Team/Advisory Board of Microporous and Mesoporous Materials, Advanced Materials, Catalysis Communications, Chinese Journal of Catalysis, Chemie Ingenieur Technik
· Contractor of the EU in the 6th and 7th Framework Programs: Network of Excellence Inside Pores, NASA-OTM, NEXT-GTL, CARENA, M4CO2
· Member of the Steering Committee “Fuel Cells” of the German State Niedersachsen from 2005 -2008, Member of the Steering Committee Fuel Cells and Batteries of the German State Niedersachsen since 2009
· Breck Award of the International Zeolite Association and Ostwald Medal in 2013
· Appointment as professor at the Chinese Academy of Sciences in Ningbo in 2013
Working fields
Porous Materials, Adsorption, Catalysis, Mass Separation, Membranes, Perovskites, Membrane Reactors, Fuel Cells, Photo-Solar Cells, group of 30 persons, among them 15 PhD students.
Abstract：
A thin MOF layer of a few mm is expected to separate molecules due to their shape and size in a way like zeolite molecular sieve membranes. Indeed, zeolite and MOF membranes are very similar in their molecular sieving performance.
At first sight, all tools which have been developed for the preparation of zeolite membranes, can be applied for the preparation of MOF membranes: Seeding, microwave heating, matching of the zeta potentials of support and membrane. However, comparing MOFs with zeolite membranes, there are PROs and CONs.
PROs:
By linker modification and substitution, almost any pores size can be engineered. By linker substitution, adsorptive interactions between the components of the mixture to be separated and the MOF membrane can be designed. By covalent links between support and MOF membranes, the mechanical adhesion of the membrane layer on the support can be increased.
CONs:
Some MOFs can be hydrolyzed easily by water, others are stable up to 400 °C in dry air and 200 °C in humid air. Because of framework flexibility, MOFs show not a sharp cut-off in their pore size. The stability in oxygen-containing atmosphere is only limited, therefore oxidative regeneration of spent membranes is impossible.
Newly developed ZIF-7, ZIF-8, ZIF-22, ZIF-90, and ZIF-95 membranes with molecular sieve separation behavior will be discussed.
Contacts：Group 504 Weiping Wang（9301）、Yanshuo Li（9137）