International Institute for Carbon-Neutral Energy Research (I2CNER)
Kyushu University

Metal-organic frameworks, (MOFs) for water sorption
for cycling heat transformation processes

Title
Speaker Prof. Christoph Janiak

I²CNER Webinar

Time&Date

Institute from the Inorganic Chemistry and Structural Chemistry
Heinrich-Heine-University Düsseldorf

5:00 PM(JST), Wednesday, November 10th, 2021

Abstract

Water-stable MOFs with suitable water uptake capacity are gaining attention for reversible cycling water
sorption in order to achieve low temperature heat transformation applications in adsorption heat pumps(AHPs), following our first report [1]. AHPs may be alternatives or supplements to conventional
compression systems operating with high input of electricity. By using low grade heat as the driving energy,
AHPs can significantly help to minimize electricity consumption. AHPs are based on the evaporation andconsecutive adsorption of coolant liquids, preferably water. The process is driven and controlled by themicroporosity and hydrophilicity. Yet, the specific temperature boundaries for evaporation, desorption,
heat rejection temperature from the adsorbent and the condenser for a desired cycling water sorption
application necessitate the tailoring of the adsorbent in terms of hydrophilicity/hydrophobicity for
optimized working conditions, which we have addressed here with a mixed-linker concept of MOF160/CAU-10-H [2]. Further, for applications of MOFs one of the biggest current issues is to find effective
methods to shape these microcrystalline, powdery materials into manageable forms such as monoliths,
pellets or surface coatings with sufficient mechanical and chemical stability, maximal bulk density etc.
under preservation of the crucial MOF porosity properties. We have approached this task successfully with
MOF@polymer in different binder composites under retention of MOF porosity and hydrophilicity [3].

[1] S. K. Henninger, H. A. Habib, C. Janiak, MOFs as adsorbents for low temperature heating and cooling applications;
J. Am. Chem. Soc. 2009, 131, 2776-2777. D. M. Steinert, S.-J. Ernst, S. K. Henninger, C. Janiak, Eur. J. Inorg. Chem. 2020, 4502-4515.
[2] C. Schlüsener, M. Xhinovci, S.-J. Ernst, A. Schmitz, N. Tannert, C. Janiak, Chem. Mater. 2019, 31, 4051-4062.
[3] S. Gökpinar, S.-J. Ernst, E. Hastürk, M. Möllers, I. El Aita, R. Wiedey, N. Tannert, S. Nießing, S. Abdpour, A. Schmitz, J. Quodbach, G.
Füldner, S. K. Henninger, C. Janiak, Ind. Eng. Chem. Res. 2019, 58, 21493−21503..

About the Speaker

Christoph Janiak studied Chemistry at the Technical University Berlin (TUB) and the University of Oklahoma. He obtained his
PhD at TUB in 1987, followed by postdoctoral stays at Cornell University and at BASF AG, Ludwigshafen in the polyolefin
division. From 1991-1995 he carried out his Habilitation at TUB. Following a non-tenured professor position at the Universityof Freiburg from 1996-1998 he got tenure there in 1998 as Associate Professor for Inorganic and Analytical chemistry. InNovember 2010 he moved to the University of Düsseldorf as Full Professor (Chair) for Nanoporous and Nanoscaled
Materials. His research interests include the properties and utilizations of metal-organic frameworks, covalent triazine
frameworks and metal nanoparticles. Christoph Janiak has co-authored over 600 research papers, book contributions andpatents with an h-index of 86 (Google Scholar). Christoph received a 'Fonds of the Chemical Industry' fellowship and award(1985-1987, 1988), the Heinz-Maier-Leibnitz award (1991), the ADUC award for Habilitands (1996), a Heisenberg fellowshipaward (1997), was a visiting professor at the University of Angers, France, and at Wuhan University of Technology, China.
Currently he is guest professor at the Hoffmann Institute of Advanced Materials at Shenzhen Polytechnic in China He is aFellow of the Royal Society of Chemistry (FRSC). He teaches the general chemistry, coordination chemistry, main-groupchemistry and analytical chemistry and has co-authored several text books on inorganic chemistry (in German).

Registration

https://zoom.us/webinar/register/WN_EGkH_z2PTA6E-ca8W5znSg

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