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SUMMARY:Smart membranes: Perovskite\, zeolite\, MOF\, COF\, MXene material
 s in gas separation and membrane reactors
DTSTART:20180920T160000
DTEND:20180920T170000
DTSTAMP:20260916T044052Z
UID:6900fd2d143fe7425d3f53c3e1fdcd21188de1b777cc64801c07ddf7
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Dr. Jürgen Caro\nInstitute of Physical Chemistry and El
 ectrochemistry\,\nGottfried Wilhelm Leibniz Universität Hannover\, German
 y\nChE-605 - Highlights in Energy Research seminar series\nCaro starts wit
 h some novel preparation techniques for supported MOF membranes Supported 
 thin MOF layers are usually prepared by solvothermal crystallization. Also
  counter diffusion and interfacial growth\, chemical vapor deposition\, el
 ectrophoretic nuclei assembly\, pseudomorphic replication or phase transfo
 rmation\, and layer-by-layer (l-b-l) techniques by dipping/spraying can be
  used. Recent developments in gas separation membranes such as switching o
 f gas transport by external stimuli like electric fields [1] or light of a
  certain wavelength [2] are highlighted.\nA new field of membrane research
  is the deposition of 2D nano-sheets to stacked membranes. Recent examples
  are synthesis of MXene (Ti3AlC2 )[3\,4] and g-C3N4  [5] membranes with s
 ynthesis of the nano-sheets from the 3D materials (top down). New COF memb
 ranes allow high water flux and good dye/drug retention [6].\nMembranes ca
 n be used in membrane reactors for process intensification. One example is
  the formation of dimethylether (DME) from methanol (MeOH) according to 2 
 MeOH D DME + H2O. The product water was removed through a hydrophilic LTA 
 membrane [7]. A second example is to support the aromatization of methane 
 by using oxygen or proton conducting membranes. Proton conducting ceramics
  can shift the equilibrium 6 CH4 D C6H6 + 9 H2 by extracting hydrogen [8].
  Oxygen transporting membranes can influence the reaction by the in situ c
 ombustion of hydrogen 6 CH4 + 4\,5 O2 ® C6H6 + 9 H2O [9].\n[1] A. Knebel\
 , B. Geppert\, K. Volgmann\, D.I. Kolokov\, A.G. Stepanov\, J. Twiefel\, P
 . Heitjans\, D. Volkmer\, J. Caro\, Defibrillation of soft porous metal-or
 ganic frameworks with electric fields\, Science\, 358 (2017) 347.\n[2] Z. 
 Wang\, A. Knebel\, S. Grosejan\, D. Wagner\, S. Bräse\, C. Wöll\, J. Car
 o\, L. Heinke\, Tunable molecular separation by nanoporous membranes\, Nat
 ure Commun. 7:13872\, 2016.\n[3] L. Ding\, Y. Wei\, L. Li\, T. Zhang\, H.H
 . Wang\, J. Xue\, L.-X. Ding\, S. Wang\,  J. Caro\, Y. Gogotsi\, MXene mo
 lecular sieving membranes  for highly efficient gas separation\, Nature C
 ommunications 9 (2018)\, 155.\n[4] L. Ding\, Y.Y. Wei\, Y. Wang\, H.B. Che
 n\, J. Caro\, H.H. Wang\, A two-dimensional Lamellar Membrane: MXene Nanos
 heet Stacks\, Angew. Chem. Int. Ed. 56 (2017) 1825.\n[6] Y. Wang\, L. Li
 …H. Chen\, L. Ding\, J. Caro\, H.H. Wang\, Water transport with ultralow
  friction through partially exfoliated g-C3N4 nanosheet membranes with sel
 f-supporting spacers\, Angew. Chem. Int. Ed. 56 (2017) 8974.\n[6] H. Fan\,
  J. Gu\, H. Meng\, A. Knebel\, J. Caro\, High-Flux Membranes Based on the 
 Covalent Organic Framework COF-LZU1 for Selective Dye Separation by Nanofi
 ltration\, Angew. Chem. Int. Ed.Int. Ed. 57 (2018) 4083.\n[7] J. Xue...A. 
 Feldhoff\, H.H. Wang\, J. Caro\, Gas to liquids: Natural gas conversion to
  aromatic fuels and chemicals in a hydrogen-permeable ceramic hollow fiber
  membrane reactor\, ACS Catalysis\, 6 (2016) 2448-2451.\n[8] Z. Cao\, H. J
 iang\, H. Luo\, S. Baumann\, W.A. Meulenberg\, J. Assmann\, L. Mleczko\, Y
 . Liu\, J. Caro\, Natural gas to fuels and chemicals: improved methane aro
 matization in the oxygen-permeable membrane reactor\, Angew. Chem. Int. Ed
 . 52 (2013) 13794-13797.\n[9] C. Zhou\, N. Wang\, Y. Qian\, X. Liu\, J. Ca
 ro\, A. Huang\,     Efficient synthesis of dimethyl ether from methanol
  in a bifunctional zeolite membrane reactor\, Angew. Chem. Int. Ed. 55 (20
 16) 12678-12682.\n\nThe seminar can also be followed remotely by joining t
 he online Cisco WebEx meeting (connection possible 15 minutes before the t
 alk).\nSee here the documentation how to install the Cisco WebEx add-on on
  your computer.\nIn case of problem\, you can contact our IT support (3767
 9 - it.vs@epfl.ch ) \n 
LOCATION:I17 4 K2 https://plan.epfl.ch/?room==I17%204%20K2
STATUS:CONFIRMED
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