Ingo Pinnau, Ph.D.


​Professor of Chemical ​Engineering

Research Interests

​Professor Pinnau's research interests are in membrane processes for separation of gases and liquids – natural gas treatment, CO2 sequestration, hydrogen recovery, olefin/paraffin separation, and water purification. His research focuses on:

  • Synthesis of high-performance polymers

  • Development of high-performance membranes for gas and liquid separations

  • Hybrid organic/inorganic membranes

  • Nanostructured microporous polymer membranes

  • Thin-film technology

  • Membrane modifications (surface coatings/fouling resistance)

Selected Publications

  • Pressure-dependent pure- and mixed-gas permeation properties of Nafion
    M. Mukaddam, E. Litwiller, I. Pinnau
    J. Membr. Sci. 513, 140-145, (2016)
  • Triptycene dimethyl-bridgehead dianhydride-based intrinsically microporous hydroxyl-functionalized polyimide for na...
    F. Alghunaimi, B. Ghanem, N. Alaslai, M. Mukaddam, I. Pinnau
    J. Membr. Sci., 520, pp. 240-246, (2016)
  • Enhanced propylene/propane separation by thermal annealing of an intrinsically microporous hydroxyl-functionalized ...
    R.J. Swaidan, X. Ma, E. Litwiller, I. Pinnau
    J. Membr. Sci., 495, 235-241, (2015)
  • Physical aging, plasticization and their effects on gas permeation in “rigid” polymers of intrinsic microporosity
    R. Swaidan, B. Ghanem, E. Litwiller, I. Pinnau
    Macromolecules, 48 (18), 6553-6561, (2015)
  • Pure- and mixed-gas propylene/propane permeation properties of spiro- and triptycene-based microporous polyimides
    R.J. Swaidan, B. Ghanem, R. Swaidan, E. Litwiller, I. Pinnau
    J. Membr. Sci. 492, pp. 116-122, (2015)
  • High-performance polyamide thin-film-nanocomposite reverse osmosis membranes containing hydrophobic zeolitic imidaz...
    J.T. Duan, Y.C. Pan, F. Pacheco, E. Litwiller, Z.P. Lai, I. Pinnau
    J. Membr. Sci., 476, 303-310, (2015)
  • Quest for anionic MOF membranes: continuous sod-ZMOF membrane with CO2 adsorption-driven selectivity
    B.A. Al-Maythalony, O. Shekhah, R. Swaidan, Y. Belmabkhout, I. Pinnau, and M. Eddaoudi
    J. Am. Chem. Soc., 137 (5), pp. 1754-1757, (2015)
  • Synthesis and effect of physical aging on gas transport properties of a microporous polyimide derived from a novel ...
    X. Ma, B. Ghanem, O. Salinas, E. Litwiller, I. Pinnau
    ACS Macro Lett., 4 (2), pp. 231-235, (2015)
  • Effects of hydroxyl-functionaliztion and sub-Tg annealing on high pressure pure-and mixed-gas CO2/CH4 separation by...
    R. Swaidan, B. Ghanem, E. Litwiller, I. Pinnau
    J. Membr. Sci., 475, 571-581, (2015)
  • Preparation and water desalination properties of POSS-polyamide nanocomposite reverse osmosis membranes
    J. Duan, E. Litwiller, I. Pinnau
    J. Membr. Sci., 473, 157-164, (2015)


  • Ph.D. Chemical Engineering, The University of Texas at Austin, United States, 1991
  • B.S. Chemical Process Engineering, The University of Hamburg, Germany, 1985

Professional Profile

  • Advanced Membranes and Porous Materials Center (AMPMC)
  • Division of Physical Science and Engineering (PSE)

Research Interests Keywords

synthesis High-performance polymers High-performance membranes Gas separation Liquid Separation