Inorganic membrane reactors: simulation and experimental studies
Preparation of modified PEEK membranes for PEM fuel cells
 

 




Angelo Basile

 

Objectives

Characterization of Pd-based membranes and their use in membrane reactors for pure hydrogen production.

Methodology

In order to analyze the perm-selectivity behaviors of the different membranes, pure and mixture gases permeation tests have been carried out on Pd-based composite membranes and on dense membranes with low content of palladium. Moreover, all the dense Pd-based membranes have been used in membrane reactors to carry out reactions such as ethanol, methanol and acetic acid steam reforming and methane dry reforming for producing pure hydrogen. Simulation studies have been realized on different reaction systems and the results have been compared with the experimental ones.

Results

All the Pd-based dense membranes showed infinite hydrogen perm-selectivity with respect to the other gases, while the composite ones showed hydrogen perm-selectivities lower than the theoretical Knudsen values.

Concerning the reactions carried out in the dense Pd-based membrane reactors, the influence of parameters such as reaction pressure, feed flow molar rate ratio, reaction temperature and sweep gas flow rate have been experimentally evaluated and, in some case, also by simulations.

In particular, the best results obtained in Pd-Ag dense tubular membrane reactors are the following:

ethanol steam reforming: ethanol conversion higher than 99%, hydrogen yield around 60% and more than 20% of CO-free hydrogen recovered;

acetic acid steam reforming: 100% acetic acid conversion and almost 40% of CO-free hydrogen recovered.

Perspectives

 

 

 

“Commessa e modulo” of reference

 

Collaborations

 

Funding sources

 

Main references

During 2007, the following paper have been published and accepted by international journals

  1. A. Basile, A. Iulianelli, “Alternative sulfonated polymers to Nafion for PEM fuel cell”, pp. 135-160, Chapter 3, on Fuel Cell Research Trends, L.O. Vasquez (Ed.), Nova Science Pub. Inc., 2007, ISBN: 1-60021-669-2.

  2. F. Gallucci, A. Basile, E. Drioli, “Methanol as an energy source and/or energy carrier in membrane processes”, Sep. & Purific. Rev., 36(2) (2007) 175-202.

  3. F. Gallucci, F. Chiaravalloti, S. Tosti, E. Drioli, A. Basile, “The effect of mixture gas on the hydrogen permeation through a palladium membrane: experimental studies and theoretical approach”, Int. J. Hydrogen Energy, 32 (2007) 1837-1845.

  4. F. Gallucci, A. Basile, S. Tosti, A. Iulianelli, E. Drioli, “Methanol and Ethanol steam reforming in Membrane Reactors: an experimental study”,  Int. J. Hydrogen En., 32 (2007) 1201-1210

  5. M. Amelio, P. Morrone, F. Gallucci, A. Basile, "Integrated Gasification Gas Combined Cycle Plant with Membrane Reactors: Technological and Economical Analysis", Energy Conv. & Manag., 48 (2007) 2680–2693

  6. A. Basile, F. Gallucci, A. Iulianelli “Research activities on hydrogen production using membrane reactors at the ITM-CNR”, Membranes (in Russian), 2(34) (2007) 3-21

  7. F. Gallucci, A. Basile,”Co-current and counter-current modes for Methanol Steam Reforming Membrane Reactor”, Accepted by Int. J. Hydrogen Energy, 2007.

  8. A. Basile, S. Tosti, F. Gallucci, “Synthesis, characterization and applications of palladium membranes”, in Inorganic membranes: synthesis, characterization and applications, Chapter 8, R. Malada & M. Menendez Eds., Elsevier, 2007, in press.

  9. G.F. Tereschenko, M.M. Ermilova, V.P. Mordovin, N.V. Orekhova, V.M.Gryaznov, A. Iulianelli, F. Gallucci, A. Basile, “New Ti-Ni Dense Membranes With Low Palladium Content”, Accepted by Int. J. Hydrogen Energy, 2007.

  10. F. Gallucci, M. De Falco, S. Tosti, L. Marrelli, A. Basile, The effect of the hydrogen flux pressure and temperature dependence factors on the membrane reactor performances, Accepted by Int. J. Hydrogen Energy, 2007.

  11. F. Gallucci, A. Basile, “A theoretical analysis of methanol synthesis from CO2 and H2 in an inorganic membrane reactor”, accepted by Int. J. Hydrogen En.

  12. F. Gallucci , S. Tosti, A. Basile, “Pd-Ag Tubular Membrane Reactors for Methane Dry Reforming: a reactive method for CO2 consumption and H2 production”, accepted by J. Membrane Sci., 2007.

  13. M.M. Ermilova, N.V. Orekhova, G.F. Tereshchenko,  A.A. Malygin,  A.A. Malkov, A. Basile, F. Gallucci, “Methanol oxidative dehydrogenation on nanostructured vanadium-containing composite membranes”, accepted by J. Membrane Sci., 2007.

  14. M. De Falco, P. Nardella, L. Marrelli, L. Di Paola, F. Gallucci, A. Basile, “The effect of heat-flux profile and of other geometric and operating variables in designingindustrial membrane steam reformers”, accepted  by Chem. Eng. Sci.

  15. S. Tosti, A. Basile, et al., “Low temperature ethanol steam reforming in a Pd-Ag membrane reformer. Part 2: Pt- and NiO-based  catalysts”, accepted by J. Membrane Sci.

  16. S. Tosti, A. Basile, et al., “Low temperature ethanol steam reforming in a Pd-Ag membrane reformer. Part 1: Ru-based catalyst”, accepted by J. Membrane Sci.