Thin porous metal sheets or structures

  • Can be made from nickel alloys or steel
  • Extremely flexible
  • Controllable thickness from 20-200 µm
  • Tunable pore size ranging from a µm to nm

Thin-sheet molecule-sieve membranes

Dense, continuous membrane grown on thin porous metal sheet support with the following Zeolite frameworks:

  • NaA
  • Faujasite-type
  • MFI-type
  • Metal organic framework
  • Polymer & inorganic composite
  • Mircro-porous carbon


Plate-frame membranes

Dense, continuous membrane grown on thin porous metal sheet support with the following Zeolite frameworks:

  • Can be made from nickel alloys or steel
  • Extremely flexible
  • Controllable thickness from 20-200 µm
  • Tunable pore size ranging from a µm to nm


Zeolite membrane for H2O removal

Dense, continuous membrane grown on thin porous metal sheet support with the following Zeolite frameworks:

  • Can be made from nickel alloys or steel
  • Extremely flexible
  • Controllable thickness from 20-200 µm
  • Tunable pore size ranging from a µm to nm

Literature

Advanced Thin Zeolite/Metal Flat Sheet Membrane for Energy Efficient Air Dehumidification and Conditioning

  • Air conditioning consumes a large amount of electricity globally in warm humid climates.
  • Efficient membrane dehumidification requires both high permeance and selectivity.
  • Thin zeolite/metal sheet membranes are demonstrated for this application first time.
  • H2O permeance of 6.8×10−6 mol/(m2 Pa s) and H2O/air separation factor of 300 are obtained.

Development of Thin Porous Metal Sheet as Micro-filtration Membrane and Inorganic Membrane Support

  • Thin (25–200 µm) porous Ni alloy sheets of sub-micrometer pores are prepared with uniform pore structures.
  • Inexpensive metal oxide powder is used as the metal precursor.
  • The preparation process is versatile for tailoring of sheet chemical and physical properties.
  • The 50 µm-thick sheet shows gas permeance of 1.0 × 10−4 mol/(m2 Pa s) and water permeability of 10,000 L/m2/h/bar.

Preparation of Robust, Thin Zeolite Membrane Sheet for Molecular Separation

  • Feasibility study on the preparation of zeolite membrane films on a thin, porous support sheet (50 µm thick)
  • Zeolite sodium A (NaA) and silicalite zeolite frameworks are chosen to represent syntheses of zeolite membranes on the support
  • Found that a dense, continuous intergrown zeolite crystal layer at a thickness less than 3 µm can be directly deposited with excellent adhesion
  • Molecular-sieving functions of the prepared membranes are characterized with ethanol/water separation, CO2 separation, and air dehumidification
  • Results show great potential for a range of energy conversion and environmental applications.

Thin Porous Metal Sheet-Supported NA Zeolite Membrane for Water/Ethanol Separation

  • An ultra thin (<\2 µm) NaA zeolite membrane is directly deposited on a thin (∼50 µm) porous metal support sheet with good adhesion and high quality for the first time.
  • A water/ethanol selectivity greater than 10,000 and water permeation flux above 4 kg/(m2 h) were demonstrated with water/ethanol feed mixtures over a range of water contents and separation temperatures.
  • A H2O-facilitated ethanol transport model is proposed to explain the decrease of the H2O/ethanol selectivity with increasing water content in the feed mixture.