NEW PRODUCTS! Synkera has launched three new sensor products: Planar Interdigitated Electrodes, as well as Low-Power H2 and Low-Power VOC microsensors. Follow the links for further info.


Symmetric Membranes

Synkera offers symmetric monodisperse nanoporous ceramic membranes that are produced from nanoporous anodic aluminum oxide (AAO). This type of membrane features a symmetrical nanoporous architecture with uniform cylindrical pores penetrating the entire thickness of the membrane, and are characterized by a high degree of pore ordering and narrow pore size distribution (standard deviation is typically better than 8%, and in some cases is as low as 5%).

Synkera's symmetric membranes have superior mechanical and thermal stability far exceeding that of anodic alumina membranes from other suppliers. As-prepared AAO membranes are amorphous, but could be converted to nanocrystalline gamma and alpha-alumina phases which further enhances the membrane's chemical and thermal stability. Synkera offers several membrane heat-treatment options for operating temperatures up to 1000°C.

The range of currently available membrane specifications is summarized in the table below. We maintain an inventory of membranes with standard specifications. Most of our ceramic membranes could be ordered with a pore diameter in the range from 10 to 150 nm, and the thickness from 15 to 100 microns. For more details on this product, please see the AAO Technology Profile.

To order membranes, inquire on the product availability for non-standard specifications, and/or get feedback on your desired applications, please fill out our Info/Quote Request Form.

 
Standard
Custom
Pore diameter,
nm (SD 7-10%)
13
18
35
55
73
 80 100 150
10 - 150
Pore Density,
cm-2
1·1011
5·1010
1·1010
5·109
4·109
 2·109 2·109 1·109
2·1011 - 2·109
Porosity, %
10-20 (dependent on pore diameter)
up to 50
Thickness,
µm (± 2%)
50 and 100 *
15-100 ± 2%
Format / Size
round shape: 13, 25, 47 mm
square shape: 10 mm x 10 mm
custom shapes, up to 120 mm in size **
Operating Temperature up to 300-500°C depending on the environment Heat treatment option 1: up to 700°C (amorphous)
Heat treatment option 2: up to 900°C (γ-alumina)
Heat treatment option 3: up to 1000°C ** (γ/ α - alumina)
Product literature
Availability

1-2 weeks if not in-stock

2-6 weeks
* 13 nm pores not available in 100 micron thickness.
** size, shape, and heat treatment dependent on pore diameter and thickness; please email us for further information

Based on our expertise in materials science, nano- and microfabrication, and using this featured AAO membrane as a platform, Synkera is developing a portfolio of symmetric membrane products for the following applications:

  • gas separation membranes (composite and diffusion-based)
  • membrane-reactors
  • membrane standards

Partnerships are welcomed for joint application development in these areas. If you need additional information, are interested in membrane evaluation, or would like to discuss further, please email us at info@synkera.com