Gas separation

Efficient nitrogen generation with SEPURAN® N2 membranes made by Evonik

Evonik's SEPURAN® N2 membrane has been especially developed for nitrogen generation combining low air consumption at all temperature levels with high nitrogen capacity.

Nitrogen calculator by SEPURAN®

Use Evonik's SEPURAN® N2 calculator to learn how much nitrogen you can make. Estimate the number and type of membranes you need by inputting the nitrogen flow, temperature, nitrogen purity and pressure. If you need more information, please call or email your local contact. 

Nitrogen purity up to 99.5%

Efficient air separation and nitrogen generation with SEPURAN® N2 is especially suitable when spaces are being blanketed to achieve an inert atmosphere. The reduction of atmospheric oxygen results in many different applications.

SEPURAN® N2 modules from Evonik have high selectivity and permeability. They combine low air consumption with high nitrogen capacity. The benefits for you: you need a small compressor, only a few modules, and operational costs are low.

SEPURAN® N2 is especially suitable in a wide variety of blanketing or inerting. As opposed to other membrane modules that are available on the market, the Evonik module combines excellent capacity with low air consumption. Alternatively, our SEPURAN® N2 Selective module can be used for low throughput volumes. The Selective version achieves high purity with extremely low air consumption. Energy consumption is especially low, while the capacity remains competitive.

How does nitrogen generation with Evonik's SEPURAN® N2 membranes work?

EFFICIENT AND ECONOMIC Nitrogen generation

  • Enormous cost savings compared to conventional gas cylinders
  • Low installation and running costs
  • Low maintenance


  • High capacity combined with low air consumption
  • Purity of up to 99.5% N2
  • Pressure up to 16 barg


  • Flexible in terms of adjusting purity
  • Easy to operate and install
  • No safety risks associated with handling gas cylinders