Carbon Molecular Sieve - CMS


CMS - Carbon Molecular Sieve

1. Brief Description

A Carbon Molecular Sieve (CMS) is the porous carbon skeletal framework remaining after the pyrolysis of a polymeric precursor. Carbon molecular sieve is a non-polar adsorbent that fuses the ideas behind both activated carbon and zeolites into one product, with adsorbing oxygen molecule to get nitrogen-enriched air at normal temperature (Nitrogen Generation). 

2. Main Applications

Nitrogen Generator (PSA-N2)
Nitrogen Generator (PSA-N2)

Carbon molecular sieve (CMS) specializes in separating oxygen from nitrogen, an important part in natural gas processing. This process is done with a PSA (Pressure Swing Adsorption) device in two phases.


The carbon molecular sieves is widely applied in petroleum chemical industry, the heat treatment of metal, the electronic manufacture and food preservation industries.

3. CMS Specifications (Technical Data Sheets)




CMS-220 CMS-240 CMS-260
Shape Pellets Pellets Pellets Pellets
Size (mm) 1.3   1.3 1.3 1.3

N2 Productivity*


200 220 240 260
N2 Purity** (%) 97-99.995 97-99.995 97-99.995 97-99.995
N2 Recovery*** (%)





Density (kg/m3)




Strength (N) 100 100 100 100
Adsorption Cycle (s) 2X60 2x60 2x60 2x60



Typical N2 productivity at the adsorption pressure of 0.8Mpa and N2 purity 99.5%. 

** Purity depends on adsorption pressure, productivity and recovery. 

*** Recovery difference by purity and productivity. 

4. Carbon Molecular Sieve Picture

Carbon Molecular Sieve by Shanghai MolSiv Adsorbent

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