Carbon Molecular Sieves For Gas Separation
                     Molecular Sieve 
Desiccants
Manufacturer since 1996
Carbon Molecular Sieves For Gas Separation
Carbon molecular sieves have helped 
immensely in developing, and 
commercializing the pressure swing 
adsorption process that is widely used for 
the separation of nitrogen and other gases 
from air.  They have a smaller pore size, 
usually between 3 and 5 Å, and can 
effectively help with the separation of gases. 
These materials, which have molecular 
sieving properties, are used to selectively 
separate the hydrogenate mixtures of alkene 
hydrocarbons and many other industrial 
applications.
Carbon molecular sieves are a type of porous carbon adsorbent material with a well-defined pore structure, and are used for a 
variety of industrial applications, including but not limited to gas separation, catalyzing, purifying water, and controlled 
oxidation treatments.
CMS works by selectively adsorbing the different gases from the air mixture onto their porous surface. The adsorption capacity 
of a CMS for a particular gas depends on the size and shape of the gas molecule, as well as the pore structure of the carbon 
molecular sieve used in the application. For example, if you choose carbon molecular sieves for gas separation with small 
pores, it can help adsorb and separate smaller gas molecules like hydrogen and methane.
Uses of carbon molecular sieves in a variety of gas separation applications
Carbon molecular sieves, are used in many applications for the separation of impurities and contaminants that may be 
present in mixtures and compounds. In various processes, it is very important to use pure raw materials and products, and 
thus, it is imperative to use highly porous and efficient adsorbent materials such as molecular sieves, that use carbon or 
activated carbon, to obtain high levels of purity.
CMS can remove impurities from natural gas such as sulphur compounds, water, heavy hydrocarbons, and also, separate 
other gas impurities or unnecessary ingredients such as methane from other gases present in natural gas such as carbon 
dioxide and nitrogen. This makes it possible to produce high-quality CH4 that can be used as a fuel or as a raw material for 
other chemical operations.
Carbon molecular sieves play an important role in the production of high purity oxygen and nitrogen in air separation 
units. Carbon molecular sieves have the ability to selectively adsorb nitrogen to separate oxygen and nitrogen from 
atmospheric air, using the low-cost Pressure Swing Adsorption technique. After the separation of these gases is obtained, 
O2 can be used in many important and high-demand industrial processes such as steelmaking or water treatment, while 
N2 is used for a wide range of applications, including food packaging and production or manufacturing of electronics.
Molecular sieves made of carbon can help separate hydrogen from other gases in syngas, which is essentially a mix of 
hydrogen, carbon dioxide, and nitrogen that's made from coal or gas, and used in various industrial applications and 
processes. These separated hydrogen gas compounds can then be utilized as a source of clean fuel or as a raw material 
for chemical operations. In refining and petrochemical facilities, Molecular sieves desiccants help to recover hydrogen 
from a variety of gas streams, thereby increasing the productivity of processes and decreasing the consumption of this 
precious gas.
Molecular sieves can be used to remove impurities from biogas, such as CO2 and water vapor, which allows for the 
production of high-purity biomethane, which can be used as a renewable fuel source, thus making it an ideal choice for 
biogas purification processes and techniques. 
Why use carbon molecular sieves for gas separation?
Since CMS is really good at adsorbing certain kinds of gas molecules, it can differentiate between various gases depending on 
their individual size, shape, and polarity of each gas molecule in the mixture. This is really important when you need to 
separate one gas from another in a mixture. For example, molecular sieves of carbon can be designed to selectively adsorb 
CO2 while allowing other gases to pass through, making them valuable in carbon capture and storage, natural gas processing, 
air separation, and hydrogen production.
We know that carbon molecular sieves exhibit a high adsorption capacity, they are highly capable of adsorbing and separating 
various gases by adsorbing them into their porous structure, and this is beneficial in applications where the goal is not only 
separation but also the storage or concentration of specific gases.
The main reason why hydrogen separation techniques work using a PSA system and are efficient is because of the high 
absorbency levels of carbon molecular sieves. This is because the impurity gases are much more selective than hydrogen. The 
best sorbents to use in practice are a mix of carbon and zeolite molecular sieves.
The molecular sieve material is highly versatile and customizable, and thus can be tailored to suit specific gas separation 
requirements according to the industrial application by adjusting their pore size and surface properties to achieve the best 
results and end products. This versatility and flexibility allows them to be applied in a wide range of industries, like natural gas 
processing petrochemicals, hydrogen production, environmental control, and the food industry.
Carbon molecular sieves for gas separation can be easily and simply regenerated by desorbing the adsorbed gases, making 
them reusable, making them a sustainable and environment-friendly molecular sieve material that can be used across 
industries and applications. 
Thank you 
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