CMS carbon molecular sieve is a kind of carbonaceous adsorbent, but also a kind of activated carbon with a uniform distribution of many micropores, it has a different surface structure and a very unusual pore structure from the general molecular sieve, it is believed that cms carbon molecular sieve is composed of very small carbon particle characteristic crystal structure, CMS carbon molecular sieve specific surface area and the size, shape, degree of aggregation and the formed pores Size is closely related. Because the basic microcrystals of CMS carbon molecular sieve are disordered and irregular, there are many pores of different sizes and shapes between the microcrystals, so a variety of cms carbon molecular sieveslit, cage and wedge pores are formed. It is because of this structure that CMS carbon molecular sieve has a very large pore volume and specific surface area.
According to the size of the hole, it is divided into large pores and medium pores between micro-pores and micro-large pores, also known as transition holes. The hole with a diameter greater than 50nto is a large hole, and the hole radius is larger than 2.0nm and smaller than 50nm. The hole has a diameter smaller than 2.0nto, and the hole is porous and has no hole. The hole is the concept of radius of a circle. In fact, the main composition of industrial carbon molecular sieve micropores and a small number of large pores, L pore size distribution is very small. The CMS carbon molecular sieve gap can be divided into the following three categories: (1) pores, large aperture O:,N: molecules can quickly access large pores. Effective hole (microhole), whose aperture is only to make oxygen. Nitrogen can come in and diffuse at different rates so that it can be played to separate nitrogen. The effect of oxygen. Ultramicropore size, oxygen. Nitrogen molecules cannot enter and have no separation effect, so they are considered ineffective. CMScarbon molecular sieve has a high hydrophobic animal, so its polar molecules have a good separation ability because it has a slit pore structure, so its planar molecular adsorption, so CMS carbon molecular sieve has a good effect on the separation of various substances