Zeolite molecular sieve effect manufacturers for you to explain

5a zeolite powdere is a porous gel. Various molecular sieves have a range of pore size distribution, there is a maximum limit and minimum limit. The maximum pore diameter than the molecular diameter of the gel, will all be exclusion outside the gel particles, this situation is called a full-exclusion. Even if the full exclusion of two molecules of different sizes, can not have separation. Minimum pore diameter than the diameter of the gel small molecules can enter all pores of the gel. If two molecules can enter all the gel pores, even if their size difference, there will not be a good separation effect. Therefore, it must have a certain degree of molecular sieve range of use.
In summary, there are three cases in gel chromatography, one molecule is very small, can enter all of the zeolite 13x pores; the second is a large molecule, can not enter any of the gel pores; three molecules of moderate size , can enter within the pores of the gel pore size corresponding parts. Large, medium and small three molecules more readily separated from each other, but each gel isolated molecules outside the range, without changing the type of the gel is difficult to separate the cases. For molecules of different sizes, but the same is within the scope of the various gel isolated molecules, in the distribution of the gel bed is different: the larger molecules into the aperture only that part of the larger gel pores, and the molecule may enter more gel particles, such molecules larger movement distance is short, smaller molecules to move a long distance in the gel bed. So the larger molecules to smaller molecules through the gel bed and the rear through the gel bed, thus separating the molecular sieve can make use of different substances. Further, the gel itself has a three-dimensional network structure, when the large molecules through the pores in such a network structure on the greater resistance, resistance is small by small molecules. In adopting the gel bed, according to molecular size "queue, gels behave different molecular sieve effect size of various ingredients.