Honeycomb zeolite And molecular sieve

1. The chemical composition of natural zeolite is different. The main chemical composition of natural zeolite is sodium aluminosilicate, while molecular sieve is crystalline silicate or aluminosilicate, which is formed by connecting silicon oxygen tetrahedron or aluminum oxygen tetrahedron through oxygen bridge bond.

2. With different characteristics, zeolite has glassy luster and can re absorb water or other liquids. Molecular sieve has the advantages of high adsorption capacity, strong thermal stability and other advantages that other adsorbents do not have.

3. Molecular sieve is a powder crystal with metallic luster, hardness of 3~5, and relative density of 2~2.8. The natural zeolite has color, and the synthetic zeolite is white and insoluble in water. The thermal stability and acid resistance increase with the increase of SiO2/Al2O3 composition ratio.

The main difference between zeolite and molecular sieve is in their use. Zeolites are generally natural, with different pore sizes. As long as there are bubbles, explosion boiling can be prevented. Molecular sieves have more advanced functions, such as screening molecules, acting as catalysts, slow release catalysts, etc., so they have certain requirements on pore size and are often artificially synthesized.