What is MCM-41

MCM-41 is a new type of nano structure material, has featured six party in orderly arrangement, size uniform, pore diameter can be in 2-10 nm range continuous adjustment, high spicific surface etc. Characteristics. MCM-and from the traditional synthesis Molecule sieve synthesis is the biggest characteristic of the template, different, traditional zeolite synthesis of molecular sieve Molecule or small organic Molecule in a single molecular or metal ion for template agent and ZSM-5 as an example, the typical template, for four propyl amine ion, crystal is through the acid salt in the template, around the formation of condensation. And the synthesis of MCM-41 is different, it is in large Molecule molecular surfactants as a template,, template, alkyl chain generally more than 10 carbon atom, about the formation of it has already proposed two mechanism, and continue to improve and perfect. Compared with other zeolite materials, MCM-41 molecular sieve, pore size uniform, is a long term ordered mesoporous materials with high specific surface area, adsorption capacity, residue catalytic cracking, heavy oil hydrogenation, lubricating oil hydrogenation, alkylation, pore structure characteristics, the unity of the olefin polymerization, in acid catalysis and separation process, in petrochemical industry separation carbon dioxide and methane have considerable potential applications, sensing technology, heterogeneous catalysis, ion exchange and adsorption separation in the fields of the advanced inorganic materials have higher value.
MCM-41 skeleton aluminum species are relatively poor thermal stability, in the roasting process, aluminum frame by frame fall off as a species skeleton aluminum species. Pure silicon MCM-41 itself acid is very weak, as catalytic activity directly is low. Therefore, researchers often the modification, to increase its catalytic activity.


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