Molecular sieve manufacturer explains the possibility of developing multi-purpose catalysts in fine chemicals

As a crystalline microporous material, molecular sieves are widely used in petroleum refining, as well as in the production of chemicals and petrochemical products. As solid acid-base catalytic materials, the advantages of these materials have been widely discussed in the literature. Especially due to their excellent catalytic performance, substitution for harmful acids, reduction of salt and other waste emissions, and prevention of equipment corrosion, these molecular sieves are widely used as acidic catalytic materials in the refining and petrochemical industries. Below, the editor of molecular sieve manufacturer will explain the possibility of developing multi-purpose catalysts in fine chemicals.
In the past few years, significant progress has been made in the synthesis of chemical intermediates and fine chemicals using acidic molecular sieve catalysts. After adjusting acidity (or alkali) and regeneration, molecular sieve materials with various topological structures and pore sizes have been applied in the process of heterogeneous catalysis to synthesize fine chemicals. These studies indicate that molecular sieves are particularly useful as catalysts in the synthesis of fine chemicals.
This fact indicates that a single, independent, and adjustable acidic center can provide unique possibilities for the reaction. In addition, in some cases, preparing molecular sieves with controllable polarity can avoid the use of solvents and promote product desorption. Molecular sieve pores with well-defined dimensions and topological structures have both advantages and disadvantages. In fact, well-defined pores can stabilize certain transition states, thereby improving reaction activity and forming shape selective effects; Meanwhile, the large volume products formed by the simultaneous reaction diffuse out of the pores at a slower rate, especially at low reaction temperatures, leading to micropore blockage and rapid deactivation of the catalyst. This requires frequent regeneration, and sometimes even requires the catalyst to be discharged from a fixed bed and continuous reactor for regeneration before use. In this case, using nanocrystals and delaminating molecular sieves is meaningful. Molecular sieves with extremely large pore sizes can also be used to facilitate the diffusion of large volumes of reactants and products.
As for alkaline molecular sieve catalysts, the problem is that the competing catalysts are NaOH and KOH, which are cheap and the residues (salts) are easily removed. The opportunity for molecular sieves will only increase due to special selection effects.
Finally, we believe that there is still the possibility of developing versatile catalysts through the design of molecular sieve structures, which will make cascade reactions and one pot synthesis possible. Hunan Providence New Materials Co., Ltd is a professional molecular sieve manufacturer which can provide USY zeolite, NaY zeolite, REY zeolite, ZSM-5 zeolite, welcome to consult.