Synthesis And Catalytic Propetries Of TS-1Zeolite With Self-Stacked Morphology

Recently, materials play an important role in our life. The diversification of thematerials meets the people’s need. Hierarchical porous sieve materials have greatadvantage because they have both the mesoporous structure, but also have a porousstructure. Larger surface area can improve the macromolecular reaction. Andhydrothermal stability becomes good. The andvantages also include strong acidity andoxidation ability. These structures make it more important in the application theseyears.It has been favored by scientists.The traditional synthetic methods of mesoporous materials are mostly choosingthe right templates. Templates that are usually used include materials such aspolymers and carbon nanoparticles. In the industrial application, molecular sievematerials need not only porous structure, morphology have a great influence on thereaction efficiency. So the control synthesis of the materials becomes a fresh focus inthe zeolite synthesis.There is a very important application value. In existing reports,successful examples of the multi-stage porous materials with a good crystal structureare few. In this paper, we improve the reaction system by adding new substance whichis a polymer called poly diallyldimethylammonium chloride,also named PDDA. In thehydrothermal synthesis,we finally get chain mesoporous TS-1zeolite materials.Traditional TS-1haven’t cationic polymer in the synthesis, the materialsmorphology is homogeneous. By adding polymer, the morphology of the synthesisedTS-1molecular sieve material is chain-like and the novel TS-1has a mesoporousstructure. The product has a certain morphology.In the reaction of the polyelectrolytesadded, the polyelectrolytes played an important role in controlling the type of material.In addition, we can also carried out the synthesis reaction under supercriticalconditions in a hydrothermal system. The TS-1materials synthesized via ahydrothermal method have a good catalytic performance in phenol hydroxylation. Adding the polymer in the synthesis of system is a common method. Peopleoften use the polymer as the synthesis of mesoporous materials template. This methodhas been applied in the other zeolite materials, such as mesoporous Betazeolite andMFI-type series. The method used in this article contribute to the materialmorphology control. We hope this method can be applied to prepare other types ofmaterials.