Seed-assisted direct synthesis of aluminosilicate form of ITQ-58 zeolite

The aluminosilicate form of ITQ-58 has been directly synthesized in the synthesis gel SiO2-Al2O3-Na2O-H2O using Si/B-ITQ-58 zeolite as seed. Si/Al-ITQ-58 exhibits good crystallinity, high surface area, tetrahedral Al3+ species, and middle acid sites. The acidic form of Si/Al-ITQ-58 zeolite, is an excellent alternative heterogeneous catalyst with high yield and simple product separation, used for Biginelli reaction. Therefore, with the second case, we further confirm the new function of seed-assisted synthesis, i.e., direct aluminosilicate preparation.

Automated summary

The aluminosilicate form of ITQ-58 can be directly synthesized using Si/B-ITQ-58 zeolite as seed, exhibiting excellent properties for use as a heterogeneous catalyst in the Biginelli reaction. This method confirms the new function of seed-assisted synthesis in preparing aluminosilicates.