Facile synthesis of hydrothermally stable mesoporous ZSM-5 zeolite from Al- SBA-16 via steam assisted crystallization

Hydrothermal treatment: an effective method to improve the catalytic activity of the Pt/ZSM-5 catalyst for complete benzene oxidation

“…The peaks at 800 cm −1 to 1220 cm −1 and 3450 cm −1 are assigned to Si–O–Si or Si–O–Al stretching and hydroxyl group stretching, respectively. 21 All samples exhibited typical characteristic bands of ZSM-5, and this further proved that hydrothermal treatment did not destroy the crystal structure of the catalysts. There was no difference observed in the hydroxyl groups among the three catalysts based on the FT-IR spectra.…”

State of the Art and Perspectives of Hierarchical Zeolites: Practical Overview of Synthesis Methods and Use in Catalysis

“…This ZSM‐5 catalyst showed promising activity in the benzylation of mesitylene and performed better than the commercial ZSM‐5. [ 175 ] Other hierarchical ZSM‐5 zeolites were produced by a dry gel conversion‐SAC method using different Si/TPA + ratios. High ratios led to hierarchical ZSM‐5 with intracrystalline mesopores, whereas low ratios gave zeolite assemblies with intercrystalline mesoporosity.…”

Can We Form Mesoporous Zeolites by Steam Assisted Crystallization of MCM-41?

“…Li et al reported the synthesis of a hierarchical meso-/microporous aluminosilicate via SAC using soft meso-and micropore templates based on a micro emulsion for the creation of macroporosity, resulting in the formation of a network of interconnected pores on three length scales [22,23]. Furthermore, SAC, by the impregnation of tetrapropylammonium hydroxide (TPAOH) on Al-SBA-16, was reported to allow the synthesis of hierarchical micro-mesoporous ZSM-5 zeolites, where the role of TPAOH was identified as to act as a structure-directing agent and as a mineralizer allowing for the incorporation of aluminum into the MFI framework [24].…”