One-pot non-template synthesis of hierarchical ZSM-5 from kaolin source

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

“…The excess NaOH acted as a desilicating agent forming mesopores in the formed zeolite crystals. [ 179 ] Other one‐step template‐free syntheses of mesoporous ZSM‐5 followed a combination of two strategies: I) the silicalite‐1 seed‐induced interface assembly and II) the acidic co‐hydrolysis/condensation of aluminosilicate species and alkali‐earth metals. [ 180 ] Single crystalline mesoporous ZSM‐5 was synthesized in a one‐pot using sodium carbonate, yielding uniform crystals around 200–300 nm in size with high pore volume.…”

Synthesis of ZSM-5 zeolites from biomass power plant ash for removal of ionic dyes from aqueous solution: equilibrium isotherm, kinetic and thermodynamic analysis

“…In fact, the presence of hysteresis loops at high (P/P 0 ¼ 0.5-0.9) and low pressures (P/P 0 ¼ 0.15-0.4) is a universal phenomenon that emerged in many studies. [41][42][43][44] It has been proved that highpressure hysteresis results from the aggregation of zeolite particles to form secondary mesoporous combined with microporous. 45 As for low-pressure hysteresis loops, it is a phenomenon that always happens to the synthesis of high siliceous ZSM-5 zeolites (Si : Al > 80).…”

Enhanced Removal of Soluble and Insoluble Dyes over Hierarchical Zeolites: Effect of Synthesis Condition

“…The optimum concentration was estimated by identifying the XRD intensity of the samples which is proved as a simple method to distinguish zeolite crystallinity [23]. Figure S1 exhibits the crystallinity of ZSM-5 based on Equation 2 This pattern matched with pure MFI type zeolite without any other amorphous or crystalline impurities [24,25]. The pattern exhibited no significant changes after the treatment which shows that zeolite still maintained the MFI structure.…”