Adsorption behavior of Mo-MEL zeolites for reducing VOCs from cooking oil fumes

Based on the increasing public awareness of the pollution and hazard of cooking oil fume, MEL-type zeolite with Mo incorporation via a self-developed recrystallization method was developed for the reduction of non-methane hydrocarbon (NMHC) in cooking oil fumes via adsorption process. Mo species is proved to exist both in the MEL zeolitic framework and MoO3 clusters through XRD, IR, N2 adsorption-desorption, SEM and UV-vis character-ization. Water vapor adsorption isotherms and 29Si NMR results indicate Mo-MEL owns superior hydrophobicity because of its high level of atoms coordination and lack of silanols. Toluene-TPD and dynamic adsorption results reveal the enhanced affinity to VOCs molecular on Mo-MEL, superior than Si-MEL and Al-MEL. The Mo-contained sample shows a considerable VOCs capacity under different humid conditions, suggesting its appli-cation potential for the adsorption and enrich of cooking VOCs, especially in humid condition.

Automated summary

By incorporating Mo into MEL zeolite via a self-developed recrystallization method, researchers developed a novel material for reducing NMHC in cooking oil fumes through the adsorption process. The Mo-MEL material exhibited superior hydrophobicity and enhanced affinity to VOCs molecules, making it a potential candidate for adsorption and enrichment of cooking VOCs, particularly in humid conditions.