Exploring depletion of volatile organic compounds (VOCs) in the air using Faujasite zeolite catalysts from fundamental to advanced

The emission of volatile organic compounds (VOCs) has resulted in various environmental hazards. Thus, developing technology that efficiently removes VOCs is necessary to mitigate the negative effects. Among several VOC elimination methods, zeolite catalyst usage in heterogeneous catalysis is a more popular and successful technique. Faujasite zeolite is a commonly used zeolite type in catalysis and VOC remediation as not only its high porosity with ion exchangeability but also can easily be synthesized in the laboratory using aluminosilicate precursors. This article aims to review VOC remediation studies mainly with FAU zeolite from fundamental to advanced. It has been observed in many publications that the zeolite synthesis parameters and their alterations directly affect the rate of VOC degradation. In this article, the catalytic oxidation method for removing VOCs in individual and mixtures from gas streams is briefly discussed with an emphasis on Faujasite zeolites and their characteristics. More than 140 papers were studied to build up this article. Although zeolites with larger pore sizes are more effective for removing VOCs, there are limited studies on the use of zeolite catalysts for cleaning up mixtures of VOCs. To enhance catalytic systems for industrial and environmental applications, advanced oxidation is being explored. More research is needed to modify zeolite's structure for a variety of VOCs to penetrate its inner surfaces and rapidly oxidize.