Zeolite ZSM‐5 synthesized from natural silica sources and its applications: a critical review

Abstract

As a well‐known porous inorganic material formed of aluminosilicate structures, Zeolit Socony Mobil Number 5 (ZSM‐5) zeolite has been widely used for various applications, especially oil‐chemical conversion processes and environmental pollution treatment. This study provides an overview of the natural sources as well as the role and categorization of structural compounds used for the synthesis of ZSM‐5. Overall, clay, natural minerals, or leftovers from agricultural and industrial activities (all of which offer several advantages, such as low cost, availability, and environmental friendliness) have been used to manufacture ZSM‐5. Moreover, green structural directing agents (known as soft templates) have been increasingly employed to replace pure chemicals in the production of ZSM‐5, aiming to decrease unexpected effects on the environment. This research orientates the production of ZSM‐5 zeolite on a low‐cost and environmentally friendly industrial scale. © 2023 Society of Chemical Industry (SCI).

软模板法制备多级孔沸石分子筛的研究进展

“…AlPO-5、SAPO-34和SAPO-5等多种多级孔分子 筛 [2,26,27] . 本文从不同种类的多级孔沸石分子筛展开, 系统地阐述了不同软模板剂对多级孔分子筛结构及催 化性能的影响, 分析了软模板法现有的局限性, 并对多 级孔沸石分子筛制备未来的发展方向做出了展望.…”

Hydroisomerization Catalysts for High-Quality Diesel Fuel Production

“…In this regard, the development of innovative syntheses and alternative raw materials have a focal point. An example of a recent eco-friendly approach is template-free synthesis, which has been tested for the production of the MFI framework structure [173][174][175]. Notably, tubular clay nanomaterials, specifically Halloysite, have been utilized as triple-functional materials: the source of alumina and silica, and hard template [176][177][178][179][180].…”

Synthesis of ZSM‐5 zeolite from fly ash by one‐pot hydrothermal method for methylene blue removal

“…Its unique pore structure, adjustable framework Si/Al ratio, shape selectivity, solid acidity, ion exchange capacity, thermal stability, and structural network make it a highly promising material for applications in petrochemical and fine chemical processes. 11,12 ZSM-5 finds extensive use in catalytic cracking, methanol-to-olefins, 13,14 methanol-toaromatics, 15,16 environmental protection, 17,18 and advanced functional materials. 19,20 In recent years, a large number of studies have been conducted on the preparation of zeolites from coal fly ash (CFA) and their application in wastewater adsorption.…”