Facile and rapid synthesis of highly crystalline mesoporous zeolite FAU

Koohsaryan, Esmat; Anbia, Mansoor

doi:10.1016/j.matlet.2018.10.139

Cited by 27 publications

(7 citation statements)

References 10 publications

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“…Generally, zeolites are prepared from freshly prepared sodium aluminosilicate gels using a wide range of silica and alumina sources via a hydrothermal reaction 1–4 . To obtain low‐cost synthetic zeolites, many researchers have explored the synthesis of low‐grade aluminosilicates such as kaolin, 5–14 bauxite, 15,16 bentonite, 1,17 halloysite, 18 illite, 10,19 and diatomite 20–22 …”

Section: Introductionmentioning

confidence: 99%

Synthesis and ion exchange of zeolites produced from kaolin for separation of oxygen from atmospheric air

Feltrin

Souza

Aquino³

et al. 2021

Int J Applied Ceramic Tech

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Lithium‐based zeolites are the most commonly used materials in PSA (pressure swing adsorption) oxygen concentration from atmospheric air. Synthesizing these adsorbents using mineral raw materials adapts to worldwide environmental requests, as only high‐purity chemical reactants such as aluminates and silicates are usually used. The present work aims to synthesize and characterize zeolites using kaolin as raw material by studying the influence of the metakaolinization temperature and SiO2/Al2O3 and H2O/Na2O molar ratios by experimental design. Ion exchange was used to incorporate lithium into synthesized zeolites. Kaolin was treated thermically and characterized, and zeolites were synthesized by a hydrothermal reaction. After synthesis, ionic exchange of Na+ ions by Li+ was performed. The results indicated the presence of three main phases, zeolites A, X, and P. Using ANOVA, it was found that the factors that contributed significantly to the formation of zeolite X were the H2O/Na2O and SiO2/Al2O3 molar ratios. For zeolite A, the major influence was by the metakaolinization temperature and for zeolite P none of the factors was influential. Zeolites that incorporated higher amounts of lithium showed higher N2 adsorption potential, indicating that even without pure phases formed, it was possible to obtain similar adsorption efficiency to commercial zeolite.

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Section: Introductionmentioning

confidence: 99%

Synthesis and ion exchange of zeolites produced from kaolin for separation of oxygen from atmospheric air

Feltrin

Souza

Aquino³

et al. 2021

Int J Applied Ceramic Tech

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“…Herein, zeolite 13X was indispensable to induce nucleation, while PEG was needed to enhance the crystallization of the synthesis gel since it provided a more basic medium, which is beneficial for the dissolution of the starting materials. [289] Nanozeolites and Their Assembly: Nanozeolite assemblies of FAU type zeolite X under the form of nanoparticles, nanosheets or nanorods are also a new point of interest. In this aspect, layerlike zeolites are a recently developed type of structure, which have already been discussed extensively in a review by Reiprich et al [282] Layer-like zeolites, which are shown in Figure 16, consist of branched zeolite crystals and plates.…”

Section: Zeolite Xmentioning

confidence: 99%

Section: Synthesis Of Hierarchical 12‐mr Zeolitesmentioning

confidence: 99%

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

et al. 2020

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Zeolites are highly crystalline aluminosilicates with welldefined pores that are constructed of SiO 2 and AlO 4 tetrahedra. These tetrahedra can be linked together in different unique ways to form various materials with a specific topology. [1] According to the International Zeolite Association (IZA), more than 250 different topologies, which are all assigned with a three-letter code, have been identified. [2] The micropores in zeolites are typically constructed from 8, 10, or 12 tetrahedral atoms

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“…Several types of signals are produced from the projected surface, including Auger and secondary electrons, x-ray fluorescence, and multi-energy photons. [78] The analysis of chemical composition is based on the dispersion of energy (EDS). [79] Thermogravimetric analysis (TGA) is a method that involves the measurement of the mass loss of a sample over time.…”

Section: Characterization Of Materialsmentioning

confidence: 99%

Hydrothermal synthesis of zeolite Y from green materials

et al. 2021

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Several probes have been conducted by the scientific community to reduce emissions of greenhouse gases such as carbon dioxide (CO 2 ). A zeolitic material is capable of CO 2 adsorption with the aid of such technologies. Our present work is to efficiently synthesize zeolite Y with four Si/Al ratios (2.0, 2.5, 3.0, and 3.5) from green materials such as rice husk ash (source of Si) and metakaolin (source of Al). The method for preparing zeolite Y involves hydrothermal synthesis in a hydrodynamic reactor at 120 C temperature, for a reaction time of 24 hours. These synthetic zeolites represent high values for surface area as well as pore volume in micropore range and are compatible with the size of CO 2 molecules. The zeolite Y (with Si/Al ratio 3.5) has an absorption capacity of 3.35 mmol CO 2 /g at (900 kPa) pressure, thereby

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Facile and rapid synthesis of highly crystalline mesoporous zeolite FAU

Cited by 27 publications

References 10 publications

Synthesis and ion exchange of zeolites produced from kaolin for separation of oxygen from atmospheric air

Synthesis and ion exchange of zeolites produced from kaolin for separation of oxygen from atmospheric air

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

Hydrothermal synthesis of zeolite Y from green materials

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