Effect of aluminum source and water content in the precursor suspensions used for the synthesis of nanosized zeolite Y on CO₂ adsorption capacity

IF 4.7 3区材料科学 Q1 CHEMISTRY, APPLIED Microporous and Mesoporous Materials Pub Date : 2025-01-09 DOI:10.1016/j.micromeso.2025.113491

Chalermpan Keawkumay , Narongrit Sosa , Nattawut Osakoo , Sanchai Prayoonpokarach , Jatuporn Wittayakun , Saran Youngjan , Pawan Boonyoung , Pongtanawat Khemthong , Abdallah Amedlous , Svetlana Mintova

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Abstract

This study reports the template-free hydrothermal synthesis of Y zeolites, varying aluminum sources (aluminum powder and sodium aluminate), and water content in the synthesis precursor suspensions (140, 180, and 92 mol). Although all samples were crystallized at 90 °C for 4 h, significant differences in crystal size and phase purity were observed. Zeolite Y synthesized with 140 mol of water and sodium aluminate resulted in crystal sizes of 50–100 nm, while reducing the water content to 92 mol produced smaller crystals (50–80 nm) but introduced a GIS impurity phase. The zeolites were tested for CO₂ adsorption, revealing a direct relationship between crystal size and adsorption efficiency. Smaller crystal sizes demonstrated higher CO₂ adsorption capacities, with zeolites synthesized from aluminum powder outperforming those from sodium aluminate. This study highlights the critical role of synthesis conditions in tailoring the structure and performance of Y zeolites for CO₂ adsorption applications.

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制备纳米Y沸石的前驱体悬浮液中铝源和水含量对CO₂吸附能力的影响

本研究报道了Y型沸石的无模板水热合成，不同的铝源（铝粉和铝酸钠）和合成前驱体悬浮液中的水含量（140、180和92 mol）。虽然所有样品在90°C下结晶4小时，但观察到晶体大小和相纯度的显著差异。用140 mol水和铝酸钠合成Y型沸石，晶体尺寸为50-100 nm，而将水含量降低到92 mol时，晶体尺寸较小（50-80 nm），但引入了GIS杂质相。对沸石的CO2吸附性能进行了测试，发现晶体大小与吸附效率有直接关系。晶粒尺寸越小，吸附CO2的能力越强，铝粉分子筛的吸附性能优于铝酸钠分子筛。这项研究强调了合成条件在调整Y型沸石的结构和性能方面的关键作用。

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.