Pivotal role of fluorine in the preparation of faujasite-type zeolite with high surface area for toluene adsorption

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-02-21 DOI:10.1016/j.matlet.2025.138276

Qin Zhao, Yuanzhi Li, Lei Ji, Zhi Chen

引用次数: 0

Abstract

FAU-type zeolite (FAU@F-90) with a very high BET specific surface area (S_BET) of 1035.4 m²/g and a higher crystallinity is synthesized by using fluorinated silica gel. It not only exhibits a saturated adsorption capacity (C_s) of 288.7 mg/g for toluene, much higher than that of a referenced FAU-type zeolite (FAU-90) with a lower S_BET synthersized by using conventional silica gel (177.9 mg/g), but also superior adsorption–desorption recycling stability, which is in striking contrast to a substantial decrease in C_s after recyled for FAU-90 due to its lower crystallinity. This is ascribed to the pivatol of F⁻, which increases the r_SiO2/Al2O3 and the crystallinity of zeolite.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive