文献类型：期刊文献

英文题名：Low-Temperature and Solvent-Free Synthesis of FAU Zeolite: A Nanosized Platform for CO2 Capture and Ion-Exchange

作者：Yu, Xiaotao[1];Chen, Yuxuan[1];Jin, Yinying[1];Guo, Min[1];Lu, Song[1];Ying, Jiadi[1];Liu, Tiancun[1];Shen, Qi[1];Wang, Yeqing[1];Yu, Zhixin[1]

机构：[1]Shaoxing Univ, Inst New Energy, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China

年份：2025

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001528212900001)、、EI(收录号：20252918784772)、Scopus(收录号：2-s2.0-105010414270)、WOS

基金：This work was supported by the National Natural Science Foundation of China (22472100).

语种：英文

外文关键词：FAU zeolite; low-temperature synthesis; solvent-freeapproach; CO2 capacity; ion-exchangecapacity

外文摘要：The synthesis of zeolite at a mild temperature without the use of solvents presents a significant and ongoing challenge within industrial applications. In this work, we describe an approach to the solvent-free synthesis of FAU zeolite at 50 degrees C, achieving high crystalline yields and forming small crystal sizes ranging from approximately 30 to 100 nm. A study by CO2 isotherms at 273 K demonstrates that the nanosized Na-form FAU zeolite possesses high CO2 adsorption capacity (5.93 mmol g(-1)) at atmospheric pressure. This capacity is attributed to its elevated Na+ content and the presence of large pore sizes (approximately 0.74 nm), positioning it among the most effective systems reported to date. Furthermore, to assess its potential application in the softening of hard water, ion-exchange experiments involving Ca2+ and Mg2+ are pursued over the Na-form FAU sample at 298 K. The results showcase the ion-exchange capacity of 149.3 mg CaCO3/g zeolite and 82.8 mg MgCO3/g zeolite, which is rivaling that of LTA zeolite. These remarkable adsorption capabilities underscore the potential applications of this material in both domestic and industrial contexts.