Zeolite-X synthesized from halloysite nanotubes and its application in CO2 capture

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2022-04-01 DOI:10.1016/j.jtice.2022.104281

Xinmei Lu, Liying Liu, Haoran Liu, Guo Tian, Gao Peng, Li Zhuo, Zhe Wang

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引用次数: 6

Abstract

Background

: Zeolite-X has good selective adsorption, ion exchange and hydrophilic properties, and has been widely studied and applied in the chemical industry. Halloysite nanotubes (HNTs), with a unique tubular microstructure, natural availability, and low cost. The use of HNTs to synthesize X zeolites reduces production costs, leading to large-scale industrial production applications.

Methods

: In this study, zeolite-X, with high crystallinity and a large specific surface area, was synthesized, for the first time, by purifying HNTs, calcining HNTs and hydrothermal synthesis. The influence of calcination time, crystallization temperature, crystallization time and NaOH concentration on the crystal phase and the static saturated water absorption of zeolite-X were investigated. The structure, shape and thermal stability of the synthesized zeolite-X were characterized by XRD, TEM, and FT-IR techniques and analysis methods.

Significant findings

: Zeolite-X synthesized by this method has good crystallinity, uniform particle size and similar thermal stability to industrial zeolite. This study reports a new synthesis method to obtain zeolite 13X, with potential application in CO₂ capture from flue gases.

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高岭土纳米管合成x型沸石及其在CO2捕集中的应用

背景:沸石- x具有良好的选择性吸附、离子交换和亲水性，在化工领域得到了广泛的研究和应用。高岭土纳米管(HNTs)，具有独特的管状结构，自然可用性和低成本。使用hnt合成X分子筛降低了生产成本，从而实现了大规模的工业生产应用。方法:本研究首次通过提纯HNTs、煅烧HNTs和水热合成，合成了结晶度高、比表面积大的沸石x。考察了煅烧时间、结晶温度、结晶时间和NaOH浓度对x沸石的结晶物相和静态饱和吸水率的影响。采用XRD、TEM、FT-IR等技术和分析方法对合成的沸石x的结构、形状和热稳定性进行了表征。重要发现:该方法合成的x型沸石结晶度好，粒度均匀，热稳定性与工业沸石相似。本文报道了一种合成沸石13X的新方法，该方法在烟气CO2捕集中具有潜在的应用前景。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.