活化累托石绿色制备自成型A型分子筛泡沫的研究

doi:10.16552/j.cnki.issn1001-1625.2025.0864

硅酸盐通报 ›› 2025, Vol. 44 ›› Issue (12): 4623-4632.DOI: 10.16552/j.cnki.issn1001-1625.2025.0864

活化累托石绿色制备自成型A型分子筛泡沫的研究

仇秀梅^1,2, 刘意³, 刘亚东⁴, 蔡浩^1,2, 刘叶冬阳^1,2, 梁雅琪^1,2

1.湖北省地质实验测试中心,自然资源部稀土稀有稀散矿产重点实验室,武汉 430034;
2.湖北省地质局,资源与生态环境地质湖北省重点实验室,武汉 430034;
3.中国地质大学(武汉),材料与化学学院,武汉 430074;
4.湖北城市建设职业技术学院,武汉 430205

收稿日期:2025-08-27 修订日期:2025-09-30 出版日期:2025-12-15 发布日期:2025-12-30
通信作者: 刘意,博士,副教授。E-mail:Yiliu@cug.edu.cn
作者简介:仇秀梅(1987—),女,博士,高级工程师。主要从事非金属矿、固体废弃物综合利用、环境多孔材料的研究。E-mail:303984566@qq.com
基金资助:
湖北省自然科学基金地质创新发展联合基金项目(2024AFD397);湖北省地质局科技项目(KJ2025-51)

Green Preparation of Self-Forming Type A Zeolite Foam from Activated Rectorite

QIU Xiumei^1,2, LIU Yi³, LIU Yadong⁴, CAI Hao^1,2, LIU Yedongyang^1,2, LIANG Yaqi^1,2

1. Key Laboratory of Rare Earth and Rare Scattered Minerals, Ministry of Natural Resources, Hubei Geological Research Laboratory, Wuhan 430034, China;
2. Hubei Key Laboratory of Resources and Eco-Environment Geology, Hubei Geological Bureau, Wuhan 430034, China;
3. Faculty of Materials Science and Chemistry, China University of Geosciences (Wuhan), Wuhan 430074, China;
4. Hubei Urban Construction Vocational and Technological College, Wuhan 430205, China

Received:2025-08-27 Revised:2025-09-30 Published:2025-12-15 Online:2025-12-30

摘要/Abstract

摘要： 为突破传统分子筛依赖化工原料及外加黏结剂成型的局限,研究采用热活化制备活化累托石,并探究其经准固相法合成自成型A型分子筛的可行性。研究了600~1 000 ℃煅烧对累托石矿物物化性能的影响,经XRD、FTIR和SEM表征,累托石经1 000 ℃煅烧后骨架结构完全破坏,SiO₄四面体单元发生畸变,而AlO₆八面体单元发生分解,但化学组成基本保持稳定。合成实验表明,以1 000 ℃活化累托石为原料,在4A型分子筛晶种诱导下,按照Na₂O/Al₂O₃摩尔比1.00,H₂O/Na₂O摩尔比14.50,70 ℃晶化24 h可以直接形成纯度较高的自成型A型分子筛泡沫。经SEM、XRD等表征,该自成型A型分子筛具有较规则的立方体形貌,颗粒间致密堆叠,无需外加黏结剂即可形成抗压强度为1.45 MPa的自成型A型分子筛泡沫。该方法为累托石资源化利用及绿色低成本体型化分子筛的制备提供了新路径。

关键词: A型分子筛, 热活化, 累托石, 自成型, 多孔, 体型化

Abstract: In order to break through the limitations of traditional zeolites, which rely on chemical raw materials and additional binders for shaping, this study adopted thermal activation to prepare activated rectorite and explored the feasibility of synthesizing self-forming type A zeolite from it via a quasi-solid-state method. The effect of calcination at 600~1 000 ℃ on the physicochemical properties of rectorite ore was investigated. The results of XRD, FTIR, and SEM show that the framework structure of rectorite is completely destroyed after calcination at 1 000 ℃, SiO₄ tetrahedral units are distorted, while AlO₆ octahedral units decompose. However, the chemical composition of rectorite remains basically stable. Synthesis experiments demonstrate that using rectorite activated at 1 000 ℃ as the raw material, under the induction of type 4A zeolite seed crystals, high-purity self-forming type A zeolite foam could be directly formed under the following conditions: Na₂O/Al₂O₃ molar ratio of 1.00, H₂O/Na₂O molar ratio of 14.50, and crystallization at 70 ℃ for 24 h. The results of SEM, XRD, and other techniques reveal that the self-forming type A zeolite exhibits a relatively regular cubic lamorphology, with dense stacking between particles. A self-forming type A zeolite foam with a compressive strength of 1.45 MPa is formed without the need for additional binders. This method provides a new approach for the resource utilization of rectorite and the green, low-cost preparation of bodying zeolites.

Key words: type A zeolite, thermal activation, rectorite, self-forming, porous, bodying

中图分类号:

TQ424.25

仇秀梅, 刘意, 刘亚东, 蔡浩, 刘叶冬阳, 梁雅琪. 活化累托石绿色制备自成型A型分子筛泡沫的研究[J]. 硅酸盐通报, 2025, 44(12): 4623-4632.

QIU Xiumei, LIU Yi, LIU Yadong, CAI Hao, LIU Yedongyang, LIANG Yaqi. Green Preparation of Self-Forming Type A Zeolite Foam from Activated Rectorite[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2025, 44(12): 4623-4632.

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活化累托石绿色制备自成型A型分子筛泡沫的研究

Green Preparation of Self-Forming Type A Zeolite Foam from Activated Rectorite

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