硅锰渣复合粉煤灰水热合成NaA沸石及其表征

硅酸盐通报 ›› 2022, Vol. 41 ›› Issue (2): 634-639.

硅锰渣复合粉煤灰水热合成NaA沸石及其表征

朱思雨¹, 李丽¹, 刘泽¹, 张彤¹, 韩凤兰², 马真非¹, 刘佳钰¹

1.中国矿业大学(北京)化学与环境工程学院,北京 100083;
2.北方民族大学材料科学与工程学院,银川 750030

收稿日期:2021-07-28 修回日期:2021-09-19 出版日期:2022-02-15 发布日期:2022-03-01
通讯作者: 刘泽,博士,教授。E-mail:lzk1227@sina.com
作者简介:朱思雨(1995—),女,硕士研究生。主要从事工业固体废弃物综合利用研究。E-mail:zhusiyu_1996@163.com
基金资助:
宁夏回族自治区重点研发计划(2020BCE01001);国家自然科学基金联合基金(U20A20324)

Hydrothermal Synthesis and Characterization of Zeolite NaA Based on Combination of Silico-Manganese Slag and Fly Ash

ZHU Siyu¹, LI Li¹, LIU Ze¹, ZHANG Tong¹, HAN Fenglan², MA Zhenfei¹, LIU Jiayu¹

1. School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China;
2. School of Materials Science and Engineering, North Minzu University, Yinchuan 750030, China

Received:2021-07-28 Revised:2021-09-19 Online:2022-02-15 Published:2022-03-01

摘要/Abstract

摘要： 对硅锰渣进行高温煅烧预处理,并复合粉煤灰作为原料,采用水热法合成了结晶度良好的NaA沸石。研究了硅铝比(n(SiO₂)/n(Al₂O₃))、碱度(c(NaOH))、水热温度以及水热时间等条件对合成产物的影响。结果表明:在煅烧硅锰渣与粉煤灰以质量比为1∶1,n(SiO₂)/n(Al₂O₃)=2.2,反应温度为90 ℃,碱度为2 mol/L,反应时间为4 h的条件下即可合成结晶度良好且具备一定热稳定性的NaA沸石。相较于传统的以粉煤灰为原料合成NaA沸石,本实验掺入硅锰渣形成复合体系,为硅锰渣的资源化利用提供了新途径。

关键词: 资源利用, 硅锰渣, 粉煤灰, NaA沸石, 水热合成, 孔道结构

Abstract: The high crystallinity of zeolite NaA were prepared by hydrothermal method based on the combination of calcined silico-manganese slag (Si-Mn slag) and fly ash. The influence of n(SiO₂)/n(Al₂O₃), the concentration of NaOH, hydrothermal temperature and hydrothermal time on products were studied by single factor experiment. The results show that the zeolite NaA with good crystallinity and thermal stability can be synthesized at the condition of the mass ratio of calcined silico-manganese slag and fly ash=1∶1, n(SiO₂)/n(Al₂O₃)=2.2, temperature of 90 ℃, alkalinity of 2 mol/L and reaction time of 4 h. Compared with the traditional synthesis of the zeolite NaA with fly ash as raw material, the addition of silico-manganese slag makes it a composite system, providing a new way for the resource utilization of silico-manganese slag.

Key words: resource utilization, silico-manganese slag, fly ash, zeolite NaA, hydrothermal method, porous structure

中图分类号:

TQ424.25

朱思雨, 李丽, 刘泽, 张彤, 韩凤兰, 马真非, 刘佳钰. 硅锰渣复合粉煤灰水热合成NaA沸石及其表征[J]. 硅酸盐通报, 2022, 41(2): 634-639.

ZHU Siyu, LI Li, LIU Ze, ZHANG Tong, HAN Fenglan, MA Zhenfei, LIU Jiayu. Hydrothermal Synthesis and Characterization of Zeolite NaA Based on Combination of Silico-Manganese Slag and Fly Ash[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2022, 41(2): 634-639.

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