伊利石硅渣蒸汽辅助合成麦羟硅钠石及其对Cu2+的吸附研究

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (1): 194-200.

所属专题：资源综合利用

伊利石硅渣蒸汽辅助合成麦羟硅钠石及其对Cu²⁺的吸附研究

管冬冬¹, 历新宇¹, 陈爽¹, 苏重洋¹, 杨思祺², 姜男哲^1,2

1.延边大学理学院化学系,延吉 133000;
2.延边大学工学院高分子材料与工程系,延吉 133000

收稿日期:2020-08-07 修回日期:2020-09-09 出版日期:2021-01-15 发布日期:2021-02-07
通讯作者: 姜男哲,博士,副教授。E-mail:nzjiang@ybu.edu.cn
作者简介:管冬冬(1996—),女,硕士研究生。主要从事硅酸盐材料的合成及应用方面的研究。E-mail:2018010399@ybu.edu.cn
基金资助:
国家自然科学基金(21661031,21263026)

Steam-Assisted Synthesis of Magadiite from Illite Silica Residue andIts Adsorption of Cu²⁺

GUAN Dongdong¹, LI Xinyu¹, CHEN Shuang¹, SU Chongyang¹, YANG Siqi², JIANG Nanzhe^1,2

1. Department of Chemistry,College of Science,Yanbian University,Yanji 133000,China;
2. Department of Polymer Materials and Engineering,College of Engineering,Yanbian University,Yanji 133000,China

Received:2020-08-07 Revised:2020-09-09 Online:2021-01-15 Published:2021-02-07

摘要/Abstract

摘要： 以伊利石硅渣为原料,采用蒸汽辅助转化法(SAC)合成了高产率、高结晶度的纯相麦羟硅钠石(Magadiite)。采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)考察了钠硅比(n(Na₂O)/n(SiO₂))、晶化温度和晶化时间对合成样品结构及形貌的影响。结果表明,该体系的初步优化合成条件为钠硅比0.15,晶化温度170 ℃,晶化时间16 h,样品形貌为玫瑰花形(尺寸约12 μm)。对合成的Magadiite进行Cu²⁺吸附性能测试,探究了吸附剂用量、pH值、吸附时间和Cu²⁺初始浓度对吸附效果的影响。在吸附剂用量为2 g/L,pH值为5,吸附时间为30 min时,Magadiite对Cu²⁺的最大吸附量为25.99 mg/g。

关键词: 伊利石硅渣, 蒸汽辅助转化, 麦羟硅钠石, Cu²⁺, 吸附性能

Abstract: The pure phase magadiite with high yield and high crystallinity was synthesized using illite silica residue by steam-assisted conversion (SAC).X-ray diffractometer (XRD) and scanning electron microscopy (SEM) were used to investigate the influences of Na₂O/SiO₂ molar ratio,crystallization temperature (T) and crystallization time (t) on the structure and morphology of synthesized samples.The results show that the preliminary optimization of synthesis conditions of this system are n(Na₂O)/n(SiO₂)=0.15,T=170 ℃,t=16 h,and the sample morphology is rosette-like (about 12 μm).The Cu²⁺ adsorption test of magadiite synthesized was carried out,and the effects of adsorbent dosage,pH value,adsorption time and Cu²⁺ initial concentration on the adsorption effect were studied.The results show that when the adsorbent dosage is 2 g/L,the pH value is 5,and the adsorption time is 30 min,the maximum adsorption capacity of magadiite for Cu²⁺ is 25.99 mg/g.

Key words: illite silica residue, steam-assisted conversion, magadiite, Cu²⁺, adsorption property

中图分类号:

TQ170.1

管冬冬, 历新宇, 陈爽, 苏重洋, 杨思祺, 姜男哲. 伊利石硅渣蒸汽辅助合成麦羟硅钠石及其对Cu²⁺的吸附研究[J]. 硅酸盐通报, 2021, 40(1): 194-200.

GUAN Dongdong, LI Xinyu, CHEN Shuang, SU Chongyang, YANG Siqi, JIANG Nanzhe. Steam-Assisted Synthesis of Magadiite from Illite Silica Residue andIts Adsorption of Cu²⁺[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(1): 194-200.

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伊利石硅渣蒸汽辅助合成麦羟硅钠石及其对Cu²⁺的吸附研究

Steam-Assisted Synthesis of Magadiite from Illite Silica Residue andIts Adsorption of Cu²⁺

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