无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (6): 20-23.doi: 10.11962/1006-4990.2019-0404

• 研究与开发 • 上一篇    下一篇

介孔氧化铝的结构调控及除氟性能研究

许乃才1,史丹丹2,黎四霞1   

  1. 1. 青海师范大学化学化工学院,青海西宁 810008
    2. 青海省科学技术信息研究所
  • 收稿日期:2020-01-12 出版日期:2020-06-01 发布日期:2020-06-12
  • 作者简介:许乃才(1984— ),男,理学博士,副教授,主要研究方向为无机功能材料,发表文章16篇;E-mail: xunc@qhnu.edu.cn(通讯作者)。
  • 基金资助:
    青海省自然科学基金项目(2018-ZJ-928Q);青海省盐湖资源化学重点实验室开放课题基金项目(2019-HYS-001);青海师范大学中青年教师科研基金项目;青海省高端创新人才“千人计划”项目

Research on structure regulation and fluorine removal property of mesoporous alumina

Xu Naicai1,Shi Dandan2,Li Sixia1   

  1. 1. School of Chemistry and Chemical Engineering,Qinghai Normal University,Xining 810008,China
    2. Qinghai Institute of Science and Technology Information
  • Received:2020-01-12 Online:2020-06-01 Published:2020-06-12

摘要:

以铝酸钠(NaAlO2)和氯化铝(AlCl3·6H2O)为铝源,分别以葡萄糖、壳聚糖、十六烷基三甲基溴化铵(CTAB)为结构导向剂,采用水热反应和高温煅烧技术制备了纳米氧化铝粉体材料。用X射线衍射(XRD)、扫描电镜(SEM)、氮气吸附-脱附和傅里叶变换红外光谱(FT-IR)等手段对产物进行了表征。结果表明,产物均为介孔γ-氧化铝(γ-Al2O3),呈纳米颗粒状形貌,分散较为均匀。其中,葡萄糖调控的γ-氧化铝具有较大的比面积(437 m 2/g)和孔体积(0.60 cm 3/g)。4种γ-氧化铝对氟离子(F -)的吸附结果表明,葡萄糖调控的γ-氧化铝除氟效果最好。

关键词: 介孔氧化铝, 氟离子, 吸附, 结构调控, 形貌

Abstract:

Nano-alumina powder materials were prepared by hydrothermal reaction and high-temperature calcination by using sodium aluminate(NaAlO2) and aluminum chloride(AlCl3·6H2O) as aluminum sources,and glucose,chitosan and CTAB as structure directing agents,respectively.The products were systematically characterized by the means of powder X-ray diffrac-tion(XRD),scanning electron microscope(SEM),N2 adsorption and desorption,and Fourier infrared spectroscopy(FT-IR). Results showed that all the products were γ-Al2O3 with mesoporous structure,which presented the nanoparticles morphology and good dispersion. Among them,γ-Al2O3 which regulated by glucose has a large specific surface area(437 m2/g) and pore volume (0.60 cm3/g).The adsorption results of four kinds of mesoporous γ-Al2O3 towards F- solution showed that the best defluorination effect was found in γ-Al2O3 adsorbent regulated by glucose.

Key words: mesoporous alumina, fluoride ions, adsorption, structure regulation, morphology

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