高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (9): 1537.

• 论文 •    下一篇

微孔磷酸铝AIPO4-HDA的热分解过程研究

肖丽萍1, 徐如人1,2   

  1. 1. 浙江大学化学系, 杭州 310027;
    2. 吉林大学化学学院, 长春 130023
  • 收稿日期:2003-03-24 出版日期:2003-09-24 发布日期:2003-09-24
  • 通讯作者: 徐如人(1932年出生).男,教授,博士生导师,中国科学院院士,从事分子筛合成化学研究.E-mail:rrxu@mail.jlu.edu.cn E-mail:rrxu@mail.jlu.edu.cn
  • 基金资助:

    吉林大学无机合成与制备化学国家重点实验室开放基金(批准号:2002-005)

Thermal Decomposition of Microporous Aluminophosphate AlPO4-HDA

XIAO Li-Ping1, XU Ru-Ren1,2   

  1. 1. Department of Chemistry, Zhejiang University, Hangzhou 310027, China;
    2. College of Chemistry, Jilin University, Changchun 130023, China
  • Received:2003-03-24 Online:2003-09-24 Published:2003-09-24

摘要: 采用差热-热重-质谱(TG-DTA-MS)、粉末X射线衍射(XRD)、红外光谱(FTIR)和固体核磁(Solid-State-MAS-NMR)等技术详细地研究了微孔磷酸铝晶体AlPO4-HDA中模板剂的热分解过程.结果表明,该模板剂的热分解分3步进行:第一步是模板剂和无机骨架之间的部分氢键断裂;第二步为模板剂的Hof-mann降解反应和β-消除反应;第三步是残留积碳的氧化分解反应.固体MASNMR的研究结果表明,随着模板剂的脱出.无机骨架中铝和磷的配位状态发生了变化.

关键词: 热分解, AlPO4-HDA, 1, 6-己二胺

Abstract: Thermal decomposition of microporous aluminophosphate AlPO4-HDA has been investigated by using thermogravimetric-differential thermal analysis coupled with mass spectrometry(TG-DTA-MS), X-ray diffraction(XRD), Fourier transform infrared (FTIR) and solid-state MAS NMR spectroscopy. The results show that the template decomposition involves three steps. First, the H-bondings between the inorganic framework and the template are broken; then, the template undergoes sequential Hofmann degradation reactions followed by β-eliminations and oxidations; finally, the remaining organic components are removed at a high temperature. The results obtained by using MAS NMR indicate that there is a change in the coordination state of certain framework Al and Pwith the partial removal of the template.

Key words: Thermal decomposition, AlPO4-HDA, 1,6-Hexanediamine

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