高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (4): 698.

• 论文 • 上一篇    下一篇

莫来石的低温合成与结构研究

刘从华1,2, 邓友全1, 黄佺3, 李强3, 高雄厚2, 谭争国2   

  1. 1. 中国科学院兰州化学物理研究所, 兰州 730000;
    2. 中国石油兰州石化公司石油化工研究院, 兰州 730060;
    3. 中国石油兰州石化公司催化剂厂, 兰州 730060
  • 收稿日期:2002-07-11 出版日期:2003-04-24 发布日期:2003-04-24
  • 通讯作者: 邓友全(1957年出生),男,研究员,博士生导师,从事环境催化与清洁催化工艺研究.E-mail:ydeng@ns.lzb.ac.cn E-mail:ydeng@ns.lzb.ac.cn

Mullite Synthesis at Low Temperature and Its Crystal Structure Characterization

LIU Cong Hua1,2, DENG You Quan1, HUANG Quan3, LI Qiang3, GAO Xiong Hou2, TAN Zheng Guo2   

  1. 1. Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;
    2. Petrochemical Research Institute, Lanzhou Petrochemical Company of PetroChina, Lanzhou 730060, China;
    3. Catalyst Plant, Lanzhou Petrochemical Company of PetroChina, Lanzhou 730060, China
  • Received:2002-07-11 Online:2003-04-24 Published:2003-04-24

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被引次数

31

摘要： 通过在高岭土中引入质量分数为1%～5%的钒以后,在700℃左右的较低温度下观察到莫来石相的生成,并结合酸、碱抽提反应过程制得较纯的莫来石.进一步研究了低温莫来石点阵参数的测定方法,发现低温钒-莫来石的晶胞体积比常规的高温莫来石大,表明钒进入了莫来石的骨架结构.另外,低温莫来石的形成动力学可表述为钒-高岭石低温共熔体迁移过程.

关键词: 高岭石, 钒, 莫来石, 晶胞体积, 低温共熔体

Abstract: Vanadium mullite had been surprisingly observed in the phase transition of kaolin in the presence 1%-5% vanadium at about 700 ℃,and quite a pure vanadium mullite could be obtained through the process of acid & base leaching reaction and separation. In addition, unit cell parameters of various mullites were especially determined by XRD and the unit cell volume of vanadium mullite formed at a low temperature was found to be greater than that of the common mullite, which could be deduced that vanadium incorporated into the mullite framework. Furthermore, the reaction process of vanadium mullite formation could be expressed as low melting vanadium kaolin eutectic transition.

Key words: Kaolin, Vanadium, Mullite, Unit cell volume, Eutectic

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