Mullite Synthesis at Low Temperature and Its Crystal Structure Characterization

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (4): 698.

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Mullite Synthesis at Low Temperature and Its Crystal Structure Characterization

LIU Cong Hua^1,2, DENG You Quan¹, HUANG Quan³, LI Qiang³, GAO Xiong Hou², TAN Zheng Guo²

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

Abstract

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

CLC Number:

O612

TrendMD:

LIU Cong Hua, DENG You Quan, HUANG Quan, LI Qiang, GAO Xiong Hou, TAN Zheng Guo . Mullite Synthesis at Low Temperature and Its Crystal Structure Characterization[J]. Chem. J. Chinese Universities, 2003, 24(4): 698.

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Mullite Synthesis at Low Temperature and Its Crystal Structure Characterization

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