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Citation: Huang Yin-Yan, Zhao Bi-Ying, Xie You-Chang. Structural Characterization of Solid Superacid Catalyst SO^2-₄-WO₃-ZrO₂[J]. Acta Physico-Chimica Sinica, ;1995, 11(06): 547-552. doi: 10.3866/PKU.WHXB19950614 shu

Structural Characterization of Solid Superacid Catalyst SO^2-₄-WO₃-ZrO₂

1.
The Institute of Physical Chemistry,Peking University,Beijing 100871

Received Date: 4 April 1994
Available Online: 15 June 1995

Solid superacid catalyst SO4(2-)-WO3-ZrO2 was characterized by means of XRD,DTA-TG, and surface area measurement techniques. The dependence of the surface area, SO42- content of the catalyst on calcination temperature was measured. It was found that there is a synergy to a certain degree between SO42- and WO3 with respect to the delay of ZrO2 crystallization, the stabilization of the tetra nal ZrO2 and the enlargement of the surface area of the catalyst. The addition of WO3 is beneficial to the stabilization of SO42- and remarkably increases the stability of SO42- at high temperature.
- Solid superacid,
- SO^2-₄-WO₃-ZrO₂,
- Stability of tetra nal ZrO₃
  ,
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Structural Characterization of Solid Superacid Catalyst SO2-4-WO3-ZrO2

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Structural Characterization of Solid Superacid Catalyst SO^2-₄-WO₃-ZrO₂