CJCU

Chem. J. Chinese Universities ›› 1987, Vol. 8 ›› Issue (12): 1059.

• Articles • Previous Articles     Next Articles

Study on the Structure of AlPO4-5 Type Molecular Sieve in the Framework P and Al Substituted Equal-Proportionally by Hetero-Atom(Si)

Meng Xianping1, Pang Wenqin1, Li Wangrong2, Liu Zhenyi2, Zhang Wanjing2   

  1. 1. Institute of Synthetic and Catalytic Chemistry, Jilin University, Ghangchun;
    2. Institute of Physical Chemistry, Peking University, Beijing
  • Received:1986-07-06 Online:1987-12-24 Published:1987-12-24

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Abstract: The structure of Si-APO-5 type molecular sieve synthesized by us was investi-gated by X-ray diffraction for polycrystalline and the parameters were refined by Rietveld method. We discovered, although in average each unit cell 3.13 silicon atoms substituted equal-proportionally P, Al and entered framework of molecular sieve, SAPO-5 sample (10900) still keepcd the same symmetry and geometric configuration as APO-5. In addition to, the arrange of Si, P, Al in the framework were disorder on the whole, therefore, framework of molecular sieve lost polarity along[001] and cann't carry charge. So as Si atom substituted Pand Al atoms in framework equnl-proportionally, catalytic functions of APO-5 type molecular sieve cann't be outstanding adjusted.

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