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The crystal structure of B-Si pentasil zeolite molecular sieve was determined by means of the x-ray diffraction for polycrystalline samples and refined by Rietveld method.The parameters of the unit cell are e=19.983(1)A;b=19.773(1)A;c=13.303(1)A.Its space group is D2h1G-Pnma The framework topology found agrees with reported Si-Al ZSM-5zeolite molecular sieves.It is concluded from the structural determination that B is introduced into the framework of this sample.
The crystal structure of B-Si pentasil zeolite molecular sieve was determined by means of the x-ray diffraction for polycrystalline samples and refined by Rietveld method. The parameters of the unit cell are e = 19.983 (1) A; b = 19.773 ) A; c = 13.303 (1) A. Its space group is D2h1G-Pnma The framework topology found agrees with reported Si-Al ZSM-5 zeolite molecular sieves. It is concluded from the structural determination that B is introduced into the framework of this sample.