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In this paper,the structure of titanium-silicon pentasil type molecular sieve which wesynthesized is studied with different methods.IR and Laser Raman spectral analyses indicate that the Ti-O-Si vibration occurs in the molecularsieve.It is proved by ESR analyses that Ti~(4+) is located in environment of distorted tetrahedron.Thestudy on the surface of Ti-Si pentasil type molecular sieve by XPS further verifies that Ti~(4+) in frameworkis present in the form of TiO_4 tetrahedron.The results of the electron probe micrograph analyses indicatethat Ti enters the framework of molecular sieve.X-ray powder diffractometer exactly determined unitcell parameters of Ti-Si pentasil type molecular sieve.The unit cell volume of Ti-Si zeolite increasedwith increasing the content of titanium which is consistent with the longer Ti-O distance,comparedwith the Si-O one.
In this paper, the structure of titanium-silicon pentasil type molecular sieve which wesynthesized is studied with different methods. IR and Laser Raman spectral analyzes that the the Ti-O-Si vibration occurs in the moleculars. It is proved by ESR analyzes that Ti ~ (4+) is located in environment of distorted tetrahedron. Study on the surface of Ti-Si pentasil type molecular sieve by XPS further verifies that Ti ~ (4+) in framework of present in the form of TiO_4 tetrahedron.The results of the electron probe micrograph analyzes indicate that the Ti enters the framework of molecular sieve. X- ray powder diffractometer exactly determined unit cell parameters of Ti-Si pentasil type molecular sieve. The unit cell volume of Ti-Si zeolite increased with increasing content of titanium which is consistent with the longer Ti-O distance, comparedwith the Si-O one.