Citation: Cheng Hua XU, Shao Jie LU, Gui Ying DENG, Fa Li QIU. The Effect of Al³⁺, Na⁺, NH₄⁺ on Ti Content in the Preparation of Ti-ZSM-5[J]. Chinese Chemical Letters, ;1999, 10(8): 713-716. shu

The Effect of Al³⁺, Na⁺, NH₄⁺ on Ti Content in the Preparation of Ti-ZSM-5

Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041

Received Date: 15 February 1999

Thc effeet of Al²⁺. NH₄, Na⁺ on the Ti content in the pmparation of Ti-ZSM-5 by the isomorphous substitution of ZSM-5 using gaseous TiCl₄ as titanium resource has heen im estigatcd It is surprisingly found that although the direef ratio exists heween the Ti conmnt and the content of the skeletal Al:y=(0.08x²+0.57x+1.23 (hereyrepresents TiO₂% and xreprcwnts Al²O₃%). but the catalytic activities of Ti-ZSM-5 for the oxidation of styrene sharply rise with the decrease of TiO₂%. The skeletal Al hinders the Ti incorporation into the framework of molmular sim, characterised by FT-IR chniyuc. At the same time. NH₄⁺ ion has no etlcct on the Ti incorporation. but Na ion does.
- Ti-ZSM-5,
- Ti content,
- styrene,
- catalytic oxidation
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