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Citation: Zhao Qi, Han Xiu-Wen, Liu Xiu-Mei, Zhai Run-Sheng, Lin Li-Wu, Bao Xin-He, Guo Xin-Wen, Li Gang, Wang Xiang-Sheng. Studies on the TS-1 Zeolites Synthesized by Tetrapropylammonium Bromide as Template[J]. Acta Physico-Chimica Sinica, ;1998, 14(10): 906-912. doi: 10.3866/PKU.WHXB19981009 shu

Studies on the TS-1 Zeolites Synthesized by Tetrapropylammonium Bromide as Template

1.
State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy Sciences,Dalian 116023

Received Date: 12 January 1998
Available Online: 15 October 1998

The influences of the content of titanium, the variety of the alkali and the amounts of the templates in the gels on the synthesis of the TS-1 zeolites prepared by means of tetrapropylammonium bromide (TPABr) as a template were investigated by 1H→13C CP/MAS NMR, 29SiMAS NMR, IR, XRD and element analysis techniques. The results showed that the structures of the resultant TS-1 zeolites were transferred from monoclinic symmetry to orthorhombic symmetry with the increase of the titanium content in the framework. The added alkali didn't act as a template in the synthesis of TS-1 zeolites, but the strong alkali conditions were of benefit to the incorporation of the titanium atoms into the lattices. When the molar ratios of TPABr/SiO2 in the gels varied from 0.05 to 0.25, the Ti content in the framework showed independence of the amounts of TPABr in gels.
- 29Si MAS NMR,
- 1H→13C CP/MAS NMR,
- IR,
- TS-1 zeolites,
- Tetrapropylammonium bromide
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