期刊
ACS OMEGA
卷 1, 期 5, 页码 1034-1040出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.6b00266
关键词
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资金
- National Key Research and Development Program of China [2016YFB0301704]
- National Natural Science Foundation of China [21506021]
- Fundamental Research Funds for Central Universities [DUT16RC(4)11]
- China Postdoctoral Science Foundation [2014M551094]
Titanium silicalite-1 (TS-1) with little extra-framework Ti was hydrothermally synthesized in a tetrapropylammonium hydroxide system using starch as the additive. The influences of the amount of starch added on the coordination states of titanium ions and the functional mechanism of starch were studied by various characterization means. The addition of starch slowed the crystallization rate of TS-1 so that the insertion rate of titanium to the framework matched well with that of silicon. Therefore, the generation of extraframework Ti, including the anatase TiO2 and octahedrally coordinated titanium, was eliminated. The catalytic performances of the TS-1 samples were evaluated in the epoxidation of 1-butene to produce butene oxide. The catalytic activity of TS-1 was improved significantly due to the increasing amount of framework Ti.
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