Electron Spin Resonance Study on the Nature of Titanium in Titanosilicate ETS-10 Molecular Sieve

机译：电子旋转共振研究对钛硅酸盐ETS-10分子筛的性质

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Electron spin resonance (ESR) spectroscopy is used to study the nature of titanium in titanosilicate ETS-10 molecular sieve. Reducibility of titanium in ETS-10 was studied by various reduction methods which was then compared with TS-1 molecular sieve. Dehydration at elevated temperature under vacuum generates Ti(III) ions in ETS-10, but not in TS-1. The Ti(III) centers, however, can formed both in ETS-10 and TS-1 after γ-irradiation at 77 K of activated samples. ESR parameters of Ti(III) in these two materials are distinctly different from each other and can be explained on the basis of octahedral and tetrahedral coordination of titanium in ETS-10 and TS-1, respectively. This difference is further evident from their interaction towards CO at high temperature. Adsorption of other molecules on ETS-10 does not have any significant influence on Ti(III) ion indicating that such molecules do not coordinate directly with framework titanium.

机译：电子旋转共振（ESR）光谱学用于研究钛硅酸盐ETS-10分子筛中钛的性质。通过各种还原方法研究了ETS-10中钛的再减少，然后与TS-1分子筛进行比较。在真空下升高的温度下脱水产生ETS-10中的Ti（III）离子，但不在TS-1中产生。然而，Ti（III）中心可以在γ-10和TS-1之后在77k的活化样品下辐射后形成。这两种材料中Ti（III）的ESR参数彼此明显不同，并且可以根据ETS-10和TS-1中的钛和四面体配位来解释。这种差异从它们对高温的副作用的相互作用进一步明显。对ETS-10上的其他分子的吸附对Ti（III）离子没有任何显着影响，表明这些分子不直接与框架钛系坐标。

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《Tokyo conference on advanced catalytic science and technology》|1999年||共6页
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A. M. Prakash; Larry Kevan;
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1. Electron Spin Resonance Evidence for Isomorphous Substitution of Titanium into Titanosilicate TiMCM-41 Mesoporous Molecular Sieve [J] . A. M. Prakash, Hyung Mi Sung-Suh, Larry Kevan The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical . 1998,第5期

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4. Electron Spin Resonance Study on the Nature of Titanium in Titanosilicate ETS-10 Molecular Sieve [C] . A. M. Prakash, Larry Kevan Tokyo conference on advanced catalytic science and technology . 1999

机译：电子旋转共振研究对钛硅酸盐ETS-10分子筛的性质
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Electron Spin Resonance Study on the Nature of Titanium in Titanosilicate ETS-10 Molecular Sieve

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