REINVESTIGATION OF TITANIUM SILICALITE BY X-RAY-ABSORPTION SPECTROSCOPY - ARE THE NOVEL TITANIUM SITES REAL

被引：94

作者：

PEI, S ^{[1
]}

ZAJAC, GW ^{[1
]}

KADUK, JA ^{[1
]}

FABER, J ^{[1
]}

BOYANOV, BI ^{[1
]}

DUCK, D ^{[1
]}

FAZZINI, D ^{[1
]}

MORRISON, TI ^{[1
]}

YANG, DS ^{[1
]}

机构：

[1] IIT,DEPT PHYS,CHICAGO,IL 60616

来源：

CATALYSIS LETTERS | 1993年 / 21卷 / 3-4期

关键词：

EXAFS; ZEOLITE; TITANIUM SILICALITE;

D O I：

10.1007/BF00769485

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

EXAFS studies have been carried out on titanium silicalite-1 (TS-1). The titanium atom is coordinated to four oxygen atoms at the distance of 1.80(1) angstrom. There is no evidence for the presence of 5- and 6-coordinated titanium species or the novel 4-coordinated titanium species involving [TiO(x)] units sharing edges with [SiO4] units. The EXAFS spectrum of TS-1 appears to be consistent with the model that titanium resides at the tetrahedral sites of the framework.

引用

页码：333 / 344

页数：12

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