Re-investigation of titanium silicalite by X-ray absorption spectroscopy: Are the novel titanium sites real?

Autor:	J. Faber, Boyan Boyanov, Gerry W. Zajac, James A. Kaduk, Timothy I. Morrison, D. S. Yang, David R. Fazzini, D. Duck, Shiyou Pei
Rok vydání:	1993
Předmět:	X-ray absorption spectroscopy Extended X-ray absorption fine structure Inorganic chemistry chemistry.chemical_element General Chemistry Molecular sieve Catalysis Crystallography chemistry.chemical_compound chemistry Titanium atom Zeolite Organometallic chemistry Titanium
Zdroj:	Catalysis Letters. 21:333-344
ISSN:	1572-879X 1011-372X
DOI:	10.1007/bf00769485
Popis:	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) A. 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c39d05380d1fd43ae5f5d30e9c6ccd78 https://doi.org/10.1007/bf00769485 Zobrazit plný text záznamu Full text from SpringerLink