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UV Resonance Raman Spectroscopic Identification of Titanium Atoms in the Framework of TS‐1 Zeolite
Author(s) -
Li Can,
Xiong Guang,
Xin Qin,
Liu Jianke,
Ying Pinliang,
Feng Zhaochi,
Li Jian,
Yang Wubin,
Wang Yongzhong,
Wang Guiru,
Liu Xiyao,
Lin Min,
Wang Xieqing,
Min Enze
Publication year - 1999
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/(sici)1521-3773(19990802)38:15<2220::aid-anie2220>3.0.co;2-g
Subject(s) - raman spectroscopy , titanium , resonance raman spectroscopy , zeolite , resonance (particle physics) , molecular sieve , excited state , transition metal , spectroscopy , materials science , chemistry , photochemistry , atomic physics , catalysis , organic chemistry , optics , metallurgy , physics , adsorption , quantum mechanics
Framework titanium atoms in titanium‐substituted silicalite (TS‐1) can be identified by UV resonance Raman spectroscopy since the associated Raman bands at 1125, 530, and 490 cm −1 (see figure) are observed only when the charge transfer transition associated with the framework Ti atoms is excited by a UV laser. Thus, framework Ti atoms can be distinguished from nonframework Ti atoms and other defect sites. This method can be applicable to identifying transition metal atoms in the frameworks of other molecular sieves.