An advance in Raman studies of catalysts: Ultraviolet resonance Raman spectroscopy

Can Li; Peter C. Stair

doi:10.1016/s0167-2991(96)80299-0

An advance in Raman studies of catalysts: Ultraviolet resonance Raman spectroscopy

Can Li, Peter C. Stair

Northwestern University

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

Recently an ultraviolet (UV) Raman spectrometer was assembled with the goal of improving Raman spectroscopy for catalysis and surface science studies. Using UV Raman spectroscopy, we have studied a spectrum of catalysts, such as coked reforming catalysts, ZSM-5 and USY zeolites treated with propene, sulfated zirconia catalysts: fresh and deactivated, and low-loading oxide catalysts. In particular, the chemical nature of coke species and the coke formation mechanism were investigated in detail. The results demonstrate that UV Raman spectroscopy can successfully avoid the surface fluorescence which often obscures normal Raman spectra. In addition, the Raman sensitivity is also greatly improved owing to the shorter excitation wavelength and resonance effect in some systems.

Original language	English
Pages (from-to)	881-890
Number of pages	10
Journal	Studies in Surface Science and Catalysis
Volume	101 B
DOIs	https://doi.org/10.1016/s0167-2991(96)80299-0
Publication status	Published - 1996

ASJC Scopus subject areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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T1 - An advance in Raman studies of catalysts

T2 - Ultraviolet resonance Raman spectroscopy

AU - Li, Can

AU - Stair, Peter C.

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AB - Recently an ultraviolet (UV) Raman spectrometer was assembled with the goal of improving Raman spectroscopy for catalysis and surface science studies. Using UV Raman spectroscopy, we have studied a spectrum of catalysts, such as coked reforming catalysts, ZSM-5 and USY zeolites treated with propene, sulfated zirconia catalysts: fresh and deactivated, and low-loading oxide catalysts. In particular, the chemical nature of coke species and the coke formation mechanism were investigated in detail. The results demonstrate that UV Raman spectroscopy can successfully avoid the surface fluorescence which often obscures normal Raman spectra. In addition, the Raman sensitivity is also greatly improved owing to the shorter excitation wavelength and resonance effect in some systems.

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