TY - JOUR
T1 - An advance in Raman studies of catalysts
T2 - Ultraviolet resonance Raman spectroscopy
AU - Li, Can
AU - Stair, Peter C.
N1 - Funding Information:
We gratefully acknowledge Valeriya Adeeva and Karl~irkeland for providing the sulfated zirconia and supported VPO catalysts. The Raman spectra in figure 1 were measured by Maritoni Litorja. Special thanks to Frank Modica and Jeffrey Miller for providing the zeolites and coked industrial catalysts. Acknowledgement is made to the Donors ofthe Petroleum Research Fund, administered by the American Chemical Society for partial support ofthis research. This project was also supported by the Center for Catalysis and Surface Science ofNorthwestern University.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 1996
Y1 - 1996
N2 - 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.
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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U2 - 10.1016/s0167-2991(96)80299-0
DO - 10.1016/s0167-2991(96)80299-0
M3 - Article
AN - SCOPUS:0012412463
VL - 101 B
SP - 881
EP - 890
JO - Studies in Surface Science and Catalysis
JF - Studies in Surface Science and Catalysis
SN - 0167-2991
ER -