Laser Raman spectroscopy of Co-Mo/γ-Al2O3 catalysts. Characterization using pyridine adsorption

G. L. Schrader; C. P. Cheng

doi:10.1021/j100242a021

Laser Raman spectroscopy of Co-Mo/γ-Al₂O₃ catalysts. Characterization using pyridine adsorption

G. L. Schrader, C. P. Cheng

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

19 Scopus citations

Abstract

Laser Raman spectra of pyridine adsorbed on various oxidic cobalt molybdate hydrodesulfurization catalysts were recorded. Bronsted acidity resulted as molybdenum was added to the γ-Al₂O₃ surface. However, inhibition of pyridine adsorption occurred when large amounts of MoO₃ were formed. Addition of cobalt to Mo/γ-Al₂O₃ catalysts produced a new adsorption site whose pyridine adsorption bands were intermediate between bands for Bronsted and Lewis acidity. The results demonstrate that pyridine adsorption can be used to determine the structural arrangement of molybdenum and cobalt species on the γ-Al₂O₃ surface.

Original language	English (US)
Pages (from-to)	3675-3681
Number of pages	7
Journal	Journal of physical chemistry
Volume	87
Issue number	19
DOIs	https://doi.org/10.1021/j100242a021
State	Published - 1983
Externally published	Yes

ASJC Scopus subject areas

General Engineering
Physical and Theoretical Chemistry

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10.1021/j100242a021

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title = "Laser Raman spectroscopy of Co-Mo/γ-Al2O3 catalysts. Characterization using pyridine adsorption",

abstract = "Laser Raman spectra of pyridine adsorbed on various oxidic cobalt molybdate hydrodesulfurization catalysts were recorded. Bronsted acidity resulted as molybdenum was added to the γ-Al2O3 surface. However, inhibition of pyridine adsorption occurred when large amounts of MoO3 were formed. Addition of cobalt to Mo/γ-Al2O3 catalysts produced a new adsorption site whose pyridine adsorption bands were intermediate between bands for Bronsted and Lewis acidity. The results demonstrate that pyridine adsorption can be used to determine the structural arrangement of molybdenum and cobalt species on the γ-Al2O3 surface.",

author = "Schrader, {G. L.} and Cheng, {C. P.}",

year = "1983",

doi = "10.1021/j100242a021",

language = "English (US)",

volume = "87",

pages = "3675--3681",

journal = "Journal of physical chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Laser Raman spectroscopy of Co-Mo/γ-Al2O3 catalysts. Characterization using pyridine adsorption

AU - Schrader, G. L.

AU - Cheng, C. P.

PY - 1983

Y1 - 1983

N2 - Laser Raman spectra of pyridine adsorbed on various oxidic cobalt molybdate hydrodesulfurization catalysts were recorded. Bronsted acidity resulted as molybdenum was added to the γ-Al2O3 surface. However, inhibition of pyridine adsorption occurred when large amounts of MoO3 were formed. Addition of cobalt to Mo/γ-Al2O3 catalysts produced a new adsorption site whose pyridine adsorption bands were intermediate between bands for Bronsted and Lewis acidity. The results demonstrate that pyridine adsorption can be used to determine the structural arrangement of molybdenum and cobalt species on the γ-Al2O3 surface.

AB - Laser Raman spectra of pyridine adsorbed on various oxidic cobalt molybdate hydrodesulfurization catalysts were recorded. Bronsted acidity resulted as molybdenum was added to the γ-Al2O3 surface. However, inhibition of pyridine adsorption occurred when large amounts of MoO3 were formed. Addition of cobalt to Mo/γ-Al2O3 catalysts produced a new adsorption site whose pyridine adsorption bands were intermediate between bands for Bronsted and Lewis acidity. The results demonstrate that pyridine adsorption can be used to determine the structural arrangement of molybdenum and cobalt species on the γ-Al2O3 surface.

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Laser Raman spectroscopy of Co-Mo/γ-Al₂O₃ catalysts. Characterization using pyridine adsorption

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