Oxygen chemisorption on MoS/sub 2/ and commercial hydrotreating catalysts

Journal Article · Tue Nov 01 04:00:00 EST 1983 · J. Catal.; (United States)

OSTI ID:5318461

Bodrero, T A; Bartholomew, C H

Oxygen chemisorption on unsupported MoS/sub 2/ and commercial hydrotreating catalysts was studied as a function of adsorption pressure and temperature and as a function of measurement technique. Chemisorption measurements were made using conventional static adsorption and pulse-flow chromatographic methods. Oxygen uptakes measured by either technique were found to be highly temperature dependent, while only slightly dependent on pressure. Static adsorption measurements at -78/sup 0/C and pulse-flow measurements at 25/sup 0/C were found to be reproducible, well correlated and the most suitable for avoiding bulk oxidation effects. The effects of preadsorbed H/sub 2/S on oxygen uptake were investigated and found to be significant. In the case of the commercial HDS/HDN catalysts, the order of hydrodesulfurization (HDS) activity was predicted by the measured oxygen uptake while hydrodenitrogenation (HDN) activity was not. 42 references, 4 figures, 9 tables.

• Research Organization: Brigham Young Univ., Provo, UT
• OSTI ID: 5318461
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 84:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

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ADSORPTION
ADSORPTION ISOTHERMS
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
CHROMATOGRAPHY
COHERENT SCATTERING
DATA
DENITRIFICATION
DESORPTION
DESULFURIZATION
DIFFRACTION
ELEMENTS
EXPERIMENTAL DATA
FORECASTING
GAS CHROMATOGRAPHY
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
HYDROGENATION
INFORMATION
ISOTHERM
LOW PRESSURE
LOW TEMPERATURE
MEDIUM TEMPERATURE
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
NONMETALS
NUMERICAL DATA
OXIDATION
OXYGEN
PARTIAL PRESSURE
PRESSURE DEPENDENCE
SAMPLE PREPARATION
SCATTERING
SEPARATION PROCESSES
SORPTION
SORPTIVE PROPERTIES
SULFIDES
SULFUR COMPOUNDS
SURFACE AREA
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
X-RAY DIFFRACTION