Characterization of unsupported Ni-Mo hydrodesulfurization catalysts by oxygen chemisorption

Journal Article · Mon Nov 01 04:00:00 EST 1982 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(82)90305-0· OSTI ID:6478160

Bodrero, T A ^[1]; Bartholomew, C H; Pratt, K C

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1. Brigham Young Univ., Provo, UT

The O/sub 2/ uptake by a series of unsupported Ni-Mo catalysts with Ni contents from 0 to 100 at. % Ni was investigated. Both dyanmic and static adsorption techniques were used to study the O/sub 2/ uptake. For the catalysts with high Ni content (effectively Mo-promoted Ni catalysts), the hydrodesulfurization (HDS) catalytic activity decreased with increasing O/sub 2/ uptake. This finding suggested that high O/sub 2/ adsorption on the high Ni content catalysts may be due to the predominance of adsorption sites significantly less active for HDS than those in MoS/sub 2/ or Ni-promoted MoS/sub 2/. Similar correlation between HDS activity and MoS/sub 2/ and Ni-Mo suggested that the same kind of specific catalytic sites are involved in all three kinds of catalysts and that these sites selectively adsorb O/sub 2/. Both the static and dynamic O/sub 2/ adsorption measurements were found to be reliable for characterization studies of the active surface areas of the Ni-Mo catalysts over a range of Ni content of 0 to 60% Ni. (BLM)

• OSTI ID: 6478160
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 78:1; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
02 PETROLEUM
020400 -- Petroleum-- Processing
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
04 OIL SHALES AND TAR SANDS
040404 -- Oil Shales & Tar Sands-- Purification
ALLOYS
CATALYTIC EFFECTS
CHEMICAL REACTIONS
CHEMISORPTION
DATA
DESULFURIZATION
ELEMENTS
EXPERIMENTAL DATA
HYDROCARBONS
HYDROGENATION
INFORMATION
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN
SEPARATION PROCESSES
SORPTION
SURFACE PROPERTIES