Exchange and desulfurization of thiophene over synthetic and commercial CO/Mo catalyst systems

Journal Article · Sun Jun 01 04:00:00 EDT 1980 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(80)90081-0· OSTI ID:6462330

Behbahany, F; Sheikhrezai, Z; Djalali, M; Salajegheh, S

The activities for thiophene-deuterium exchange and thiophene desulfurization were measured for ten alumina-supported 0.5-4.5% cobalt catalysts, four alumina-supported 2.6-9.2% molybdenum catalysts, six supported cobalt-molybdenum catalysts prepared by adding cobalt to Mo/Al/sub 2/O/sub 3/ or molybdenum to Co/Al/sub 2/O/sub 3/, and nine commercial cobalt-molybdenum desulfurization catalysts. The measurements included magnetic susceptibility, mass spectroscopic determination of deuterium distribution from pulsed reactions, and flow-reactor activity measurements. The results suggested that on the supported cobalt catalysts, desulfurization depended on a ratio of octahedral to tetrahedral cobalt(II) ions and was independent of cobalt(III); that on suported molybdenum, the deuterium exchange and desulfurization rates corresponded approximately; and that on the cobalt-molybdenum catalysts, the average deuteration and desulfurization corresponded approximately, thiophene adsorbed in a flat configuration, and the exchange pattern was consistent with a modified Komarewsky mechanism.

• Research Organization: National Iranian Oil Co.
• OSTI ID: 6462330
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 63:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400303 -- Organic Chemistry-- Isotope Exchange & Isotope Separation-- (-1987)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COBALT
COMPARATIVE EVALUATIONS
DATA
DESULFURIZATION
DEUTERIUM
ELEMENTS
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
HYDROGEN ISOTOPES
INFORMATION
ISOTOPES
ISOTOPIC EXCHANGE
KINETICS
LIGHT NUCLEI
METALS
MOLYBDENUM
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
STABLE ISOTOPES
STRUCTURAL CHEMICAL ANALYSIS
THIOPHENE
TRANSITION ELEMENTS