Structure of Co-Mo/UPSILON-Al/sub 7/O/sub 3/ catalysts and relationship to HDS and hydrogenation activity. [Hydrodesulfurization (HDS)]

Conference · Wed Sep 01 04:00:00 EDT 1982 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:5493948

Bennet, B A ^[1]; Chadwick, D; Jawahery, A R; Breysse, M; Vrinat, M

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1. Imperial Coll., London, England

From Mossbauer spectroscopy studies of catalysts of typical industrial compositions and activity measurements it was shown that catalysts containing the ''Co-Mo-S'' phase have relatively higher hydrodesulfurization (HDS) activities. It was also found that the use of Co in the first impregnation step favored the formation of Co/sub 9/S/sub 8/ (in addition to Co in alumina), while the reverse impregnation order produced mainly the ''Co-Mo-S'' phase. Avoiding Co/sub 3/O/sub 4/ formation in the oxide precursor was important for the formation of the ''Co-Mo-S'' phase and this was achieved by the impregnation of Mo before Co. There was also evidence that when Co was used in the second impregnation step, there was significant Mo, Co interaction. This interaction my produce a CoMo surface phase which is disordered and well dispersed and sulfides to the ''Co-Mo-S'' phase. (JMT)

• OSTI ID: 5493948
• Report Number(s): CONF-820909-Vol.1
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 27:3
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PROPERTIES
CHEMICAL REACTIONS
COBALT
COBALT COMPOUNDS
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
METALS
MOLYBDENUM
MOLYBDENUM COMPOUNDS
PETROLEUM
PHASE STUDIES
SPECTROSCOPY
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS