Effect of the pore size distribution on the activities of alumina supported Co-Mo catalysts in the hydrotreatment of boscan crude
The effects of pore size and distribution on the activity of Co-Mo/Al/sub 2/O/sub 3/ catalysts in the hydrotreatment of asphaltenes have been studied using testing methodology designed to provide initial activities for the catalysis of the critical reactions in the process, hydrodesulfurization (HDS), hydrodemineralization (HDM) (V,NI) and asphaltene conversion to resins and oils (HDA) suitable for subsequent use as refining feedstocks. Nine monomodal (micropores) and seven bimodal (micro- and macropores) were tested. Maximum HDS occurs with mono- and bimodal catalysts having an average pore diameter of 100 A/sup 0/. Maximum HDA and HDM activity appears at a pore diameter between 150 and 200 A/sup 0/ and increases with increasing macroporosity, macropores allowing more efficient access of the large asphaltene molecular units to active sites. Overall catalytic efficiency is dependent upon but HDS and asphaltene hydrogenation rates. Variation of pore structures allowed reaction selectivities to be varied and provided control a asphaltene product (resins, oils) composition.
- Research Organization:
- Institut Francais du Petrole, Rueil-Malmaison, France
- OSTI ID:
- 6381527
- Report Number(s):
- CONF-830303-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 28:3; Conference: 185. American Chemical Society national meeting, Seattle, WA, USA, 20 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
04 OIL SHALES AND TAR SANDS
ASPHALTENES
DEMETALLIZATION
DEPOLYMERIZATION
DESULFURIZATION
BITUMENS
COBALT OXIDES
ACTIVATION ENERGY
CATALYTIC EFFECTS
DEACTIVATION
MICROSTRUCTURE
POROSITY
MOLYBDENUM OXIDES
PETROLEUM
ALUMINIUM OXIDES
CATALYST SUPPORTS
COMPARATIVE EVALUATIONS
HYDROGENATION
OPTIMIZATION
SIZE
ALUMINIUM COMPOUNDS
ASPHALTS
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT COMPOUNDS
CRYSTAL STRUCTURE
DECOMPOSITION
ENERGY
ENERGY SOURCES
FOSSIL FUELS
FUELS
MOLYBDENUM COMPOUNDS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SEPARATION PROCESSES
TAR
TRANSITION ELEMENT COMPOUNDS
020400* - Petroleum- Processing
040403 - Oil Shales & Tar Sands- Refining