Effect of composition and pretreatment on the activity of nickel/molybdenum-based hydrodesulfurization catalysts
Journal Article
·
· Ind. Eng. Chem., Prod. Res. Dev.; (United States)
The effect of composition and pretreatment on the activity of nickel/molybdenum-based hydrodesulfurization catalysts was studied by measuring the conversion of thiophene (a model reaction for coal liquid hydrodesulfurization processes) at 300/sup 0/-450/sup 0/C in a flow reactor. A 5% NiO/10% MoO/sub 3//(GAMMA)-Al/sub 2/O/sub 3/ catalyst showed high activity without any pretreatment. Prereduction of the catalysts in hydrogen at 300/sup 0/C increased their activities, which were highest for catalysts containing 3% NiO and 10-15% MoO/sub 3/, but catalyst pretreated in hydrogen at > 350/sup 0/C showed low activities. Catalyst pretreatment in pure hydrogen sulfide further improved the activity, which passed through a maximum for a 3% NiO/35% MoO/sub 3//Al/sub 2/O/sub 3/ catalyst presulfided at 400/sup 0/C. A reaction mechanism is proposed, in which the catalytic activity is related with the positive hole carrier density in the catalyst.
- Research Organization:
- Imp. Coll. Lond.
- OSTI ID:
- 6210801
- Journal Information:
- Ind. Eng. Chem., Prod. Res. Dev.; (United States), Journal Name: Ind. Eng. Chem., Prod. Res. Dev.; (United States) Vol. 18:4; ISSN IEPRA
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Journal Article
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Mon Sep 01 00:00:00 EDT 1980
· J. Catal.; (United States)
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OSTI ID:7048565
Effect of nickel on the acidity and hydrodesulfurization (HDS) activity of supported molybdate catalysts
Conference
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Mon Dec 31 23:00:00 EST 1979
· Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)
·
OSTI ID:6361236
Surface structure and catalytic activity of MoO/sub 3//Al/sub 2/O/sub 3/ catalysts in the hydrodesulfurization of thiophene studied by x-ray photoelectron spectroscopy
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Thu Jul 10 00:00:00 EDT 1980
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OSTI ID:5130331
Related Subjects
01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
CATALYSTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL LIQUIDS
DESULFURIZATION
ELEMENTS
FLUIDS
FUNCTIONAL MODELS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
KINETICS
LIQUIDS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NICKEL COMPOUNDS
NICKEL OXIDES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
QUANTITY RATIO
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
STRUCTURAL CHEMICAL ANALYSIS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
THIOPHENE
TRANSITION ELEMENT COMPOUNDS
USES
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
CATALYSTS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL LIQUIDS
DESULFURIZATION
ELEMENTS
FLUIDS
FUNCTIONAL MODELS
HETEROCYCLIC COMPOUNDS
HIGH TEMPERATURE
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
KINETICS
LIQUIDS
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
NICKEL COMPOUNDS
NICKEL OXIDES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
QUANTITY RATIO
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
STRUCTURAL CHEMICAL ANALYSIS
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
THIOPHENE
TRANSITION ELEMENT COMPOUNDS
USES