Start-up with ruthenium catalysts

Patent · Tue Mar 03 04:00:00 EST 1987

OSTI ID:6731752

Mauldin, C H

This patent describes a process for the conversion of synthesis gas to hydrocarbons by contacting at reaction conditions a feed characterized as an admixture of carbon monoxide and hydrogen with a bed of particulate ruthenium catalyst constituted of a catalytically active amount of ruthenium composited with titania, or a titania-containing support. The improvement is described comprising contacting and pretreating the catalyst, prior to initiating the conversion reaction, with an admixture of steam and a carrier gas or an admixture of steam and hydrogen at temperatures ranging from about 200/sup 0/C. to about 550/sup 0/C. It is sufficient to mildly agglomerate and ruthenium and form on the particles of catalyst larger agglomerates of ruthenium of average crystallite size from about 15 A to about 25 A approximating that obtained on completion of the startup portion of a synthesis gas operating run.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4647592
• OSTI ID: 6731752
• Country of Publication: United States
• Language: English

Related Subjects

090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
AGGLOMERATION
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CRYSTAL STRUCTURE
DISPERSIONS
ELEMENTS
FLUIDS
GASES
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
KINETICS
METALS
MIXTURES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PLATINUM METALS
REACTION KINETICS
RUTHENIUM
STEAM
SYNTHESIS
SYNTHESIS GAS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS