Production of rhenium-containing reforming catalysts

Patent · Tue Jan 18 04:00:00 EST 1983

OSTI ID:6435074

Baird, W C; Mauldin, C H

A rhenium-containing catalyst, particularly one comprising platinum and rhenium, composited with a porous inorganic support material, especially alumina, is found to be more selective in hydrocarbon conversion reactions, particularly reforming (hydroforming) when pretreated in a sequence which includes the steps of oxidation, dry hydrogen reduction, and sulfiding. In all embodiments, the hydrogen reduction step is conducted at conditions sufficient to remove product water from the catalyst as it is produced until the catalyst becomes dry, or desiccated, and to continue such treatment until the amount of water contained in the exit gas is less than about 1000 ppm, preferably less than about 500 ppm. In a preferred embodiment, the catalyst is desiccated by an initial high temperature oxidation treat to activate the porous inorganic oxide base, or alumina, and then the hydrogen reduction step is performed at a lower temperature than that employed to effect the oxidation.

• Assignee: Exxon Research and Engineering Co
• Patent Number(s): US 4369129
• OSTI ID: 6435074
• 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
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYSTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL REACTIONS
DRYING
ELEMENTS
HYDROCARBONS
METALS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
PRODUCTION
REDUCTION
REFORMER PROCESSES
RHENIUM
SULFIDATION
TRANSITION ELEMENTS