Reforming with multimetallic catalysts

Patent · Tue Oct 16 04:00:00 EDT 1979

OSTI ID:6176322

Eberly, Jr, P E

A process for desensitizing a hypersensitive, high activity reforming catalyst for suppression of hydrogenolysis which is particularly acute during the early portion of the period that the catalyst is placed on stream, i.e., at the startup of a reactor. The catalyst is constituted of a composite which includes a Group VIII noble metal hydrogenation-dehydrogenation component, notably platinum, iridium or rhenium, and a sulfurous acid or sulfuric acid component. Hydrogenolysis is suppressed by incorporating within such reforming catalyst at the time of its preparation a sulfurous acid or sulfuric acid component. In another of its aspects the present invention embodies a reforming catalyst or catalyst composite comprising a refractory or inorganic oxide support material, particularly alumina, a Group VIII noble metal hydrogenation-dehydrogenation component, notably platinum, to which iridium or rhenium, and a sulfurous acid or sulfuric acid component have been added to promote the activity and selectivity of the catalysts, and said catalyst is prepared by a method wherein the sulfurous acid or sulfuric acid component is introduced into and deposited throughout said support. Suitably, the reforming catalyst, or composite also contains a halogen component, particularly chlorine and preferably the sulfurous acid or sulfuric acid component is introduced into the support, or catalyst, by impregnating with a liquid solution which contains one or both of these compounds. 4 tables.

• Assignee: Exxon Research and Engineering Co.
• Patent Number(s): US 4171259
• OSTI ID: 6176322
• 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
CHEMICAL REACTIONS
EFFICIENCY
ELEMENTS
HYDROGEN COMPOUNDS
HYDROGENATION
INORGANIC ACIDS
IRIDIUM
METALS
PLATINUM
PLATINUM METALS
REFORMER PROCESSES
REFRACTORY METALS
RHENIUM
SULFURIC ACID
SULFUROUS ACID
TRANSITION ELEMENTS