Fouling of a platinum-rhenium reforming catalyst using model reforming reactions. [Effects of pretreatment with sulfide]

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · J. Catal.; (United States)

OSTI ID:6400449

Jossens, L W; Petersen, E E

The function of Re in the stabilization of a commercial platinum reforming catalyst was investigated by determining and then comparing the fouling characteristics of two model reforming reactions catalyzed by bifunctional Pt and Pt-Re catalysts. The methylcyclohexane (MCH) dehydrogenation reaction was used to probe for changes in the metallic function and the methylcyclopentane (MCP) dehydroisomerization reaction was used to determine variations in the acidic function. Both sulfided and unsulfided catalysts were investigated. Presulfiding either a Pt or Pt-Re catalyst altered significantly the observed reaction rates and deactivation characteristics of the metallic function. The addition of Re to a Pt reforming catalyst greatly reduced the rate of those structure-sensitive secondary reactions catalyzed by the metallic function: toluene dealkylation, MCP ring opening, and long-term MCH fouling. The addition of Re, however, did not affect the structure-insensitive MCH reaction or the initial MCP fouling rate; also, little or no affect was noted in the MCP fouling characteristics. The results presented suggest that there is a metal-metal interaction between Pt and Re.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 6400449
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 76:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
04 OIL SHALES AND TAR SANDS
040403 -- Oil Shales & Tar Sands-- Refining
ALKANES
CATALYSIS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CYCLOALKANES
DATA
DEHYDROGENATION
ELEMENTS
EXPERIMENTAL DATA
FOULING
HYDROCARBONS
INFORMATION
ISOMERIZATION
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
PLATINUM
PLATINUM METALS
REFORMER PROCESSES
RHENIUM
SULFIDATION
SYNTHESIS
TRANSITION ELEMENTS