Comparison of the hydrogenating capacities of Pt. Re and Pt-Re/Al/sub 2/O/sub 3/ in n-hexane reforming
The introduction of rhenium as a second metal and its sulfidation increase the stability and selectivity of Pt Al/sub 2/O/sub 3/ catalyst for naphtha reforming. The addition of Re and S affects the metallic function of the catalyst but not the acidic one. One proposed cause of the improvement of the catalyst by addition of Re and S is higher resistance to deactivation by coking. Others stated that Pt-Re has a greater capacity than Pt to hydrogenate cyclopentadiene, one of the most important coke precursors. Others ascribed to Re the capacity to destroy by hydrogenolysis the coke precursors without necessity of an intimate contact between Pt and Re. Others stated that Re reduces the dehydrogenating capacity of Pt, thereby increasing the dehydrogenation of coke precursors and, in the case of methylcyclopentadiene reforming, decreasing its condensation-dehydrogenation to produce heavy aromatics and poly-ring coke. This paper presents information about the hydrogenation-dehydrogenation capacity of the metallic component of Pt/Al/sub 2/O/sub 3/ reforming catalyst, comparing the activity of Pt, Re and Pt-Re for hydrogenating their own coke and for recovering the activity of metallic-catalyzed reactions.
- Research Organization:
- Instituto de Investigaciones en Catalisis y Petroquimica (INCAPE), Santiago del Estero 2654 3000 Santa Fe
- OSTI ID:
- 6903423
- Report Number(s):
- CONF-860911-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Gen. Pap., Prepr.; (United States), Journal Name: Am. Chem. Soc., Div. Pet. Chem., Gen. Pap., Prepr.; (United States) Vol. 31:3; ISSN ACPGA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Role of Re and S in the Pt-Re-S/Al/sub 2/O/sub 3/ catalyst
Coking of Pt-Ir/Al sub 2 O sub 3 and Pt-Re/Al sub 2 O sub 3 catalysts in different pressures of cyclopentane
Related Subjects
020400* -- Petroleum-- Processing
ACTIVATION ENERGY
ALKENES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
CARBONIZATION
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COAL TAR OILS
COKE
COKING
CYCLOALKENES
CYCLOPENTADIENE
DEACTIVATION
DECOMPOSITION
DEHYDROGENATION
DIENES
DISTILLATES
ELEMENTS
ENERGY
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
HYDROGENATION
METALS
NAPHTHA
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PH VALUE
PLATINUM
PLATINUM METALS
POLYENES
REFORMER PROCESSES
RHENIUM
SULFUR
SYNTHESIS
TRANSITION ELEMENTS