Reforming using erionite catalysts

Journal Article · Sun Aug 01 00:00:00 EDT 1993 · Hydrocarbon Processing; (United States)

OSTI ID:5698647

Liers, J; Meusinger, J; Moesch, A ^[1]; Reschetilowski, W ^[2]

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1. Univ. of Leipzig (Germany)
2. Karl Winnacker Inst. of DECHEMA, Frankfurt (Germany)

The advantage of reforming on erionite catalysts is a product with high octane numbers and low amounts of aromatics. This advantage seems to be slight at reaction pressures lower than 25 bar. But it is possible to compensate for the influence of pressure by varying the erionite content within the catalyst and the reaction temperature. When reforming on Pt/Al[sub 2]O[sub 3] catalysts, the following reactions take place: dehydrocyclization of paraffins to naphthenes, dehydrogenation of naphthenes to aromatics, isomerication of normal paraffins remains in the product, lowering its octane number. By using a Ni/H-erionite catalyst, the octane rating can be increased by 3 to 7 numbers through selective hydrocracking of n-alkanes in the reformate. Erionite catalysts favor shape-selective hydrocracking of normal paraffins and the formation of cyclopentane derivatives lowering the content of aromatics during reforming reactions. Reducing the reaction pressure decreases hydrocracking activity and cyclopentane formation. These results can be interpreted in terms of thermodynamic restrictions and deactivation.

• OSTI ID: 5698647
• Journal Information: Hydrocarbon Processing; (United States), Journal Name: Hydrocarbon Processing; (United States) Vol. 72:8; ISSN HYPRAX; ISSN 0018-8190
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKANES
CATALYSTS
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
HYDROAROMATICS
HYDROCARBONS
HYDROCRACKING
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOMERIZATION
MATERIALS
MINERALS
ORGANIC COMPOUNDS
PYROLYSIS
REFORMER PROCESSES
SILICATE MINERALS
THERMOCHEMICAL PROCESSES
ZEOLITES