Catalyst and process for hydrocarbon aromatization
AssigneeAmoco Corporation
InventorsGilbert Fernand Alphonse Froment, Wilfried Jozef Hippolyte Dehertog
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Abstract
A catalyst and process is described for aromatizing one or more C.sub.3 to C.sub.6 saturated hydrocarbon to a product low in methane and essentially containing ethane or ethane and propane and aromatic hydrocarbons. A partially sulfided, Pt/Re loaded, essentially hydrogen-form, crystalline aluminosilicate molecular sieve exhibiting the MFI structure and having a Si/Al ratio between about 40 and about 600 is shown to have an excellent catalyst lifetime and favor low methane production, high conversion and high selectivity to benzene, toluene and xylenes and ethane or ethane and propane.
Claims20
A one-stage process to convert C.sub.3 to C.sub.6 alkanes to a low methane-containing hydrocarbon product rich in aromatics comprising:
- contacting a feed comprising at least one C.sub.3 to C.sub.6 alkane under conversion conditions, without addition of hydrogen,
- with a catalyst component consisting essentially of a hydrogen-form, Pt/Re-loaded crystalline aluminosilicate molecular sieve, having the MFI crystal structure and a Si/Al ratio between about 40 to about 600, which has been partially sulfided.
A one-stage process to convert C.sub.3 to C.sub.6 alkanes to a low-methane containing hydrocarbon product rich in aromatics comprising:
- contacting a hydrocarbon feed comprising at least one C.sub.3 to C.sub.6 alkane under conversion conditions, without addition of hydrogen,
- with a catalyst component consisting essentially of a hydrogen-form, crystalline aluminosilicate molecular sieve having the MFI crystal structure and a Si/Al ratio between about 40 to about 600,
- on which has been exchanged platinum ions and which has been impregnated with a rhenium compound such that the catalyst composition contains about 0.1 to about 0.5 wt. % platinum and rhenium, and which has been partially sulfided.
Dependencies are inferred from the claim text.