Stable, high-yield reforming catalyst

Details Stable, high-yield reforming catalyst Stable, high-yield reforming catalyst

1994-02-14

1995-01-24

Sneed, Helen M. S.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Reforming

585419, 585482, C10G 35095, C07C 500

Patent

active

053840380

ABSTRACT:
A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a bed of catalyst particles containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst particles and a nonacidic large-pore molecular sieve. The use of this bed of catalyst particles results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.

REFERENCES:
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patent: 3897368 (1975-07-01), Ohara et al.
patent: 4104320 (1978-08-01), Bernard et al.
patent: 4677094 (1987-06-01), Moser et al.
patent: 4786625 (1988-11-01), Imai et al.
patent: 4914068 (1990-04-01), Cross et al.
patent: 4992158 (1991-02-01), Schweizer

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