Reactivating catalysts containing noble metals on molecular siev

Details Reactivating catalysts containing noble metals on molecular siev Reactivating catalysts containing noble metals on molecular siev

1989-03-15

1990-05-29

Pal, Asok

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Gas or vapor treating

502 37, B01J 2938, B01J 2394, B01J 3842

Patent

active

049295764

ABSTRACT:
There is provided a process for redispersing agglomerated noble metals such as platinum over the surface of certain tetrahedral crystalline oxides containing oxides of aluminum and phosphorus. Examples of such crystalline oxides include aluminophosphate (i.e. AlPO.sub.4 s), silicoaluminophosphates (i.e. SAPOs), ELAPSOs, MeAPOs, FeAPOs, TiAPOs and FCAPOs. The agglomerated noble metals may be redispersed by containing the supported noble metal with a suitable treating agent such as a stream of gas comprising molecular chlorine.

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WO86/03139, Jun. 5, 1986, U.S. translation.

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