Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And additional al or si containing component
Reexamination Certificate
2005-11-29
2005-11-29
Johnson, Christina (Department: 1725)
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
And additional al or si containing component
C502S064000, C502S071000, C502S077000, C423S700000, C423S710000, C423S711000
Reexamination Certificate
active
06969692
ABSTRACT:
A process for the preparation of a metal-doped pentasil-type zeolite comprising the steps of:a) preparing an aqueous precursor mixture comprising a silicon source and an aluminum source, at least one of these sources being doped with a rare earth metal or a transition metal of Groups Vb–VIIIb, Ib, or IIb of the Periodic System, andb) thermally treating the precursor mixture to form a metal-doped pentasil-type zeolite.With this process, metal-doped pentasil-type zeolites can be prepared while the risk of precipitation of the dopant as a separate phase is minimized.
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Brady Mike
Laheij Erik Jeroen
O'Connor Paul
Stamires Dennis
Albemarle Netherlands B.V.
Johnson Christina
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