Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And group iii or rare earth metal or lanthanide containing
Patent
1998-02-03
1999-09-07
Lewis, Michael
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
And group iii or rare earth metal or lanthanide containing
502 65, 502 66, 502 74, 423DIG23, B01J 2100
Patent
active
059487194
ABSTRACT:
Ferrierite is ion exchanged with trivalent rare earth metals by a hydrothermal ion exchange method. The ion exchange is carried out by contacting ferrierite, in which its cation exchange positions are occupied by hydrogen or a hydrogen precursor, with an aqueous solution of one or more rare earth metal cations at a temperature above the boiling point of the solution. After the ion exchange, preferably at least 10% and more preferably at least 15% of the ferrierite cation exchange capacity is occupied by a trivalent rare earth metal cation. When combined with a catalytic metal, such as a Group VIII noble metal, the trivalent rare earth metal ion exchanged ferrierite is useful as a dewaxing catalyst having good selectivity for lubricating oil fractions, particularly when dewaxing a Fischer-Tropsch wax hydroisomerate.
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Cao Guang
Cook Bruce R.
Ernst Richard H.
Johnson Jack W.
McEvoy Rich A.
Dunn Jr. Thomas G.
Exxon Research and Engineering Co.
Lewis Michael
Simon Jay
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