Dewaxing catalysts and processes using the same
AssigneeExxonMobil Technology and Engineering Company
InventorsWilliam J. Knaeble, Scott J. Weigel, Preeti Kamakoti
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Abstract
Provided herein are catalysts for dewaxing of a feedstock, the catalyst comprising between about 40 wt. % and about 99.9 wt. % zeolite, between about 0 wt. % and about 40 wt. % binder and at least about 0.1 wt. % noble metal, as well as catalyst systems, methods and products produced using the catalysts. The zeolite having a crystal comprising a largest included sphere less than or equal to about 7.5 angstroms, a largest diffusing sphere greater than or equal to about 5.0 angstroms, and a silica to alumina ratio greater than or equal to about 100:1. The catalyst having a temperature-programmed ammonia desorption (“TPAD”) of less than about 0.25 mmol/g.
Claims22
A catalyst useful for dewaxing of a feedstock comprising:
- between about 40 wt. % and about 99.9 wt. % zeolite, wherein the zeolite comprises a crystal having a largest included sphere less than or equal to about 7.5 angstroms, a largest diffusing sphere greater than or equal to about 5.0 angstroms, and a silica to alumina ratio greater than or equal to about 100:1;
- between about 0 wt. % and about 60 wt. % binder, wherein the binder is selected from alumina, silica, titania or a mixture thereof;
- and
- greater than or equal to about 0.1 wt. % noble metal, wherein the catalyst has a TPAD of less than or equal to about 0.25 mmol/g, and wherein a metal to acid molar ratio is greater than 0.1.
Dependencies are inferred from the claim text.