Process for dewaxing with mordenite
AssigneeTexaco Inc.
InventorPaul H. Lewis
Life of this patent
Estimating the term…
Abstract
Catalytic dewaxing is effected with reduced coking by use of catalyst containing 0.5 w %-2.5 w % platinum-palladium group metal on hydrogen mordenite, the catalyst having been calcined at 1200.degree. F.-1600.degree. F. prior to use whereby it acquires activated sites (not present in mordenite products calcined at lower temperature) which are retained under anhydrous conditions.
Claims11
The method which comprises
- loading a hydrogen mordenite having a silica-to-alumina mole ratio of 10-50:1, with a metal of the platinum-palladium group thereby forming a loaded hydrogen mordenite;
- calcining said loaded hydrogen mordenite at 1300.degree. F.-1500.degree. F., after the catalyst has been exposed to water for the last time, thereby forming a calcined loaded hydrogen mordenite containing activated sites;
- and
- recovering said calcined loaded hydrogen mordenite containing activated sites.
The method which comprises loading a hydrogen mordenite having a silica-to-alumina mole ratio of 10-20:1, with 0.5 w %-2.5 w % palladium thereby forming a palladium-on-hydrogen mordenite;
- calcining said loaded palladium-on-hydrogen mordenite at 1300.degree. F.-1500.degree. F., after the catalyst has been exposed to water for the last time, thereby forming a calcined palladium-on-hydrogen mordenite containing activated sites;
- and;
- recovering said calcined palladium-on-hydrogen mordenite containing activated sites.
The method which comprises
- calcining a hydrogen mordenite having a silica-to-alumina mole ratio of 10-20:1 at 1200.degree. F.-1600.degree. F. thereby forming calcined hydrogen mordenite containing activated sites;
- loading said hydrogen mordenite having a silica-to-alumina mole ratio of 10-20:1, with a metal of the platinum-palladium group thereby forming a loaded hydrogen mordenite;
- calcining said loaded hydrogen mordenite at 1300.degree. F.-1500.degree. F., after the catalyst has been exposed to water for the last time, thereby forming calcined hydrogen mordenite containing activated sites;
- and
- recovering said calcined hydrogen mordenite containing activated sites.
The method which comprises calcining a hydrogen mordenite having a silica-to-alumina mole ratio of 10-50:1 at 1300.degree. F.-1500.degree. F., after the catalyst has been exposed to water for the last time, thereby forming a calcined hydrogen mordenite containing activated sites;
- and
- recovering said calcined hydrogen mordenite containing activated sites.
A calcined hydrogen mordenite, having a silica-to-alumina ratio of 10-50:1 prepared by the process which comprises
- calcining a hydrogen mordenite having a silica-to-alumina mole ratio of 10-50:1, at 1300.degree. F.-1500.degree. F., after the catalyst has been exposed to water for the last time, thereby forming a calcined hydrogen mordenite containing activated sites;
- and
- recovering said calcined hydrogen mordenite containing activated sites.
A calcined hydrogen mordenite catalyst, having a silica-to alumina ratio of 10-50:1 and bearing a metal of the platinum-palladium group, prepared by the process which comprises
- calcining said hydrogen mordenite at 1300.degree. F.-1500.degree. F., after the catalyst has been exposed to water for the last time, thereby forming a calcined hydrogen mordenite containing activated sites;
- and
- recovering said calcined hydrogen mordenite containing activated sites.
Dependencies are inferred from the claim text.