Catalytic dewaxing process for producing lubricating oils

Details Catalytic dewaxing process for producing lubricating oils Catalytic dewaxing process for producing lubricating oils

C - Chemistry, Metallurgy

10

G

196/54

C10G 45/12 (2006.01) C10G 45/64 (2006.01)

Patent

CA 2033334

F-5180 CATALYTIC DEWAXING PROCESS FOR PRODUCING LUBRICATING OILS ABSTRACT Lubricant oils of low pour point and improved oxidation stability are produced by catalytically dewaxing a lube feedstock over a zeolite dewaxing catalyst such as ZSM-5 in the hydrogen or decationized form and without a metal hydrogenation component. The use of these catalysts enables products of excellent oxidative stability to be obtained and reduces the catalyst aging rate in the first and subsequent dewaxing cycles to values below 5°F (2.8°C)/day. The duration of the dewaxing cycles may be extended, particularly in the second and subsequent cycles after hydrogen reactivation.

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