Low-cost poly-alpha-olefin base oil and preparation method thereof
A base oil, low-cost technology, applied in the treatment of hydrocarbon oils, base materials, petroleum industry, etc., can solve the problems of limited source of 1-decene raw materials and high cost of PAO base oil, and achieve high immobilization reaction efficiency and reduce Effects of environmental pollution and equipment corrosion, low cost of raw materials and products
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Embodiment 1
[0044] A preparation method of a low-cost polyalpha-olefin base oil is as follows.
[0045] (1) The nickel salt solution is impregnated and loaded
[0046] γ-alumina (Al 2 O 3 ) The carrier was immersed in a 1.0M nickel chloride solution for 12 hours, washed and dried under nitrogen protection, and calcined at a high temperature of 600 ° C for 12 hours to obtain a supported nickel (II) / γ-Al 2 O 3 .
[0047] (2) Solution immobilization of organoaluminum compounds
[0048] Ni(II) / γ-Al supported at 15 g under nitrogen protection 2 O 3 150ml of n-hexane solution of 5ω% dichloroethylaluminum was added, kept at reflux temperature for 6 hours, the solid support obtained by filtration was washed with n-hexane, and γ-alumina (γ-Al) was obtained after vacuum drying. 2 O 3 ) Supported Nickel(II)-Organoaluminum Supported Catalyst.
[0049] The chlorine content of the solid-supported catalyst was determined by Volhard titration, and the measured chlorine content was 17.1ω%.
[00...
Embodiment 2
[0057] A preparation method of a low-cost polyalpha-olefin base oil is as follows.
[0058] (1) The nickel salt solution is impregnated and loaded
[0059] The content of step (1) is the same as that of Example 1, and its difference is: the γ-alumina (Al 2 O 3 ) The carrier was immersed in a 0.75M nickel nitrate solution for 12 hours, washed and dried under nitrogen protection, and calcined at a high temperature of 600 ° C for 4 hours to obtain a supported nickel (II) / γ-Al 2 O 3 .
[0060] (2) Solution immobilization of organoaluminum compounds
[0061] The content of step (2) is the same as that of Example 1, except that it is kept at reflux temperature for 10 hours.
[0062] The chlorine content of the solid-supported catalyst was measured to be 18.2ω%, and the nickel content was 2.1ω%.
[0063] (3) Oligomerization to prepare olefin oligomers
[0064] The content of step (3) is the same as that in Example 1, except that: 150ml of 1-decene (1-decene concentration is 27...
Embodiment 3
[0070] A preparation method of a low-cost polyalpha-olefin base oil is as follows.
[0071] (1) Impregnating the nickel salt solution
[0072] The content of step (1) is the same as that of Example 1, except that the nickel chloride solution is 0.5M, and calcined at a high temperature at 400° C. for 6 hours to obtain supported nickel (II) / γ-Al 2 O 3 .
[0073] (2) Solution immobilization of organoaluminum compounds
[0074] The content of step (2) is the same as that of Example 1, except that the concentration of the n-hexane solution of dichloroethylaluminum is 10ω%.
[0075] The chlorine content of the solid-supported catalyst was measured to be 25.0ω%, and the nickel content was 1.7ω%.
[0076] (3) Oligomerization to prepare olefin oligomers
[0077] The content of step (3) is the same as that of Example 1, except that: 1-octene 250ml (1-octene concentration is 38.5υ%.), 2.0 g tert-butyl chloride cocatalyst, hydrogen pressure 0.35MPa, isobutene pressure 0.6 MPa, the o...
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