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US 5,180,864 AGranted
Process for oligomerizing olefins using an aluminum nitrate-treated acidic clay
AssigneeTexaco Chemical Company
InventorsJohn R. Sanderson, John F. Knifton
Life of this patent
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Abstract
An improved process is disclosed for preparing synthetic lubricant base stocks. Synthetic lubricant base stocks are prepared in good yield by oligomerizing linear olefins using certain acidic calcium montmorillonite clay catalysts which have aluminum nitrate deposited thereon.
Claims23
A process for the preparation of oligomers, comprising the following steps:
- (a) depositing a Lewis Acid, selected from the group consisting of aluminum nitrate, zinc chloride, and nickel chloride, on an acidic calcium montmorillonite clay having a moisture content ranging up to about 20 wt.%, a residual acidity in the range of about 3 to about 30 mg KOH/g and a surface area of about 300 M.sup.2 /g or greater, to provide a clay catalyst having a quantity of said Lewis Acid deposited thereon of at least about .01 wt.% ;
- and
- (b) contacting a linear olefin containing from 10 to 24 carbon atoms with a catalytically effective amount of the Lewis Acid-treated clay of step (a).
A process for the preparation of oligomers, comprising the following steps:
- (a) depositing aluminum nitrate on an acidic calcium montmorillonite clay having a moisture content ranging up to about 20 wt.%, a residual acidity in the range of about 3 to about 30 mg KOH/g, and a surface area of about 300 M.sup.2 /g or greater, to provide a clay catalyst having a quantity of aluminum nitrate deposited thereon of from about 0.01 to about 10 wt.%;
- and
- (b) contacting a linear olefin containing from 10 to 24 carbon atoms with a catalytically effective amount of the aluminum nitrate-treated clay of step (a).
A process for the preparation of oligomers, comprising the following steps:
- (a) depositing aluminum nitrate on an acidic calcium montmorillonite clay having a moisture content ranging up to about 20 wt.%, a residual acidity in the range of about 3 to about 30 mg KOH/g, and a surface area of about 300 M.sup.2 /g or greater, to provide a clay catalyst having a quantity of aluminum nitrate deposited thereon of from about 0.01 to about 10 wt.%;
- and
- (b) heat-treating the aluminum nitrate-treated clay of step (a) to a moisture content of about 1 wt.% or less;
- and
- (c) contacting a linear olefin containing from 10 to 24 carbon atoms with a catalytically effective amount of the clay resulting from step (b).
2 more elements
A synthetic lubricant component, made by a process comprising the following steps:
- (a) depositing aluminum nitrate on an acidic calcium montmorillonite clay having a moisture content ranging up to about 20 wt.%, a residual acidity in the range of about 3 to about 30 mg KOH/g, and a surface area of about 300 M.sup.2 /g or greater, to provide a clay catalyst having a quantity of aluminum nitrate deposited thereon of from about 0.01 to about 10 wt.%;
- (b) contacting a linear olefin containing from 10 to 24 carbon atoms with a catalytically effective amount of the aluminum nitrate treated clay of step (a);
- (c) separating out any remaining un-oligomerized olefin;
- and
- (d) hydrogenating the oligomer fraction resulting from
- step, (c) to produce a synthetic lubricant component.
3 more elements
Dependencies are inferred from the claim text.