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US 7,582,320 B2Granted
Acid activated montmorillonite based filtration aid
AssigneeBASF Catalysts LLC
InventorsMichael J. Breen, Marc Siegel
Life of this patent
Estimating the term…
Abstract
Disclosed are bleaching materials for processing oils, particularly edible oils, containing an acid activated clay having a specifically defined particle size distribution. Also disclosed are methods of making the bleaching materials, and systems and methods for purifying oils using the acid activated clay having the specifically defined particle size distribution.
Claims22
A bleaching material for processing oils, comprising:
- an acid activated clay wherein at least 90% by volume of the acid activated clay has a particle size range of about 15 μm or more and about 325 μm or less;
- more than 50% by volume of the acid activated clay has a particle size range of about 50 μm or more and about 150 μm or less;
- and at least 30% by volume of the acid activated clay has a particle size range of about 100 μm or more;
- wherein the acid activated clay has a surface area from about 300 m2/g to about 400 m2/g.
1 more element
A method of making a bleaching material, comprising:
- contacting clay with an acid;
- removing small and large particles to provide a bleaching material comprising an acid activated clay wherein at least 90% by volume of the acid activated clay has a particle size range of about 15 μm or more and about 325 μm or less;
- more than 50% by volume of the acid activated clay has a particle size range of about 50 μm or more and about 150 μm or less;
- and at least 30% by volume of the acid activated clay has a particle size range of about 100 μm or more;
- wherein the acid activated clay has a surface area from about 300 m2/g to about 400 m2/g.
2 more elements
A method of making a bleaching material, comprising:
- contacting clay with an acid;
- and
- removing small and large particles to provide a bleaching material comprising an acid activated clay wherein more than 30% by volume of the acid activated clay has a particle size of about 100 μm or more;
- wherein the acid activated clay has a surface area from about 300 m2/g to about 400 m2/g.
1 more element
A bleaching material for processing oils, comprising:
- an acid activated clay wherein more than 30% by volume of the acid activated clay has a particle size of about 100 μm or more;
- wherein the acid activated clay has a surface area from about 300 m2/g to about 400 m2/g.
Dependencies are inferred from the claim text.