초록 ▼

An adsorbent is described based on an inorganic support material with exchangeable mono- and divalent cations, characterized by the fact that the specific surface of the support material is >100 m.sup.2 /g, its cation exchange capacity is>30 mg-equiv/100 g, its pore volume is>0.15 m/g, the pH value

An adsorbent is described based on an inorganic support material with exchangeable mono- and divalent cations, characterized by the fact that the specific surface of the support material is >100 m.sup.2 /g, its cation exchange capacity is>30 mg-equiv/100 g, its pore volume is>0.15 m/g, the pH value of an aqueous suspension of 8 g of support material in 100 mL of H.sub.2 O is<7.5 and that at least 60, preferably at least 70% of the exchangeable mono- and/or divalent cations are exchanged by cations acting as Lewis acids, preferably Al.sup.3 + cations.

대표청구항 ▼

[ We claim:] [1.] A process for the bleaching of fats and vegetable, animal or mineral oil comprisingpreparing an adsorbent based on an inorganic support material, wherein the support material has a specific surface area greater than about 100 m.sup.2 /g, a cation exchange capacity greater than 30 m

[ We claim:] [1.] A process for the bleaching of fats and vegetable, animal or mineral oil comprisingpreparing an adsorbent based on an inorganic support material, wherein the support material has a specific surface area greater than about 100 m.sup.2 /g, a cation exchange capacity greater than 30 meq/100 g, a pore volume greater than about 0.15 ml/g, and a pH value of an aqueous suspension of 8 grams of the support material in 100 ml of H.sub.2 O less than about 7.5,treating the support material with a molar excess of Lewis acid cations wherein the Lewis acid cations contain about twice the cation exchange capacity of the support material,removing excess salt solution from the treated support material to produce a residue, washing and drying the residue,contacting the fat or oil with the washed and dried residue, andseparating the residue from the fat or oil.