초록 ▼

There is provided a method for making monovalent organic anion-intercalated hydrotalcite-like materials by first reacting a magnesium-containing powder and a transition alumina powder in a carboxylic acid-free, aqueous suspension to form a meixnerite intermediate. This intermediate is then contacted

There is provided a method for making monovalent organic anion-intercalated hydrotalcite-like materials by first reacting a magnesium-containing powder and a transition alumina powder in a carboxylic acid-free, aqueous suspension to form a meixnerite intermediate. This intermediate is then contacted with a monovalent organic anion to form a hydrotalcite-like material. The latter is then separated from the suspension. Representative materials include a stearate-, acetate- or benzoate-intercalated hydrotalcite-like material.

대표청구항 ▼

[ What is claimed is:] [1.] A method for making a layered double hydroxide with at least one monovalent organic anion intercalated therein, said layered double hydroxide having the formula: A.sub.1-x B.sub.x (OH).sub.2 C.sub.z.mH.sub.2 O, where A represents a divalent metal cation, B represents a tr

[ What is claimed is:] [1.] A method for making a layered double hydroxide with at least one monovalent organic anion intercalated therein, said layered double hydroxide having the formula: A.sub.1-x B.sub.x (OH).sub.2 C.sub.z.mH.sub.2 O, where A represents a divalent metal cation, B represents a trivalent metal cation, C represents a mono- to polyvalent anion, and x, z and m satisfy the following conditions: 0.09m>0.5, said method comprising:(a) reacting at least one divalent metal compound and at least one trivalent metal oxide powder in a carboxylic acid and carboxylate ion-free, aqueous suspension to form a double hydroxide intermediate containing said divalent metal and said trivalent metal;(b) after the double hydroxide intermediate has formed, contacting said double hydroxide intermediate with a monovalent organic anion to form said intercalated layered double hydroxide; and(c) separating said intercalated layered double hydroxide from the suspension. [39.] A method for making a layered double hydroxide with at least one monovalent organic anion intercalated therein, said method comprising:(a) reacting a meixnerite manufactured in a carboxylic acid and carboxylate ion-free environment with a monovalent organic anion to form an intercalated layered double hydroxide; and(b) separating said intercalated layered double hydroxide from the suspension.