Hydrotalcite derivatives comprising nickel and cobalt and a leaf morphology, and method of production.

摘要

A hydrotalcite synthetic material containing nickel (or cobalt), with laminar morphology, and a relationship between the width and film thickness of at least 50, of the formula M {SUB, 1-X} AL {SUB, X} (OH) {SUB, SUB 2} .XA.MH {2} O, where M is Ni or Co, A is an anion monocarboxylic FORM RCOO-, where R is C {SUB, SUB {N} H , 2N + 1}, n = 0-5, YXYM are numbers that satisfy the following conditions: 0.2 = X = 0.4, 0.0 = M = 4. It is prepared from a synthesis mixture having a molar RATIO Ni or Co (divalent cation) to aluminum (CATION trivalent) between 1: 1 and 10: 1, a mole ratio anion monocarboxylic A ALUMINUM (CATION trivalent) BETWEEN 0.1 : 1 and 1.2: 1 and optionally other additives anions. The process comprises reacting a mixture comprising NI (or cobalt), aluminum cations, and anions monocarboxylic IN A slurry, to less 40 CY a pH of at least 7 TEMPERATURE AL.