PREPARATION OF SUSPENSIONS

摘要

A method for preparing a suspension of LDH particles comprising the steps of: preparing LDH precipitates by coprecipitation to form a mixture of LDH precipitates and solution; separating the LDH precipitates from the solution; washing the LDH precipitates to remove residual ions; mixing the LDH precipitates with water; and subjecting the mixture of LDH particles and water to a hydrothermal treatment step by heating to a temperature of from greater than 80° C. to 150° C. for a period of about 1 hour to about 144 hours to form a well dispersed suspension of LDH particles in water, wherein said LDH particles in suspension comprise platelets having a maximum particle dimension of up to 400 nm.

主权项

1. A method for preparing a suspension of LDH particles comprising the steps of:
a) preparing LDH precipitates by coprecipitation to form a mixture of LDH precipitates and solution; b) separating the LDH precipitates from the solution; c) washing the LDH precipitates to remove residual ions; d) mixing the LDH precipitates with water; and e) subjecting the mixture of LDH particles and water from step (d) to a hydrothermal treatment step by heating to a temperature of from greater than 80° C. to 150° C. for a period of about 1 hour to about 144 hours to form a well dispersed suspension of LDH particles in water wherein said LDH particles in suspension comprise platelets having a maximum particle dimension of up to 400 nm.