| abstract |
Methods for producing synthetic hydrotalcite having a purity level of 99 percent or greater and an average particle size of less than 2 microns. According to one embodiment, a source of magnesium, a carbonate source and a source of aluminum are combined and reacted together under hydrothermal conditions. According to another embodiment in which the resulting product has an average particle size of less that 1 micron, a source of magnesium and a carbonate source are reacted together to form a hydromagnesite which is then reacted with a source of aluminum under hydrothermal conditions. |