Production and use of polysilicate particulate materials

Details Production and use of polysilicate particulate materials Production and use of polysilicate particulate materials

C - Chemistry, Metallurgy

01

B

C01B 33/26 (2006.01) D21H 17/63 (2006.01) D21H 21/14 (2006.01)

Patent

CA 2593061

A method of preparing a particulate material comprising the steps of adding silicic acid solution, optionally doped with aluminum, optionally added to a slurry of pre- existing nanoparticles at a neutral to slightly acidic pH of no more than seven, and at a temperature of about 20° to 30°C. This yields a polysilicate particulate dispersion. Then, the pH of the dispersion is raised to greater than seven, to stabilize/reinforce particles of the particulate dispersion. Optionally, the particles may be dried, and have increased porosity and surface area.

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