How to make silica gel beads from silica?
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Silica gel beads can be produced using various methods. One approach involves utilizing industrial waste like Si-stoff and natural materials such as diatomite to create silica gels with controlled pore structures, suitable for diverse applications . Another method includes a technique where active silicic acid is mixed with an alkaline compound, purified, and then subjected to a series of resin treatments to obtain silica sol, which is further processed to form silica gel clay with high purity and stability . Additionally, mm-sized silica aerogel beads can be prepared through a fast gelation process, transforming silica sol beads into silica alcogel beads followed by supercritical drying, resulting in beads with a spherical shape and a porous network structure . These methods showcase different approaches to creating silica gel beads from silica, each offering unique advantages and characteristics.
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| The silica gel forming method involves preparing liquid-state silica gel, molding it in a mold, subjecting it to heat forming, and opening the mold to obtain finished silica gel products. | |
| To make silica gel beads from silica, mix active silicic acid with an alkaline compound, heat, cure, purify with resin and chelating agent, then react with a polymer modifier to obtain silica gel clay. | |
4 Citations | Silica gel beads are made by extruding silica sol through nozzles into an oil phase, transforming into alcogel beads, and then supercritically drying them to form millimeter-sized silica aerogel beads. |
| Silica gel beads can be made from silica by utilizing inexpensive feedstock like Si-stoff or diatomite, controlling deposition parameters to achieve varied pore structures for diverse applications. |
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