| 摘要 |
A sol-gel process for producing dry porous metal oxide monoliths, e.g., sili ca glass monoliths, in which the successive process steps of gelling, aging and drying all occur within a mold formed of a porous non-organic-polymer material, e.g., graphite. The mold is inert to the gel solution and has sufficient strength to withstand the temperatures and pressures encountered during the process. The mold and gel thereby can remain within a sealed autoclave during these process steps, and mechanical handling of the mold an d the gel are minimized. This substantially enhances the process' efficiency. Alternatively, the mold can have a non-porous inner skin to enhance ease of cleaning of the mold, and of removal of the gel. |
