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Priority to TW93138123ApriorityCriticalpatent/TWI262896B/en
Publication of TW200619142ApublicationCriticalpatent/TW200619142A/en
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Publication of TWI262896BpublicationCriticalpatent/TWI262896B/en
The present invention discloses a process for preparing silica xerogel including 2-step acid-base catalyst procedures, a surface modification with trimethylchlorosilane, and a heat treatment at a high temperature. The 2-step acid-base catalyst procedures includes mixing tetraethoxysilane, isopropanol, water and acid to form a sol solution, and adding an aqueous solution of ammonium hydroxide to start gelation.
TW93138123A2004-12-092004-12-09Process for preparing porous silica xerogel
TWI262896B
(en)
Microencapsulation process for producing microcapsules containing a surface-modified particulate inorganic material in a cross-linked microcapsule wall.
Processes for preparing an aqueous bicarbonate solution, for carbon dioxide sequestration and for preparing activated silicate hydroxide mineral particles