MANUFACTURE METHOD OF POROUS SILICON OXIDE POWDER

摘要

PROBLEM TO BE SOLVED: To provide a manufacture method of a porous silicon oxide powder that has high activity, excels in handling nature, and for this reason, that can be used for the application usefully. SOLUTION: The manufacture method of the porous silicon oxide powder comprises: heating a mixed raw material powder at least including a silicon dioxide powder at 1,100-1,600°C of a temperature range under inert gas or vacuum pressure; generating silicon oxide gas; and making the silicon oxide gas deposit on a cooled base body surface, wherein the temperature on the base body surface is 100-400°C, the concentration of the silicon oxide gas vapor is 0.5-15g/m3, the pore mean diameter is 0.5-20 nm, the pore volume is 0.005-0.2 cm3/g, and the BET specific surface area is 5-300 m2/g. COPYRIGHT: (C)2007,JPO&INPIT