发明名称 |
METHODS FOR PRODUCTION OF TITANIUM OXIDE PARTICLES, AND PARTICLES AND PREPARATIONS PRODUCED THEREBY |
摘要 |
<p>The invention provides a method for the formation of small-size titanium oxide particles, comprising the steps of a) preparing a starting aqueous solution comprising at least one of titanic ions and complexes thereof, at a concentration of at least 0.1 % w/w titanium; b) maintaining the solution at a temperature lower than 70°C for a retention time in which hydrolysis takes place, the extent of the hydrolysis being sufficient to produce O.immol protons per mmol of titanium present in solution, wherein the time does not exceed 14 days, to form a system containing a retained solution; and c) adjusting the conditions in the system by at least one of the steps of: i) heating the retained solution to elevate the temperature thereof by at least 1 °C; ii) changing the pH of the retained solution by at least 0.1 units; and iii) diluting the retained solution by at least 20% whereby there are formed particles, wherein the majority of the particles formed are between about 2nm and about 500nm in size.</p> |
申请公布号 |
WO2007074436(A1) |
申请公布日期 |
2007.07.05 |
申请号 |
WO2006IL01468 |
申请日期 |
2006.12.21 |
申请人 |
JOMA INTERNATIONAL AS;VITNER, ASHER;EYAL, AHARON |
发明人 |
VITNER, ASHER;EYAL, AHARON |
分类号 |
C01G23/053;C01G23/08 |
主分类号 |
C01G23/053 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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