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Priority to TW94132735ApriorityCriticalpatent/TWI262822B/en
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Publication of TW200711729ApublicationCriticalpatent/TW200711729A/en
Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals
(AREA)
Materials For Medical Uses
(AREA)
Abstract
This invention relates to method for enabling alumina have high specific surface after treatment at high temperature, the method comprising preparing alumino-calcium compositions by coprecipitation technique; calcining the alumino-calcium compositions; immersing the alumino-calcium compositions in acid liquid for acid treatment; setting working temperature lower than the boiling point of the acid liquid, whereby alumina with high specific surface is obtained.
TW94132735A2005-09-222005-09-22Method for enabling alumina have high specific surface after treatment at high temperature
TWI262822B
(en)
ANTI-AGING AND / OR ANTI-FOLLETING COMPOSITION, METHOD FOR ITS PREPARATION, LIQUID MEANS TO REDUCE THE TEMPERATURE OF FREEZING ON ITS BASIS AND METHOD OF REMOVAL AND / OR PREVENTION OF FORMATION