| http://www.w3.org/ns/prov#value | - Further, capable of being used as well is a compound prepared by a sol-gel method in which alkoxide such as aluminum isopropoxide is dissolved in alcohol such as 2-propanol and in which inorganic acid such as hydrochloric acid is added thereto as a catalyst for hydrolysis to prepare an alumina gel and it is dried and calcined.
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