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为探究活性氧化铝在室温下老化规律，我校化学教研组对市售活性氧化铝和实验室新制氧化铝老化进行对比实验．我们用氯化铝和足量稀氨水反应制取AI（OH）3沉淀，后用蒸馏水冲洗滤渣，酒精灯加热制得蓬松白色晶体AI。O。即用Zmol／L盐酸和Zmol／LNaOH溶液分别与新制的AI。O。反应
In order to explore the law of aging of activated alumina at room temperature, the chemistry teaching and research group of our school conducted a comparative experiment on the commercial activated alumina and the aging of the new laboratory alumina. We used aluminum chloride and a sufficient amount of dilute ammonia to react to produce AI(OH)3 precipitate. After washing the filter residue with distilled water, the fluffy white crystal AI was prepared by heating with an alcohol lamp. O. That is, Zol/L hydrochloric acid and Zmol/L NaOH solution were used separately with freshly prepared AI. O. reaction