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CN102002120A 一种大孔容大比表面积特种硅胶载体的制备方法 无效 - 撤回

一种大孔容大比表面积特种硅胶载体的制备方法
摘要：
一种大孔容大比表面积特种硅胶载体的制备方法，其特征在于：工艺步骤包括：将工业硅酸钠，稀释；在初始温度20-40℃下滴加无机酸溶液，调节体系pH至2-4，升温至最终温度80-100℃，加入比表面控制剂；比表面控制剂选自乙二醇、乙酸乙酯，丙三醇，丙酮，三氯乙烷的一种或多种，保温2-4小时，进行水热反应；然后陈化1-2；洗涤；干燥；然后进行粒度分级，得到最终产品。
摘要（英）：

The invention relates to a method for preparing a special silica gel carrier with a large pore volume and a large specific surface area. The method is characterized by comprising the following process steps of: diluting industrial sodium silicate; adding inorganic acid solution dropwise at the initial temperature of between 20 and 40 DEG C, adjusting the pH value of a system to be 2 to 4, heating to the final temperature of between 80 and 100 DEG C and adding a specific surface control agent which may be one or more of glycol, ethyl acetate, glycerol, acetone and trichloroethane; preserving the heat for 2 to 4 hours and performing a hydro-thermal reaction; ageing for 1 to 2 hours; washing; drying; and performing particle size classification to obtain the final product.

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