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以铝钒土酸溶出的硫酸铝经脱铁后的溶液为铝源，与碱或碱金属盐交替加料中和沉淀（即ｐＨ摆动法）制备的氢氧化铝，具有典型的拟薄水铝石结构，可直接成型制成催化剂载体γ－Ａｌ２Ｏ３。该法原料价格低廉，制备方法简便。试验考察了原料匹配、溶液浓度、反应温度、摆动次数等条件对产品孔结构参数的影响，并对产品的晶型、形貌、表面酸性质等进行了测试。该法制备的氧化铝适宜作为加氢精制催化剂的载体，且特别适用于制备加工高含氮重油的加氢脱氮催化剂。
The aluminum sulfate, which is obtained by taking aluminum vanadate as the dissolution solvent, is an aluminum source after the iron is de-ironized, aluminum hydroxide prepared by alternately adding alkali and alkali metal salts and neutralizing the precipitate (ie, pH swing method), and has the typical pseudoboehmite Structure, can be directly formed into a catalyst carrier γ-Al2O3. The method of low raw material, preparation method is simple. The influences of raw material matching, solution concentration, reaction temperature, number of times of oscillation and so on on the pore structure parameters of the product were investigated. The crystal form, morphology and surface acidity of the product were also tested. The alumina prepared by the method is suitable as a carrier for hydrofinishing catalysts and is particularly suitable for preparing hydrodenitrogenation catalysts for processing heavy nitrogen-containing heavy oils.