对工业拟薄水铝石做了深入表征,并详细研究了拟薄水铝石胶溶酸铝比、催化剂中拟薄水铝石含量以及铝溶胶含量对催化剂重油分子裂化性能的影响。研究显示,拟薄水铝石酸化酸铝比（体积质量比,mL/g）从0增至0.20,孔体积从0.39 cm³/g降至0.27 cm³/g,酸化后酸量先增加后减少,同时催化剂的孔体积下降,重油转化能力先增强后减弱;催化剂中拟薄水铝石质量分数从10%增至25%,催化剂重油转化能力逐渐增强,但随着拟薄水铝石含量的增加,重油产率下降趋势逐渐减小;铝溶胶含量增加将导致催化剂孔体积下降,催化剂重油转化能力下降。

The industrial pseudo-boehmite was deeply characterized,and the impacts of pseudo-boehmite peptizing acid-to-alumina ratio,pseudo-boehmite content in the catalyst and alumina gel′s content on the cracking performance of heavy oil molecules of FCC catalysts were studied in detail.Results showed that when peptizing acid-to-alumina ratio（volume to massratio,mL/g） was increased from 0 to 0.20,pore volume of the catalyst was decreased from 0.39 cm³/g to 0.27 cm³/g.Acidity amount firstly increased and then decreased after acidification.Pore volume decreased and conversion ability of heavy oil firstly increased and then decreased.When pseudo-boehmite′s content in FCC catalyst was increased from 10% to 25%,conversion ability of heavy oil of the catalyst increased gradually,but with the increase of pseudo-boehmite content,the decreasing trend of heavy oil yield gradually decreased.The increase of alumina gel content would lead to a decrease in the pore volume of the catalyst and a decrease in the conversion capacity of the catalyst heavy oil.