【摘要】 对烷氧基铝水解工艺进行深入研究，系统考察了水解液滴加速率、老化温度、老化压力、n（H⁺）/n(Al³⁺)及n（NH₃·H₂O）/n(Al³⁺)对拟薄水铝石结构性能的影响。结果表明，水解速率为2 mL/min时结晶度最佳；老化温度升高会导致颗粒致密化产生团聚作用；老化压力可调控孔径分布；适量碱促进凝胶小颗粒形成；适量酸增大孔容，减小孔径。正交实验显示老化温度对孔径、比表面积和孔容影响最显著。在老化温度20℃、水解速率2 mL/min、老化压力1 MPa、n（H⁺）/n(Al³⁺)=0.1条件下可获得理想孔结构与高比表面积的拟薄水铝石。更多还原

【Abstract】 The hydrolysis process of alkoxylated aluminum was thoroughly investigated, and the effects of hydrolysis droplet acceleration rate, aging temperature, aging pressure, n（H⁺）/n(Al³⁺) and n（NH₃·H₂O）/n(Al³⁺) on the structural properties of pseudo-boehmite were systematically examined.The results showed that the crystallinity was optimal at a hydrolysis rate of 2 mL·min^-1;the increase in aging temperature led to agglomeration of the particles by densification; the aging pressure could regulate the pore size distribution; the appropriate amount of alkali promoted the formation of small gel particles; and the appropriate amount of acid increased the pore volume and decreased the pore size.Orthogonal experiments showed that the aging temperature had the most significant effect on pore size, specific surface area and pore volume.The proposed thin hydrotalcite with ideal pore structure and high specific surface area can be obtained under the conditions of aging temperature of 20℃,hydrolysis rate of 2 mL·min^-1,aging pressure of 1 MPa, and n（H⁺）/n(Al³⁺)=0.1.更多还原