Abstract: Impinging Streams (IS) technology is an effective process intensification method, which can make a rapid precipitation reaction reach high supersaturation instantly.IS technology is conducive to the instantaneous formation of crystal nucleus and can inhibit the growth of crystal nucleus.Therefore, the application of IS technology in the synthesis of pseudo boehmite can solve such problems as uneven particle size and large pore size distribution of products.In this study, Al2(SO4)3 and NaAlO2 solution are used as raw materials to synthesize pseudo boehmite by IS technology.The effects of gelling pH, gelling temperature, aging temperature and drying method on the crystallinity, pore size distribution and specific surface area of pseudo boehmite are investigated.The results show that the prepared pseudo boehmite with a high specific surface area (more than 400 m2·g-1) can be obtained at gelling pH=10, both gelling temperature and aging temperature at 70℃.A spray drying method is superior to static drying method in preparing pseudo boehmite.
石淋淋, 于如军, 王泽尧, 彭成, 姚风浩, 官凤刚, 山书锋. 撞击流技术用于拟薄水铝石合成工艺的研究[J]. 现代化工, 2021, 41(S1): 202-207.
SHI Lin-lin, YU Ru-jun, WANG Ze-yao, PENG Cheng, YAO Feng-hao, GUAN Feng-gang, SHAN Shu-feng. Study on synthesis of pseudo boehmite by impinging stream technique. Modern Chemical Industry, 2021, 41(S1): 202-207.