摘要
以煅烧型α-Al_(2)O_(3)为原料,采用挤压成型工艺及固态颗粒烧结法,以羧甲基纤维素(CMC)为造孔剂与黏结剂,丙三醇作润滑剂,加入二元助剂Cu O-TiO_(2),制备氧化铝基陶瓷膜支撑体。探究支撑体最佳干燥条件、烧结制度,通过对支撑体孔隙率、纯水通量、抗折强度、耐酸碱腐蚀性等性能的表征,探究造孔剂、润滑剂的最佳添加量。结果表明,最佳条件为温度30°C、相对湿度35%RH条件下干燥48h,烧结温度为1200°C,CMC添加量为3%,丙三醇添加量为3%,此时支撑体的孔隙率为33.2%,纯水通量6711.23L·(m^(2)·h·MPa)^(-1),抗折强度75.05MPa,酸、碱腐蚀率分别为0.82%、0.78%。
Calcinedα-Al_(2)O_(3) was used as raw material,by adopting extrusion molding process and solid particle sintering method,carboxymethyl cellulose(CMC)was used as the pore-forming agent and binder,glycerol as the lubricant,and the binary additive CuO-TiO2 was added to prepare the alumina-based ceramic membrane support.The optimal drying conditions and sintering system of the support body were explored,and the optimal addition amounts of the pore-forming agent and lubricant were investigated by characterizing the support′s properties including porosity,pure water flux,flexural strength,acid and alkali corrosion resistance.The results showed that the optimal conditions were drying at 30℃and 35%relative humidity(RH)for 48h,with a sintering temperature of 1200℃,3%CMC and 3%glycerol.Under these conditions,the support had a porosity of 33.2%,a pure water flux of 6711.23L·(m^(2)·h·MPa)^(-1),a flexural strength of 75.05MPa,and acid,alkali corrosion rates of 0.82%,0.78%.
作者
惠璠
王丽贤
庾莎莎
韩丹丹
郭雅妮
HUI Fan;WANG Li-xian;YU Sha-sha;HAN Dan-dan;GUO Ya-ni(Shaanxi Modern Architecture Design&Research Institute Co.,Ltd.,Xi'an 710021,China;School of Environmental and Chemical Engineering,Xi'an Polytechnic University,Xi'an 710048,China)
出处
《化学工程师》
2025年第12期17-21,35,共6页
Chemical Engineer
基金
陕西省科技厅重点研发计划项目(2024SF-YBXM-573)。
关键词
氧化铝
陶瓷膜支撑体
二元助剂
耐酸碱
alumina
ceramic membrane support
binary additive
acid and alkali resistance
