洗涤助剂P型分子筛的合成与性能表征

采用具有高白度和较细粒度的煅烧高岭土为原料,通过水热合成法合成P型分子筛,最佳反应条件为:固液比1∶3(高岭土g/碱液mL),NaOH浓度4 mol/L,晶化温度90℃,晶化时间12 h。XRD表明,产品具有良好的P型分子筛特征峰,热重分析可知其具有好的稳定性;粒度分布图和扫描电镜图表明,所得产品是均匀的细小颗粒,和4A沸石相比,它的钙离子交换能力高,适宜作洗涤助剂。

Study on preparation and characterization of detergent P zeolite

Taking calcine kaolin with high whiteness and uniform particles as raw materials,the P zeolite was synthesized by hydrothermal method,the optimum reaction condition were as follows: the ratio of solid to liquid was 1∶3(kaolin g /sodium hydroxide mL),the concentration of sodium hydroxide was 4 mol/L,reaction temperature was 90℃,reaction time was 12 h.It had better characteristic peak of P zeolite by X-ray diffraction,good stability by thermograrimetric analysis,and the narrower grain-size distribution by granularity distribution and SEM,moreover,compared with 4A molecular sieve,it had the high calcium(ionic) exchange ability,so it can be act as detergent.