超声波及压力处理的TiO_2柱撑蒙脱土的制备与光催化性能

TiO2-pillared montmorillonite catalysts were synthesized by the sol-gel method and then treated by ultrasonic and pressure.The catalysts were characterized by XRD,FT-IR and TEM,and the results indicated that all the TiO2-pillared montmorillonite contained anatase-like TiO2 particles between silicate layers of montmorillonite.The efficiency of phenol degradation under ultraviolet light with TiO2-PILM were tested,and the effects of phenol initial concentration and pH value on the efficiency of photocatalytic degradation of phenol were studied.The results indicated that the catalyst treated by ultrasonic and pressure showed higher photocatalytic activity.The efficiency of phenol degradation was higher at initial phenol concentration of 10—20 mg·L -1,TiO2-PILM dosage of 1 g·L -1 and pH value of 3—5.

层间组装TiO2蒙脱土的制备及其用于汽油脱硫过程的研究

采用溶胶-凝胶法制备了TiO2柱撑蒙脱土,并将样品用于FCC汽油的脱硫。利用XRD、SEM、N2吸附/脱附和FT-IR分析技术对制备样品进行表征。考察了钛酸丁酯与Na-MMT的比例以及焙烧温度对样品结构和脱硫性能的影响。TiO2柱撑蒙脱土的比表面积为100~215m2/g,平均孔径为4.0~7.0 nm,总孔容为0.15~0.22 cm3/g。硫容量达到1.65 mg/g,是400℃焙烧原土硫容量的2倍。