摘要
采用焙烧法制备钛酸钾,以钛酸钾经过离子交换得到水合钛酸为原料,焙烧制得TiO2晶须,运用XRD、BET和SEM技术对其结构性质进行了表征,考察了制备条件对钛酸钾及TiO2结构的影响。结果表明,四钛酸钾在K2CO3与TiO2的摩尔比分别在为1︰3,最佳合成时间为2 h,焙烧温度为1 000℃的合成工艺最佳;经过离子交换,二次焙烧得到的具有锐钛矿型介孔二氧化钛晶须,晶须为短棒状,直径为0.5～1.5μm,长度为10～30μm。对噻吩模型化合物进行加氢脱硫效果考察,在低温低压下具有较高的活性。
A series of TiO2 whisker was synthesized by sintering treatment of titanic acid hydrate （H2Ti409.xH20） prepared from potassium titanate （K2Ti409） via ion-exchange ,and was characterized by XRD ,BET and SEM. The effect of preparation conditions was inspected. The results indicate that the preferred synthesis condition of K2Ti409 is as follow： the molar ratio of K2CO3 to TiO2 is 1 ： 3, the synthetic time is 2 h, the sintering temperature is 1 000 ~C;The TiO2 whisker synthesized via ion-exchange and sintering has mesoporous structure of anatase phase,and has short bar morphology with 0.5-1.5 gm in diameter, 10-30 Arm in length： Its activity for thiophene hydrodesulfurization is well under low temperature and low pressure.
出处
《当代化工》
CAS
2012年第12期1312-1314,共3页
Contemporary Chemical Industry
关键词
烧结法
TiO2晶须
钛酸钾
Sintering method
TiO2 whisker Potassium titanate
