CAJ | 학술논문

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1000℃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.
채용배소법제비태산갑,이태산갑경과리자교환득도수합태산위원료,배소제득TiO2정수,운용XRD、BET화SEM기술대기결구성질진행료표정,고찰료제비조건대태산갑급TiO2결구적영향.결과표명,사태산갑재K2CO3여TiO2적마이비분별재위1︰3,최가합성시간위2 h,배소온도위1000℃적합성공예최가;경과리자교환,이차배소득도적구유예태광형개공이양화태정수,정수위단봉상,직경위0.5~1.5μm,장도위10~30μm.대새분모형화합물진행가경탈류효과고찰,재저온저압하구유교고적활성.
A series of TiO2 whisker was synthesized by sintering treatment of titanic acid hydrate(H2Ti4O9.xH2O) prepared from potassium titanate (K2Ti4O9) 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 K2Ti4O9 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℃;The TiO2 whisker synthesized via ion-exchange and sintering has mesoporous structure of anatase phase,and has short bar morphology with 0.5~1.5μm in diameter,10~30μm in length;Its activity for thiophene hydrodesulfurization is well under low temperature and low pressure.