Chen Hua, Tian Congxue, Liu Haibo, Meng Junquan, Liu Huiling, Yang Dong, Zhu Yuxuan. Effects of Pre-adding Water on Structure of Metatitanic Acid[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(3): 21-26. doi: 10.7513/j.issn.1004-7638.2018.03.005
Citation:
Chen Hua, Tian Congxue, Liu Haibo, Meng Junquan, Liu Huiling, Yang Dong, Zhu Yuxuan. Effects of Pre-adding Water on Structure of Metatitanic Acid[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(3): 21-26. doi: 10.7513/j.issn.1004-7638.2018.03.005
Chen Hua, Tian Congxue, Liu Haibo, Meng Junquan, Liu Huiling, Yang Dong, Zhu Yuxuan. Effects of Pre-adding Water on Structure of Metatitanic Acid[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(3): 21-26. doi: 10.7513/j.issn.1004-7638.2018.03.005
Citation:
Chen Hua, Tian Congxue, Liu Haibo, Meng Junquan, Liu Huiling, Yang Dong, Zhu Yuxuan. Effects of Pre-adding Water on Structure of Metatitanic Acid[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(3): 21-26. doi: 10.7513/j.issn.1004-7638.2018.03.005
Using low concentration of industrial titanyl sulfate solution as raw material,metatitanic acid was prepared via the self-seeded thermal hydrolysis sulfate process.The effects of pre-adding water on structure of metatitanic acid were investigated.The as-prepared samples were characterized by pigment properties test,particle size distribution measurement,XRD,TEM,HRTEM,Raman and IR.The results show that a balance is reached between the growth rate and formation rate of the crystal nucleus by pre-adding water to control the TiO2 concentration at around 160 g/L in the system,and finally the consequential metatitanic acid with high anatase degree and quality can be obtained.The amount of pre-adding water affects the number,structure and activity of crystal nuclei and changes the combination ofand Ti4+,resulting in a decrease in the unit cell parameter c,a reduction in the integrity of the metatitanic acid particles,and the formation of discontinuous grid stripes on crystal plane(101).The amount of pre-adding water also affects the bonding way of the anatase TiO2and the vibration mode of the bond in metatitanic acid.The greater the intensity of the Raman peak of metatitanic acid,the more complete the crystal structure.