摘要
实验采用高温固相法合成K2Ti6O13前驱物,然后通过酸化制备出相应的固体酸K2Ti6O13。并应用X-射线粉末衍射(XRD)、紫外-可见漫反射光谱(UV-vis-DRS)和NH3-TPD等表征手段对层状固体酸的结构、光谱特性和酸性进行研究。结果表明,由高温固相法合成的K2Ti6O13是一种典型的层状化合物,并且是亚纳米级的薄片结构;NH3-TPD表明K2Ti6O13表面是中等强度酸。
The precursors of layed potassium titanate K2Ti6O13 were synthesized by solid-state reaction,and then through acidizfication prepared the corresponding solid acid H2Ti6O13.Structure feature of the sample as-prepared was characterized by means of powder X-ray diffraction（XRD）,UV-visible diffuse reflectance spectroscopy（UV-vis-DRS）.The acidity of the sample as-prepared was characterized by means of NH3-TPD.The results showed that titanate K2Ti6O13 have layed structure and sub-nanometer thin structure.The spectral features showed that K2Ti6O13 produce absorption in the UV region.
出处
《化学工程师》
CAS
2011年第10期14-16,共3页
Chemical Engineer
