摘要
低电位、长使用寿命的高性能催化钛阳极对氯碱行业的电解析氯工艺具有重要的作用。采用四氯化钛水解法,制备出了高催化活性的析氯用催化钛阳极,通过X射线衍射(XRD)、扫描电镜(SEM)和极化曲线分别对阳极的物相结构、形貌、析氯电位和强化寿命等进行了表征。结果表明:制备的钛阳极成分均匀,晶粒尺寸可达纳米级,析氯电位低至1.08 V,表面纳米粘连结构的形成减小了表面裂纹的产生,减缓了钛阳极的钝化和老化,延长了阳极的使用寿命,较传统的热分解法具有更高的性价比。
High-performance titanium catalytic anode is important for the electrolysis chlorine process in chlor-alkali industry. TiCl4 hydrolysis method was used to prepare high-performance titanium catalytic anode for chlorine evolution. Subsequently,the phase structure,morphology,chlorine evolution potential and forced life of anode were analyzed by X-ray diffraction( XRD),scanning electron microscope( SEM) and polarization curves. Results showed that the composition of the obtained titanium anode was uniform,and the size of crystal reached nanoscale,as well as the chlorine evolution potential declined to 1.08 V. Moreover,the formation of nano-stiction structure reduced the surface cracks,slowed down the passivation and ageing of titanium anode,and prolonged the service life,which presented better price-quality ratio than traditional thermal pyrolysis.
作者
胡媛媛
HU Yuan-yuan(Jiangsu Ankaite Technology Co.,Ltd.,Jiangyin 214404,China)
出处
《材料保护》
CAS
CSCD
北大核心
2020年第7期46-48,94,共4页
Materials Protection
关键词
钛阳极
TiCl4水解
纳米结构
催化活性
titanium anode
TiCl4 hydrolysis
nanostructure
catalytic activity
