Direct electrochemical preparation of titanium alkoxides
- 化学化工－已发表论文 
Titanium alkoxides were directly prepared using titanium as sacrificing anode in absolute alchol, Titanium alkoxides were characterized by FT - IR spectra, Raman spectra and element analysis. The influence of temparture, conductive additives, and traces of water on the product yield was also investigated. The results showed that the direct electrochemical perparation of titanium alkoxides had high current efficiency and electrolysis yield. These titanium alkoxides have high purity and can be directly used as precursor of nanometer oxides. The experiments showed that the controlling temperature under 50 similar to 60 degreesC, selecting R4NBr as conductive additives and preventing titanium anode from being passiviated can improve product yeild. The reaction mechanism is also expounded. Ti(III)(OR)(n)Br-m was formed on the anode surface, then the Ti(III)(OR)(n)Br-m was oxided into Ti(IV)(OR)(n)Br-m and transilated to cathode room, On the cathode surface Ti(IV)(OR)(n)Br-m was reduced into Ti(OR)(4). The formation of titanium alkoxides on the anode surface was also investigated by in situ surface Raman spectroscopy.