引用本文:
万新军, 宋明友, 吴蓉, 褚道葆. 间接电氧化法合成甘油醛[J]. 应用化学,
2003, 20(6): 578-581.
Citation: WAN Xin-Jun, SONG Ming-You, WU Rong, CHU Dao-Bao. Synthesis of Glyceraldehydes by Indirect Electro-oxidation[J]. Chinese Journal of Applied Chemistry, 2003, 20(6): 578-581.
Citation: WAN Xin-Jun, SONG Ming-You, WU Rong, CHU Dao-Bao. Synthesis of Glyceraldehydes by Indirect Electro-oxidation[J]. Chinese Journal of Applied Chemistry, 2003, 20(6): 578-581.
间接电氧化法合成甘油醛
摘要:
通过电化学合成前驱体和溶胶凝胶法在Ti表面修饰一层纳米TiO2膜,在纳米TiO2膜上电沉积分散的Pt微粒制成钛基纳米TiO2-Pt (Ti/nano TiO2-Pt)修饰电极。采用循环伏安法、间接电氧化法研究了纳米TiO2-Pt修饰电极的电催化活性以及Mn3+/Mn2+媒质氧化甘油为甘油醛的过程。结果表明,纳米TiO2-Pt修饰电极对Mn2+的电氧化具有高催化活性,电流效率可达90%以上,非均相电解得到的Mn3+可一步氧化甘油为甘油醛,收率为91%。
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关键词:
- 甘油醛
- / 间接电氧化合成
- / 钛基纳米TiO2-Pt电极
English
Synthesis of Glyceraldehydes by Indirect Electro-oxidation
Abstract:
The precursor Ti(OEt)4 was prepared by anodic dissolution of Ti in absolute ethanol and directly hydrolyzed to give nanocrystalline TiO2 film on titanium electrode (Ti/nano-TiO2) by a sol-gel process.The nanocrystalline TiO2-Pt modified titanium (Ti/nano-TiO2-Pt) electrode was prepared by electrodeposition of Pt on nanocrystalline TiO2 film.Electrocatalytic activity of the Ti/nano-TiO2-Pt electrode for oxidation of Mn2+ to Mn3+ and synthesis of glyceraldehydes were investigated by cyclic voltammetry and indirect electro-oxidation methods.Mn3+ could be regenerated by electrolysis at Ti/nano-TiO2-Pt anode in heterogeneous MnSO4/H2SO4 medium with current efficiency over 90%.Glyceraldehyde was prepared in yield of 91% by the proposed method.
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