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›› 2003, Vol. 3 ›› Issue (3): 0-0.

• 3 •    

Effects of Precursors for Preparing Intermediate Layer on the Performance of Ti/SnO2+Sb2O3/PbO2 Anode

WANG Ya-qiong(王雅琼), TONG Hong-yang(童宏扬), XU Wen-lin(许文林)   

  1. College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225002, China
  • 出版日期:2003-06-20 发布日期:2003-06-20

Synergistic Extraction of Lanthanide Ions with 1,4–Bis (1￠–Phenyl–3￠–Methyl– 5￠–Pyrazolone–4￠–yl)–Butanedione–[1,4] and Diantipyryl Methane

ZHANG An-yun, YANG Zi-chao   

  1. 1. Institute of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China；2. Hunan Light Industry College, Changsha, Hunan 410007, China
  • Online:2003-06-20 Published:2003-06-20

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摘要： The Ti/SnO2+Sb2O3/PbO2 anode with SnO2+Sb2O3 intermediate layer obtained by the polymeric precursor method (PPM) and with the conventional route was studied. The morphology and microstructure of SnO2+Sb2O3 intermediate layer derived from different precursors and the top PbO2 active layer were examined by means of ESEM and XRD. The lifetime and electrocatalytic activity of the anode were also assessed by the cyclic voltammetry and accelerated lifetime test in 1.0 mol/L H2SO4 solution. It was found that precursor solvents affected lifetime, microstructure and morphology of the anode, and had little influence on electrocatalysis activity of the electrodes. The accelerated lifetime of Ti/SnO2+Sb2O3/PbO2 anode with intermediate layer prepared by PPM was 29.5 h in 1.0 mol/L H2SO4 solution, which was respectively about four times and twice that of the anode prepared with ethylene glycol and ethanol. After the anode was subjected to thermal corrosion, the lifetime still reached 27 h in contrast to the others.

关键词: intermediate layer, active layer, precursor, electrocatalysis

Abstract: The principle of electrical power generation is applied to FeCl3 leaching of synthetic PbS in this study. The dual cell technique and Evans diagram were introduced to examine the factors that influenced the electrogenerative leaching, such as composition of PbS electrode, agitation, temperature, FeCl3 and NaCl concentrations. It is confirmed that certain quantity of electrical energy in addition to the leached products can simultaneously acquired in the electrogenerative leaching process. The internal resistance of the electrogenerative leaching system is the key factor to power output and temperature affects the output of electrogenerative leaching. The apparent activation energy is determined as 18.26 kJ/mol for FeCl3 leaching of synthetic PbS. Higher FeCl3 and NaCl concentrations affect the electrogenerative leaching process favorably.

Key words: lanthanide ion, synergistic extraction, 4–bis(1￠–phenyl–3￠–methyl–5￠–pyrazolone–4￠–yl)–butanedione –[1, 4], diantipyryl methane

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