炭在熔融碳酸盐中的直接电化学氧化性能

研究了活性炭粉在熔融碳酸盐中的直接电化学氧化性能. 通过线性扫描伏安曲线的测试发现, 将炭粉用酸处理, 碳酸盐中的炭含量、炭粒径、反应温度和反应气氛均会对活性炭的电化学氧化性能产生影响. 研究结果表明, 用HCl处理活性炭, 升高反应温度, 适当增加炭含量及炭粒子粒径和通入N2气均会提高活性炭的电化学氧化活性. 经HCl处理的、炭含量为15 g和炭粒径<100 μm的活性炭在850 ℃下、在N2气保护下和电位扫描速率为20 mV/s时的开路电位(OCP)为-1.40 V, 在-0.4 V下的电流密度可达到200 mA/cm2.

Performance of Electrochemical Oxidation of Carbon in Molten Carbonates

The performance of the electrochemical oxidation of the activated carbon in the carbonates was investigated. It is found that the performance of the electrochemical oxidation of the activated carbon was significantly influenced by acid treatment, carbon loading, carbon particle size, reaction temperature and reaction atmosphere by the linear sweeping voltammograms test. The results show that the electrochemical oxidation activity of carbon was improved by the HCl treatment of carbon, increasing the reaction temperature, selecting the suitable carbon particle size, increasing the content of the activated carbon in carbonates and aerating N2. OCP and the current density at -0.4 V of the activated carbon treated by HCl with 15 g carbon content and <100 μm carbon particles size could respectively reach -1.40 V and 200 mA/cm2 at 850 ℃.