质子导体氢泵在铝液脱氢过程中的动力学

实验采用自制的BaCe09Y01O3-α质子导体组装氢泵，进行了铝液脱氢实验，通过拟合分析氢含量随时间的变化曲线，研究铝液脱氢的动力学过程.实验结果表明:铝液氢含量S随着脱氢时间的增大而降低，脱氢速度随氢含量的降低而产生变化，当氢含量S≥0246mL/100g时，脱氢速度v为000116mL/(100g·min)；当S<0246mL/100g时，脱氢速度v=00120S-00022，即脱氢速度随氢含量的降低而减小，脱氢化学反应为此阶段的速率控制步骤.氢泵脱氢极限氢含量随着外加电压的增加而降低，当外加电压达到20V以上时，铝液氢含量低于0096mL/100g，满足高纯铝对氢含量的要求.

Kinetics of Dehydrogenation in Molten Aluminum Using Proton Conductor Hydrogen Pump

The aluminum liquid dehydrogenation test was carried out by the self made BaCe09Y01O3-α proton conductor electrochemical hydrogen pump. The dynamic procedure of the aluminum liquid dehydrogenation was researched though fitting analysis of variation curve between hydrogen content with time. The dehydrogenation experiment results showed that the hydrogen content (S) of the aluminum liquid decreased in the dehydrogenation process. The relation of dehydrogenation rate and hydrogen content in aluminum liquid was obtained， and the results indicated the dehydrogenation rate v was 000116mL/(100g·min) when the hydrogen content was more than 0246mL/100g in the dehydrogenation process. When hydrogen content was less than 0246mL/100g， the dehydrogenation rate decreased with the decrease of the hydrogen content， which was in the rage of 00120S-00022， where the chemical reaction was the rate determining step. Hydrogen pump dehydrogenation limit hydrogen content decreased with the increase of applied voltage， when the applied voltage was more than 20V， the aluminum liquid hydrogen content was lower than 0096mL/100g， which satisfied the requirement of high pure aluminum on hydrogen content.