Abstract: 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.

Key words: proton conductor, hydrogen pump, dehydrogenation, hydrogen content, rate determining step