It is showed that the longevity of Pd/C catalyst can be prolonged by adding methanation promoter, and the deactivation can be regenerated by supercritical fluid extraction.

• 提出了钯碳催化剂的制备关键、加入甲烷化助剂可以延长钯碳催化剂寿命、利用超临界流体再生方法可以有效再生失活钯碳催化剂。