In recent years, organic electromechanical synthesis with the goal of green chemistry and sustainable development has attracted much attention. Compared with traditional organic synthesis methods performed under high temperature and pressure conditions, indirect electro-chemical synthesis has the advantages of clean reaction, mild conditions and high atomic economy. However, the reported indirect electrolytic catalysts are mainly metal salts and organic small molecules, which usually suffer from poor recyclability and dimerization deactivation. Therefore, the design and development of novel recyclable and highly stable indirect electrolytic catalysts for efficient catalytic conversion of organic reactions is one of the current research hotspots.

In this paper, a covalent organic framework material with bipyridine structure was constructed by Schiff base reaction, and further introduced Pd catalyst on its backbone by coordination reaction to prepare covalent organic framework material with Pd catalytic center. The structure was characterized by X-ray crystal diffraction, absorption and desorption curve test at 77 K under nitrogen, and infrared spectroscopy test. Their catalytic performance as electrolytic cell cathodes for the hydrogenation of alkynes were initially investigated. The experimental results show that such materials have significant electrocatalytic performance for the selective reduction of alkynes to alkanes.