Photopromoted carbonylation of chloroalkanes with carbon monoxide and carbon dioxide was catalyzed by copper salts and carried out under mild conditions.

This paper discussed the technique of processing preserved egg based on different zinc copper ratio, analyzed the dosage and influence of zinc salt and copper salt in the preserved egg.

The technology and method of processing and producing the copper salt by making use of copper miner and newborn resource are described and the methods are compared.