1results about How to "Avoid high temperature and pressure" patented technology

This invention discloses a Co3O4 / CeO2 composite electrode, its preparation method, and an electrosynthesis method for epoxides. The Co3O4 / CeO2 composite electrode comprises carbon paper and a Co3O4 / CeO2 nanoneedle composite material supported on the carbon paper. This invention uses the Co3O4 / CeO2 nanoneedle composite material as the anodic electrocatalyst to prepare epoxides in a chloride-mediated aqueous solution system with olefins as substrates under low / room temperature and atmospheric pressure via anodic electrooxidation. The electrosynthesis method of this invention uses water as the sole oxygen source, eliminating the need for external peroxides, molecular oxygen, or other hazardous oxidants. The reaction conditions are mild, environmentally friendly, and energy-efficient, exhibiting both high activity and high stability. It is applicable to the electro-epoxidation reactions of various olefin substrates, solving problems such as severe oxygen evolution side reactions, poor catalyst stability, and difficulty in balancing activity and selectivity in existing technologies.