近临界水中苯甲醛绿色合成新方法

n environmentally-benign process for synthesis of benzaldehyde in near-critical water without adding any catalyst was proposed. The kinetics of non-catalyzed hydrolysis of cinnamaldehyde in water at 15 MPa and temperatures from 240℃ to 320℃ was investigated. The activation energy evaluated was 59.8 kJ/mol. Over 57.0% yield of benzaldehyde could be reached under optimized conditions at 280℃, 150bar, and 6h residence time. Not only was the process proposed environmentally friendly, but also the product benzaldehyde remained its natural property as only water was needed in the process.