Catalytic Ozonation of Cinnamaldehyde to Benzaldehyde over Ca(OH) <sub>2</sub>
Xuan Luo, Yiyuan Wang, Xinling Xie, Tongming Su, Jianhua Chen, Zuzeng Qin, Hongbing Ji
Abstract
Abstract In this study, the ozonation of cinnamaldehyde to benzaldehyde catalyzed by Ca(OH) 2 was studied by using the bubbling reactor with in situ diffuse reflectance infrared Fourier transform spectrum (DRIFTS) and Density Function Theory (DFT). After the preparation, characterization, and catalytic activity evaluation of Ca(OH) 2 , the data showed that specific surface area, average pore diameter, and pore volume of Ca(OH) 2 had a 1.77‐, 1.44‐, and 3.06‐fold larger than those of CaO, respectively. Compared with CaO catalysis, the activation energy of cinnamaldehyde ozonation decreased 41 % under Ca(OH) 2 catalysis. in situ DRIFTS and DFT results indicated that alkaline‐earth metal ozonide was the yield on the Ca(OH) 2 surface after the adsorption, and the ozonide selectively oxidated the carbon‐carbon double bond of cinnamaldehyde with the Criegee mechanism.