Catalytic Ozonation of Cinnamaldehyde to Benzaldehyde over Ca(OH)2

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.

Automated summary

This study investigated the ozonation of cinnamaldehyde to benzaldehyde catalyzed by Ca(OH)(2) with the use of in situ DRIFTS and DFT. The data showed that Ca(OH)(2) had a larger specific surface area, average pore diameter, and pore volume compared to CaO, leading to a decreased activation energy for cinnamaldehyde ozonation. Analysis revealed that alkaline-earth metal ozonide was formed on the Ca(OH)(2) surface, leading to selective oxidation of the carbon-carbon double bond of cinnamaldehyde through the Criegee mechanism.