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

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.

Effect of Nitrate Doping on the Properties of Chemically Synthesized Calcium Hydroxide Nanoparticles

“…Ca(OH) 2 has many applications in biomedical, [6,7] dental traumatology, [8,9] and Portland cement production [10] . In the ozonation of cinnamaldehyde to benzaldehyde Ca(OH) 2 is also used as a catalyst [11] . Nitrates are also useful in many application due its low price, great heat capacity, low melting point and, moderate density that implies splendid energy storing capability.…”

“…[10] In the ozonation of cinnamaldehyde to benzaldehyde Ca(OH) 2 is also used as a catalyst. [11] Nitrates are also useful in many application due its low price, great heat capacity, low melting point and, moderate density that implies splendid energy storing capability. In addition, calcium and other hydroxides have many applications with the nitrates.…”