Study on Selective Ozonation of Cinnamon Oil Residues Catalyzed by CaO
After distillation of primary cinnamon oils, remaining residues at bottom of rectifying tower, also called cinnamon oil residues, contain cinnamaldehyde and olefin compounds. According to achievements of pre-vious researches, CaO was used to catalyze ozonation of olefin compounds in cinnamon oil residues and reaction products were analyzed by gas chromatography and gas chromatography-mass spectrometry (GC-MS), which could separate cinnamaldehyde in cinnamon oil residues by distillation and realize reutilization of cinnamon oil residues. Results showed that one of ten olefin compounds was detected in reaction products, and relative con-tent of cinnamaldehyde increased from 56.46％to 80.48％after 60 min of ozonation. After reaction, aldehydes and ketones generated from ozonation of olefin compounds were not detected by GC-MS. Ozonation could re-move olefin compounds in cinnamon oil residues basically and most of cinnamaldehyde remained.
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维普
