The reaction pathway for the heterogeneous photocatalysis of trichloroethylene in gas phase.
Trichloroethylene (TCE) has been widely used in industry. It is considered a hazardous and carcinogenic air pollutant. In this investigation, TCE photocatalytic reactions were performed in a packed bed reactor configured as a continuous flow reactor and a FT-IR sample cell used as a batch reactor to determine the intermediates under irradiation by 365 nm UV light. In this study, the intermediates detected during these reactions were phosgene, dichloroacetyl chloride (DCAC), chloroform, hexachloroethane, alcohols, esters, aldehydes, carbon monoxide, and carbon dioxide. The possible reaction mechanisms began with the Cl- subtraction. The Cl radicals then interacted with TCE to form various intermediates and products.
Wang
Kuo-Hua
KH
Department of Environmental Engineering and Health, Yuanpei Institute of Science and Technology, 306 Yuanpei St., ROC, Hsinchu, Taiwan. khwang@pc.ymit.edu.tw
Jehng
Jih-Mirn
JM
Hsieh
Yung-Hsu
YH
Chang
Chen-Yu
CY
D002273:Carcinogens / Q000737:chemistry*; D002384:Catalysis; D002713:Chlorine / Q000737:chemistry; D005740:Gases; D010777:Photochemistry; D012997:Solvents / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D014241:Trichloroethylene / Q000737:chemistry*; D014466:Ultraviolet Rays; D014835:Volatilization
D002273:Carcinogens; D005740:Gases; D012997:Solvents; D014241:Trichloroethylene; D002713:Chlorine