Citation: Gong Hu LI, Hu Lan MA, Wei Zhu AN. A Proposed Mechanism of Photocatalytic Oxidation of Trichloroethylene in Gas Phase[J]. Chinese Chemical Letters, ;2000, 11(1): 31-34. shu

A Proposed Mechanism of Photocatalytic Oxidation of Trichloroethylene in Gas Phase

Chengdu Institute of Organic Chemistry, The Chinese Academy of Sciences, Chengdu 610041

Received Date: 9 August 1999

Fund Project: This work was supported by the National Natural Science Foundation of China (Grant NO.29677017).

GC/MS has been used to identify gas phase products and intermediates formed during the gas phase photocatalytic oxidation of trichloroethylene (TCE) on TiO₂ with low BET surface area. A new byproduct, oxalyl choloride (ClCOCOCl) was detected together with other byproducts such as COCl₂, CHCl₃, DCAC and C₂HCl₅. Firstly the method of perturbation on the reaction system was conducted. Very little amount of water was carried into the feed gas and subsequent changes were observed. The discussion based on the product distribution changes led to a postulated mechanism consisting of two stages.
- Photocatalytic oxidation,
- trichloroethylene,
- product distribution
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