A Proposed Mechanism of Photocatalytic Oxidation of Trichloroethylene in Gas Phase

来源 :Chinese Chemical Letters | 被引量 : 0次 | 上传用户:woshixiaomei110
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GC/MS has been used to identify gas phase products and intermediates tbrmed during the gas phase photocatalytic oxidation of trichlorocthylene (TCE) on TiO_2, with low BET surthce area. A new byproduct. oxalyl choloride (CICOCOCI) was detected together with other byproducts such as COC1_2. CHCI_2. DCAC and C,HCI,. 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. GC / MS has been used to identify gas phase products and intermediates tbrmed during the gas phase photocatalytic oxidation of trichlorocthylene (TCE) on TiO_2 with low BET surthce area. A new byproduct. Oxalyl choloride (CICOCOCI) was detected together with other byproducts such The COC1_2. CHCI_2. DCAC and C, HCI ,. 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.
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