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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Enhanced Formation of Ozone by the Addition of Chloropicrin (Trichloronitromethane) to Propene/NO/Air/Photoirradiation Systems
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Enhanced Formation of Ozone by the Addition of Chloropicrin (Trichloronitromethane) to Propene/NO/Air/Photoirradiation Systems

机译:通过在氯丙烯(三氯硝基甲烷)中向丙烯/一氧化氮/空气/光辐射系统中添加臭氧来增强臭氧的形成

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摘要

The photolysis of chloropicrin in air at 1 atm was performed in a 6-m~3 photochemical reaction chamber with a combination of Xe are lamps and Pyrex filters as a light source. Phosgene was obtained as one of the main products with a yield of unity. No nitrosyl chloride was observed, which supports the C-N scission mechanism for the photolysis. Photochemical ozone formation was enhanced when chloropicrin was added to the propene/NO/air/photoirradiation system after the ozone concentration maximum had been reached. The ozone-formation factor for chloropicrin under the conditions employed was, however, estimated to be 0.25 mole of ozone formed per mole of the decomposed chloropicrin. This implies that the Cl atom, itself, contributes to the destruction of ozone rather than to the formation of ozone under the experimental conditions. NO_2 released from chloropicrin is the source of enhanced ozone. If the amount of chloropicrin as a soil fumigant increases, it can cause an increase of the ozone concentration in suburban and/or rural areas.
机译:在1m的空气中,在6m〜3的光化学反应室中,以氙气灯和派热克斯滤光片为光源,对氯化苦进行光解。获得光气作为主要产物之一,具有统一的产量。没有观察到亚硝酰氯,其支持光解的C-N分裂机理。当达到最大臭氧浓度后,向丙烯/一氧化氮/空气/光辐照系统中添加氯苦rin酸酯,可增强光化学臭氧的形成。然而,在所采用的条件下,氯化苦的臭氧形成因子估计为每摩尔分解的氯化苦形成的臭氧为0.25摩尔。这表明Cl原子本身有助于破坏臭氧,而不是在实验条件下形成臭氧。氯化苦中释放出的NO_2是增强臭氧的来源。如果作为土壤熏蒸剂的氯化苦的数量增加,则会导致郊区和/或农村地区的臭氧浓度增加。

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