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对 CFC-12、Halon 1301、Halon 1211、Halon 1202及其替代物 HCFC-22、Halon 1201在天然物质和由人类活动所产生的物质上的吸收作用进行了研究。实验结果表明,在水和海水中,CFC_s 和 BFC_s 吸收较少,吸收率随卤代烃沸点升高而增加。替代物 HCFC-22和 Halon 1201由于分子中存在碳氢键吸收率高达20%和40%左右。固体物质对上述气体的吸收率以 Al_2O_3最高,达10%左右,其次为 TiO_2、灰尘、碳。在 SiO_2和砂上几乎不吸收。用 Xe 灯作为光源研究了在各种固体物质上的光解速度。结果表明,CFC-12、FCFC-22在实验条件下不发生光解,而 Halon 则由于在 Al_2O_3、TiO_2、砂上发生非均相反应而加速光解。
The absorption of CFC-12, Halon 1301, Halon 1211, Halon 1202 and their alternatives HCFC-22 and Halon 1201 on natural substances and substances produced by human activities was studied. The experimental results show that in water and seawater, CFC_s and BFC_s absorb less, and the absorption rate increases with the increase of boiling point of halogenated hydrocarbons. The alternatives HCFC-22 and Halon 1201 absorb up to 20% and 40% due to the presence of hydrocarbon-hydrogen bonds in the molecule. The solid material on the gas absorption rate to the highest Al_2O_3, up to 10%, followed by TiO_2, dust, carbon. Almost no absorption on SiO 2 and sand. The Xe lamp was used as a light source to study the photolysis rate on various solid materials. The results showed that photodecomposition of CFC-12 and FCFC-22 did not occur under the experimental conditions, while Halon accelerated photolysis due to heterogeneous reaction on Al 2 O 3, TiO 2 and sand.