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Experimental investigation of incremental reactivity of di-tert-butyl peroxide

ISSN号：1001-6538
期刊名称：科学通报(英文版)
时间：0
页码：1629-1634
语言：中文
分类：P402[天文地球—大气物理学与大气环境;天文地球—大气科学及气象学]
作者机构：[1]Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China, [2]State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China, [3]Graduate University of the Chinese Academy of Sciences, Beijing 100039, China, [4]Research Center for Atmospheric Environment, Beijing Normal University, Beijing 100875, China
相关基金：Supported by the Knowledge Innovation Program of the Chinese Academy of Sciences as part of ＂A Preliminary Study of the Formation and Evolution Mechanism of Photochemical Smog in the Beijing Region and Its Control Experiments＂（Grant No. KJCX2-SW-H8）. Hundred Talents Fund and the National Natural Science Foundation of China （Grant Nos. 20577052, 20673123, 20473094 and 20503035）
相关项目：反应活性物种在大气典型颗粒物表面的非均相化学研究

关键词：双特丁基过氧化物, 烟雾室, 光化反应, 光化烟雾, 大气化学, di-tert-butyl peroxide, smog chamber, photochemical reactions, photochemical smog, incremental reactivity

中文摘要：

di-tert-butyl 过氧化物(DTBP ) 的大数量由于人的活动被射出进对流层。它在大气的光化学反应的角色没被理解。这研究介绍 DTBP 和 NO_X 的光化学反应的结果，它在温度下面在一个白手起家的烟雾房间被模仿了(29 ± 1 )° C。两个都，臭氧和 NO_2 的墙腐烂能被忽视，与在模拟实验的结果相比。在实验使用的紫外光的 Theeffective 紧张是 1.28x10 ~(-3)s~( 被 NO_2 光分解作用的反应速率常数表示在的 -1), 净化了空气。反应机制根据我们另外的研究人员的结果和报告被建议。在三个模拟实验的增长反应(红外) 的最大的价值是 9.53x10 ~(-2), 5.23x10 ~(-2)and3.78x10~(-2), 分别地。增长反应随 DTBP 的起始的集中的增加减少了。在这研究获得的 DTBP 的红外价值比得上在我们的以前的研究报导的乙炔的。

英文摘要：

Large quantities of di-tert-butyl peroxide （DTBP） have been emitted into the troposphere due to human activities. Its role in the atmospheric photochemical reaction has not been understood. This study presents the results of the photochemical reactions of DTBP and NO,, which have been simulated in a self-made smog chamber under the temperature of （29±1）℃. Both the wall decays of ozone and NO= could be neglected, compared to the results in simulative experiments. The effective intensity of UV light used in the experiments was 1.28×10^-3 s^-1, which was expressed by the rate constant of NO2 photolysis in purified air. The reaction mechanism was proposed according to our results and reports of other researchers. The maximum values of incremental reactivity （IR） in the three simulative experiments were 9.53^10^-2, 5.23×10^-2 and 3.78×10^-2, respectively. The incremental reactivity decreased with the increase of initial concentrations of DTBP. The IR value of DTBP obtained in this study was comparable to that of acetylene reported in our previous research.

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