School of Space and Environment, Beihang University, Beijing 100191, China.
Molecules. 2018 Apr 12;23(4):890. doi: 10.3390/molecules23040890.
The removal of acetone and benzene series (BTEX) under individual and concurrent conditions is carried out in a coaxial nonthermal plasma (NTP) reactor. The results show that the benzene series has a significant negative impact on acetone conversion and CO₂ selectivity under NTP treatment. Furthermore, it is found that -xylene significantly promotes CO selectivity under co-treatment with acetone because of greater CO generation. Based on the results of transient FTIR, MS, and GC-MS, it is seen that quantities of formic acid, formaldehyde, and ring-opening byproducts from benzene series decomposition are reduced, while quantities of aromatic byproducts with carboxyl, phenolic, and aldehyde groups on the benzene ring increase under coexistence conditions. With the help of theoretical calculation and kinetic analysis, hydrogen abstraction from the methyl group and active hydroxyl radical consumption are proposed as critical factors in the BTEX inhibition effect on acetone degradation.
在同轴非热等离子体（NTP）反应器中分别和同时进行去除丙酮和苯系物（BTEX）的实验。结果表明，苯系物对 NTP 处理下的丙酮转化率和 CO₂选择性有显著的负面影响。此外，还发现 -二甲苯在与丙酮共处理时由于 CO 生成量更大而显著促进了 CO 的选择性。基于瞬态傅里叶变换红外光谱（FTIR）、质谱（MS）和气相色谱-质谱联用（GC-MS）的结果，可以看出在共存条件下，苯系物分解产生的甲酸、甲醛和开环副产物的量减少，而苯环上带有羧基、酚基和醛基的芳香族副产物的量增加。借助理论计算和动力学分析，提出了从甲基中提取氢和消耗活性羟基自由基是 BTEX 抑制丙酮降解的关键因素。
