Adsorption and reduction of NO2 over activated carbon at low temperature
Adsorption and reduction of NO2 over activated carbon at low temperature
复制标题
活性炭低温吸附还原NO2
DOI：
10.1016/j.fuproc.2010.09.017
复制
发表时间：
2011-01-01
影响因子：
7.5
通讯作者：
Cen, Kefa
中科院分区：
文献类型：
--
作者：
Gao, Xiang;Liu, Shaojun;Cen, Kefa
在 50 摄氏度下研究了活性炭 (AC) 上 NO2 的反应吸附。在活性炭暴露于 NO2 的过程中，观察到了 NO2 吸附及其还原成 NO 的情况。然后进行程序升温解吸（TPD）以评估吸附物质的性质和热稳定性。根据氮氧平衡数据提出了吸附和解吸过程。 AC中的微孔充当形成-C(ONO2)络合物的纳米反应器，该络合物是通过NO2吸附在现有的-C(O)络合物上以及吸附的NO2的歧化而组成的。生成的-C(ONO2)络合物在解吸步骤中分解为NO和NO2。剩余的氧络合物可以解吸为CO和CO2，以恢复AC的吸附和还原能力。 (C) 2010 Elsevier B.V. 保留所有权利。
The reactive adsorption of NO2 over activated carbon (AC) was investigated at 50 degrees C. Both the NO2 adsorption and its reduction to NO were observed during the exposure of AC to NO2. Temperature programmed desorption (TPD) was then performed to evaluate the nature and thermal stability of the adsorbed species. Adsorption and desorption processes have been proposed based on the nitrogen and oxygen balance data. The micropores in AC act as a nano-reactor for the formation of -C(ONO2) complexes, which is composed by NO2 adsorption on existing -C(O) complexes and the disproportionation of adsorbed NO2. The generated -C (ONO2) complexes are decomposed to NO and NO2 in the desorption step. The remaining oxygen complexes can be desorbed as CO and CO2 to recover the adsorptive and reductive capacity of AC. (C) 2010 Elsevier B.V. All rights reserved.