State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, 100084, PR China; Key Laboratory of Regional Environment and Eco-Remediation, Ministry of Education, Shenyang University, Shenyang, 110044, China.
Key Laboratory of Regional Environment and Eco-Remediation, Ministry of Education, Shenyang University, Shenyang, 110044, China.
Chemosphere. 2022 Feb;289:133156. doi: 10.1016/j.chemosphere.2021.133156. Epub 2021 Dec 2.
We compared the influences of AlO and SiO on a traditional VO-MoO/TiO for the simultaneous removal of NO and chlorobenzene (CB). The AlO doping catalyst considerably broadens the active temperature window with higher NO reduction and CB oxidation efficiencies than the SiO doping one and the VO-MoO/TiO. Furthermore, its resistance to SO was preserved and the quantities of polychlorinated byproducts also decreased. The increase in activity at low temperatures could be due to the promotion of vanadia reducibility via interactions between VO and AlO. Moreover, the high temperature activity could be due to the additional surface acidities provided by AlO, in which the Lewis acid sites played the predominant role in both NH adsorptions and CB de-chlorination compared to the Brønsted acid sites. Finally, we proposed that AlO is an effective addition for vanadia-based catalyst in NO and CB simultaneous removal from stationary sources.
我们比较了 AlO 和 SiO 对传统 VO-MoO/TiO 的影响，以实现同时去除 NO 和氯苯 (CB)。AlO 掺杂催化剂大大拓宽了活性温度窗口，与 SiO 掺杂和 VO-MoO/TiO 相比，具有更高的 NO 还原和 CB 氧化效率。此外，它对 SO 的抗性得以保留，多氯副产物的数量也减少了。低温下活性的增加可能是由于 VO 和 AlO 之间的相互作用促进了 vanadia 的还原性。此外，高温活性可能是由于 AlO 提供的额外表面酸度所致，其中 Lewis 酸位在 NH 吸附和 CB 脱氯方面比 Brønsted 酸位起主要作用。最后，我们提出 AlO 是基于 vanadia 的催化剂在固定源同时去除 NO 和 CB 的有效添加剂。
