Nguyen Van Toan, Nguyen Duc Ba, Mok Young Sun, Hossain Md Mokter, Saud Shirjana, Yoon Kyeong Hwan, Dinh Duy Khoe, Ryu Seungmin, Jeon Hyeongwon, Kim Seong Bong
Department of Chemical and Biological Engineering, Jeju National University, Jeju, Republic of Korea.
Department of Chemical and Biological Engineering, Jeju National University, Jeju, Republic of Korea.
J Hazard Mater. 2021 Aug 15;416:126162. doi: 10.1016/j.jhazmat.2021.126162. Epub 2021 May 21.
A method based on the corona discharge produced by high voltage alternating current (AC) and direct current (DC) over a Pd/γ-AlO catalyst supported on a honeycomb structure monolith was developed to eliminate ethyl acetate (EA) from the air at atmospheric pressure. The characteristics of the AC and DC corona discharge generated inside the honeycomb structure monolith were investigated by varying the humidity, gas hourly space velocity (GHSV), and temperature. The results showed that the DC corona discharge is more stable and easily operated at different operating conditions such as humidity, GHSV, and gas temperature compared to the AC discharge. At a given applied voltage, the EA conversion in the DC honeycomb catalyst discharge is, therefore, higher compared with that in the AC honeycomb catalyst discharge (e.g., 96% of EA conversion compared with approximately 68%, respectively, at 11.2 kV). These new results can open opportunities for wide applications of DC corona discharge combined with honeycomb catalysts to VOC treatment.
开发了一种基于高压交流电（AC）和直流电（DC）在蜂窝结构整体式载体负载的Pd/γ -Al₂O₃催化剂上产生电晕放电的方法，用于在大气压下从空气中消除乙酸乙酯（EA）。通过改变湿度、气体时空速（GHSV）和温度，研究了蜂窝结构整体式内部产生的交流和直流电晕放电特性。结果表明，与交流放电相比，直流电晕放电在诸如湿度、GHSV和气体温度等不同操作条件下更稳定且易于操作。因此，在给定的施加电压下，直流蜂窝催化剂放电中的EA转化率高于交流蜂窝催化剂放电中的转化率（例如，在11.2 kV时，EA转化率分别为96%和大约68%）。这些新结果为直流电晕放电与蜂窝催化剂结合在挥发性有机化合物（VOC）处理中的广泛应用开辟了机会。
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