Hwang Yujin, Kim Young-Min, Lee Jung Eun, Rhee Gwang Hoon, Show Pau-Loke, Andrew Lin Kun-Yi, Park Young-Kwon
School of Environmental Engineering, University of Seoul 02504, Republic of Korea.
Department of Environmental Engineering, Daegu University, Gyeongsan 38453, Republic of Korea.
Environ Res. 2023 Feb 15;219:115071. doi: 10.1016/j.envres.2022.115071. Epub 2022 Dec 14.
To remove harmful volatile organic compounds (VOCs) including 2-butanone (methyl ethyl ketone, MEK) emitted from various industrial plants is very important for the clean air. Also, it is worthwhile to recycle porous spent fluid catalytic cracking (SFCC) catalysts from various petroleum refineries in terms of reducing industrial waste and the reuse of discharged resources. Therefore, Mn and Mn-Cu added SFCC (Mn/SFCC and Mn-Cu/SFCC) catalysts were prepared to compare their catalytic efficiencies together with the SFCC catalyst in the ozonation of 2-butanone. Since the SFCC-based catalysts have a structure similar to that of zeolite Y (Y), the Mn-loaded zeolite Y catalyst (Mn/Y) was also prepared to compare its activity for the removal of 2-butanone and ozone to that of the SFCC-based ones at room temperature. Among the five catalysts of this study (Y, Mn/Y, SFCC, Mn/SFCC, and Mn-Cu/SFCC), the Mn-Cu/SFCC and Mn/SFCC catalysts showed the better catalytic decomposition activity than the others. The increased distributions of the Mn species and the O sites in Mn/SFCC and Mn-Cu/SFCC catalysts which could supply more available active sites for the 2-butanone and ozone removal would enhance the catalytic activity of them.
去除各种工业工厂排放的包括2-丁酮（甲基乙基酮，MEK）在内的有害挥发性有机化合物（VOCs）对于清洁空气非常重要。此外，从各种石油精炼厂回收多孔废流化催化裂化（SFCC）催化剂，在减少工业废物和再利用排放资源方面是值得的。因此，制备了添加Mn和Mn-Cu的SFCC（Mn/SFCC和Mn-Cu/SFCC）催化剂，以比较它们与SFCC催化剂在2-丁酮臭氧化反应中的催化效率。由于基于SFCC的催化剂具有与Y型沸石（Y）相似的结构，还制备了负载Mn的Y型沸石催化剂（Mn/Y），以比较其在室温下去除2-丁酮和臭氧的活性与基于SFCC的催化剂的活性。在本研究的五种催化剂（Y、Mn/Y、SFCC、Mn/SFCC和Mn-Cu/SFCC）中，Mn-Cu/SFCC和Mn/SFCC催化剂表现出比其他催化剂更好的催化分解活性。Mn/SFCC和Mn-Cu/SFCC催化剂中Mn物种和O位点分布的增加，可为去除2-丁酮和臭氧提供更多可用的活性位点，这将提高它们的催化活性。
