室温下 Ru-Mn/脱硅纳米孔 H-Zeolite Socony Mobil-5 上臭氧催化氧化甲苯。
Catalytic Oxidation of Toluene with Ozone Over the Ru-Mn/Desilicated Nanoporous H-Zeolite Socony Mobil-5 at Room Temperature.
机构信息
School of Environment Engineering, University of Seoul, Seoul, 02504, Republic of Korea.
Department of Environmental Education, Mokpo National University, Mokpo, 58554, Korea.
出版信息
J Nanosci Nanotechnol. 2021 Jul 1;21(7):3868-3871. doi: 10.1166/jnn.2021.19194.
In this study, the effect of Ru-Mn bimetallic catalysts in combination with a zeolite support on the removal of toluene in the presence of ozone at room temperature was investigated. Desili-cated HZSM-5 (DZSM) was fabricated and applied as a Ru-Mn support for the removal of toluene (100 ppm) in the presence of ozone (1000 ppm) at room temperature. The surface area, pore volume, and average pore size of Ru-Mn with a DZSM support (RuMn/DZSM) were measured and compared with those of Ru-Mn/HZSM-5 (RuMn/HZSM). The pore size of RuMn/DZSM (69 Å) was much larger than that of RuMn/HZSM-5 (5.5 Å). In addition, the pore volumes of RuMn/DZSM and RuMn/HZSM were 0.64 and 0.25 cm³/g, respectively. Furthermore, the ratios of Mn³+/Mn⁴+ and O/O of RuMn/DZSM were larger than those of RuMn/HZSM-5. The removal efficiency of toluene of RuMn/DZSM was higher than that of RuMn/HZSM due to its larger pore volume, pore size, and the increased ratios of Mn³+/Mn⁴+ and O/O.
在这项研究中，研究了在室温下臭氧存在的情况下，Ru-Mn 双金属催化剂与沸石载体结合对甲苯去除的影响。制备了脱硅 HZSM-5（DZSM）并将其用作 Ru-Mn 载体，用于在室温下臭氧（1000 ppm）存在的情况下去除甲苯（100 ppm）。测量了 Ru-Mn 与 DZSM 载体（RuMn/DZSM）的比表面积、孔体积和平均孔径，并与 Ru-Mn/HZSM-5（RuMn/HZSM）的比表面积、孔体积和平均孔径进行了比较。RuMn/DZSM 的孔径（69 Å）远大于 RuMn/HZSM-5（5.5 Å）。此外，RuMn/DZSM 和 RuMn/HZSM 的孔体积分别为 0.64 和 0.25 cm³/g。此外，RuMn/DZSM 的 Mn³+/Mn⁴+和 O/O 比值大于 RuMn/HZSM-5。由于 RuMn/DZSM 的孔体积、孔径较大，Mn³+/Mn⁴+和 O/O 比值增加，因此 RuMn/DZSM 的甲苯去除效率高于 RuMn/HZSM。
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