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您的检索式：作者名="Jonathan Outin"
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| 1 | Catalytic decomposition performance for O_3 and NO_2 in humid indoor air on a MnO_x/Al_2O_3 catalyst modified by a cost-effective chemical grafting method显示文摘Processes based on non-thermal plasma(NTP) for indoor air treatment inevitably lead to the formation of toxic by-products such as ozone(O_3) and nitrogen oxides(NO_x). Adding a step of heterogeneous catalysis in series with NTP could allow for the decomposition of the by-products. Therefore, different catalysts were developed based on transition metal oxides, such as NiOx, CoOxand MnO_xwith different weight percentage 1, 5 and 10 wt.%,deposited on a γ-Al_2O_3 support. The O_3 removal efficiency(ORE) and the NO_xremoval efficiency(NRE) were very encouraging in dry air: about 65% and 80%, respectively, by using2 g 5 wt.% MnO_x/Al_2O_3 catalyst under the experimental conditions. However, strongly negative effects of relative humidity(RH) on the catalytic decomposition performance were observed. To overcome this limitation, the catalyst surface was modified to make it hydrophobic using a cost-effective chemical grafting method. This treatment consisted in impregnating the 5 wt.% MnO_x/Al_2O_3 catalyst with different trichloro(alkyl)silanes(TCAS).The effects of different linker lengths and amounts of TCAS for the hydrophobicity and the decomposition performance of surface-modified catalysts under humid conditions were investigated. Our results show that the surface-modified catalyst with the shortest linker and 0.25 mmol/gcatof modifying agent represents the best catalytic decomposition performance for O_3. Its ORE is 41% at 60% RH, which is twice that of the non-modified catalyst. | Longwen Chen Michel Ondarts Jonathan Outin Yves Gonthier Evelyne Gonze | 2018 | Journal of Environmental Sciences2018，30，12： | 3 |
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