In situ FT-IR study and evaluation of toluene abatement in different plasma catalytic systems over metal oxides loaded γ-Al2O3

Xu, Weicheng; Wang, Ni; Chen, Yangda; Chen, Jiandong; Xu, Xiaoxin; Yu, Lian; Chen, Limin; Wu, Junliang; Fu, Mingli; Zhu, Ai‐Min; Ye, Daiqi

doi:10.1016/j.catcom.2016.06.004

Cited by 65 publications

(12 citation statements)

References 23 publications

(19 reference statements)

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“…The peaks at 1700–1680 cm –1 are assigned to the CO stretching vibration of benzaldehyde . Meanwhile, bands at 1650–1610, 1550, and 1350–1300 cm –1 are attributed to the characteristic peaks of benzoic acid. , It inferred that the primary oxidation byproducts were benzaldehyde, benzoic acid, maleic anhydride, and some nitrophenol in our experimental system. Some byproducts were below the detection limit of FTIR; it did not indicate that no other byproducts were produced on the basis of these experimental phenomena.…”

Section: Resultsmentioning

confidence: 64%

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Performance and Pathways of Toluene Degradation over Co/13X by Different Processes Based on Nonthermal Plasma

Yang

Tang

et al. 2017

Energy Fuels

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Performance and pathways of toluene degradation by three types of processes based on nonthermal plasma, including nonthermal plasma alone (NTP), plasma catalytic (PC), and adsorption-plasma catalytic processes (APC), were compared, which took into account toluene removal efficiency (ηr), mineralization efficiency (ηM), CO2 selectivity (ηC), and energy efficiency (ηE). Co/13X is a catalyst prepared by the impregnation method. NTP combined with the catalyst exhibited good oxidation performance. Also, ηM and ηC were further improved, and ηE was greatly reduced by the APC process. The deactivation of the catalyst was the main drawback for the PC and APC processes, and it was detected by CO2-TPD, FTIR, BET, and element analysis. The APC process was more suitable for low-concentrations VOC. The ηr, ηM, and ηC were enhanced with discharge power and residence time increased. Byproducts of toluene degradation were different between NTP and that combined with catalyst. Toluene degradation in NTP was mainly caused by energetic electrons and reactive species; methyl and an aromatic ring were first destructed and subsequently oxidized. As for NTP combined with the catalyst, toluene was first oxidized and then broken, which mainly depended on active oxygen species.

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Section: Resultsmentioning

confidence: 64%

“…Then, aromatic byproducts collided with electrons and reactive species and finally oxidized into CO 2 and H 2 O. According to the identified byproducts in the literature, ,,,,− the possible pathways of toluene degradation by NTP may be as presented in Figure .…”

Section: Resultsmentioning

confidence: 99%

Performance and Pathways of Toluene Degradation over Co/13X by Different Processes Based on Nonthermal Plasma

Yang

Tang

et al. 2017

Energy Fuels

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“…(Wang et al, 2017). Among them, nonthermal plasma (NTP) is a very promising technology for the reduction of CVOCs due to its unique advantages of easy operation (fast ignition/response) and moderate energy costs at room temperature and atmospheric pressure (Xu et al, 2016). NTP can generate highly reactive species for promoting the degradation of CVOCs, such as energetic electrons, radicals, photons, ozone and OH radicals, etc.…”

Section: Introductionmentioning

confidence: 99%

The influence of relative humidity on double dielectric barrier discharge plasma for chlorobenzene removal

Nikiforov

et al. 2021

Journal of Cleaner Production

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“…Among them, the acetone species are characterized by the ν (C=O) at 1731 cm −1 , δ (CH 3 ) at 1441–1371 cm −1 and δ (C-C) at 1161 cm −1 [ 29 , 30 ]. As the reaction time continues, the intensity of the bands attributed to olefins (885 cm −1 ), formic acid (1093 and 1121 cm −1 ), oxalic acid (1302 cm −1 ), alcohol (1343 cm −1 ), and CO (2126 and 2096 cm −1 ) continuously increases on the spectra [ 16 , 31 , 32 ]. Narengerile’s research results indicate that HCOOH, HCHO, and soot are the main organic byproducts when acetone is decomposed by direct current (DC) plasma [ 18 ].…”

Section: Resultsmentioning

confidence: 99%

Effects of BTEX on the Removal of Acetone in a Coaxial Non-Thermal Plasma Reactor: Role Analysis of the Methyl Group

Hou

Xie

et al. 2018

Molecules

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The removal of acetone and benzene series (BTEX) under individual and concurrent conditions is carried out in a coaxial nonthermal plasma (NTP) reactor. The results show that the benzene series has a significant negative impact on acetone conversion and CO2 selectivity under NTP treatment. Furthermore, it is found that p-xylene significantly promotes COx selectivity under co-treatment with acetone because of greater CO generation. Based on the results of transient FTIR, MS, and GC-MS, it is seen that quantities of formic acid, formaldehyde, and ring-opening byproducts from benzene series decomposition are reduced, while quantities of aromatic byproducts with carboxyl, phenolic, and aldehyde groups on the benzene ring increase under coexistence conditions. With the help of theoretical calculation and kinetic analysis, hydrogen abstraction from the methyl group and active hydroxyl radical consumption are proposed as critical factors in the BTEX inhibition effect on acetone degradation.

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In situ FT-IR study and evaluation of toluene abatement in different plasma catalytic systems over metal oxides loaded γ-Al2O3

Cited by 65 publications

References 23 publications

Performance and Pathways of Toluene Degradation over Co/13X by Different Processes Based on Nonthermal Plasma

Performance and Pathways of Toluene Degradation over Co/13X by Different Processes Based on Nonthermal Plasma

The influence of relative humidity on double dielectric barrier discharge plasma for chlorobenzene removal

Effects of BTEX on the Removal of Acetone in a Coaxial Non-Thermal Plasma Reactor: Role Analysis of the Methyl Group

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