Low temperature catalytic combustion of 1,2-dichlorobenzene over CeO2–TiO2 mixed oxide catalysts

Deng, Wei; Dai, Qiguang; Lao, Yijie; Shi, Bingbing; Wang, Xingyi

doi:10.1016/j.apcatb.2015.07.053

Cited by 178 publications

(102 citation statements)

References 78 publications

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“…The CO 2 generation efficiencies were 18.7% and 13.5% for AC-O and AC-NH 3 ·H 2 O at 330 • C, respectively, with the efficiency increasing sharply to 86.2% for AC-V. The selectivity to CO varied between 20% and 25% during the reaction from 240 to 330 • C for all three catalysts, which is consistent with previous reports [2]. As seen in Figure 3b, the by-product formation efficiencies at 330 • C were 4.6% and 0.84% for AC-O and AC-V, respectively, and it was as high as 64.3% for AC-NH 3 ·H 2 O.…”

Section: Catalytic Selectivity and By-product Analysissupporting

confidence: 80%

Section: Introductionmentioning

confidence: 90%

“…This result may reflect poisoning of these noble metal-based catalysts as a result of their low stability toward chlorine [2]. The decrease of o-CP with the other four types of metal catalysts began appreciably at 240 • C. At 330 • C, the o-CP conversions for AC-V, AC-Co, AC-Ce, and AC-Mn were 93.2%, 82.8%, 80.2%, and 65.3%, respectively, with corresponding T 50 values of 308, 309, 288, and 315 • C, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Dioxins collectively refer to polychlorinated dibenzofurans (PCDFs) and polychlorinated dibenzodioxins (PCDDs) [1,2]. Dioxins rank first among the world's most toxic compounds known and have been titled as the "poisons of the century" [3].…”

Section: Introductionmentioning

confidence: 99%

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Catalytic Degradation of Ortho-Chlorophenol Using Activated Carbon Modified by Different Methods

et al. 2018

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Abstract:The performance of activated carbon (AC) modified by different methods was compared for its catalytic degradation of ortho-chlorophenol (o-CP). For the chemically treated AC, the catalytic effect of AC-NH 3 ·H 2 O was superior to the other catalysts examined, having an o-CP removal efficiency of 82.2% at 330 • C. For the metal-modified catalysts, AC-V and AC-Co showed similar removal performances of 93.2% at 330 • C. N 2 adsorption-desorption isotherms, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and gas chromatography-mass spectrometry (GC-MS) analyses were used to characterize the reaction products, and different reaction mechanisms were proposed for both AC-NH 3 ·H 2 O and AC-V according to the results. Complete oxidative degradation of o-CP was achieved by AC-V, with AC-NH 3 ·H 2 O leading to the formation of additional dioxins. It can be deduced that a risk of dioxin synthesis and escape during the regeneration process is possible when nitrogen-modified carbon is used in selective catalytic reduction (SCR) denitrification reactions, especially in the presence of chlorine atoms, benzene rings, and oxygen.

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Section: Catalytic Selectivity and By-product Analysissupporting

confidence: 80%

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Catalytic Degradation of Ortho-Chlorophenol Using Activated Carbon Modified by Different Methods

et al. 2018

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“…To extend the photo-response region of TiO 2 from the UV to visible region and to overcome this electron-hole recombination, some different methods have been applied, such as doping with Nd, Cu, Fe and Ag, [5][6][7][8][9] noble metal deposition, 10-13 sensitization, 14 composite formation, 15 and the coupling of TiO 2 with other metal oxides. [16][17][18][19][20] Among them, ferric oxide is known to have a narrow band gap of 2.2 eV and can be used as a visible light photocatalyst in industrial applications due to its low cost, non-toxicity and high chemical stability. 21 Fe 2 O 3 modified TiO 2 was investigated extensively for its potential application in degradation of organic pollutants.…”

Section: Introductionmentioning

confidence: 99%