Catalytic N2O decomposition on Pr0.8Ba0.2MnO3 type perovskite catalyst for industrial emission control

Kumar, Suresh; Vinu, Ajayan; Šubrt, Ján; Bakardjieva, Snejana; Rayalu, Sadhana; Teraoka, Yasutake; Labhsetwar, Nitin

doi:10.1016/j.cattod.2012.06.015

Cited by 56 publications

(54 citation statements)

References 38 publications

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“…For these reasons, researchers have paid a great deal of attention to N 2 O because of its possible environmental impacts. There are many methods that can be used to reduce the emission concentration of N 2 O, such as selective catalytic reduction with hydrocarbons (HC-SCR), thermal decomposition, selective adsorption, and direct catalytic N 2 O decomposition into N 2 and O 2 [5]. Among various types of abatement technologies, direct catalytic decomposition is economical and does not produce CO 2 , and becomes one of the most attracting methods.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Decomposition of N2O over Cu–Zn/ZnAl2O4 Catalysts

et al. 2017

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Abstract:The catalytic decomposition of N 2 O was investigated over Cu-Zn/ZnAl 2 O 4 catalysts in the temperature range of 400-650 • C Catalytic samples have been prepared by wet impregnation method. Prepared catalysts were characterized using several techniques like BET surface area, X-ray diffraction (XRD), and Scanning electron microscopy (SEM). The Cu-Zn/ZnAl 2 O 4 showed higher catalytic performance along with long term stability during N 2 O decomposition. The Cu-Zn/ZnAl 2 O 4 catalysts yielded 100% N 2 O conversion at 650 • C. The Cu-Zn/ZnAl 2 O 4 catalysts are promising for decrease this strong greenhouse gas in the chemical industry.

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Section: Introductionmentioning

confidence: 99%

Catalytic Decomposition of N2O over Cu–Zn/ZnAl2O4 Catalysts

et al. 2017

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“…The role of perovskite-type oxides for NO decomposition can be explored by O 2 -TPD analysis because it provides the information on oxygen nonstoichiometry of substituted perovskite (Kumar et al, 2012). Typically, two kinds of oxygen desorption peaks are observed in the O 2 -TPD process and can be denoted as α oxygen and β oxygen, respectively.…”

Section: Characterization Of the Catalystsmentioning

confidence: 99%

Enhancement of nitric oxide decomposition efficiency achieved with lanthanum-based perovskite-type catalyst

Pan

Chen

Sheng

et al. 2016

Journal of the Air & Waste Management Association

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Direct decompositions of nitric oxide (NO) by La 0.7 Ce 0.3 SrNiO 4 , La 0.4 Ba 0.4 Ce 0.2 SrNiO 4 , and Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 are experimentally investigated, and the catalysts are tested with different operating parameters to evaluate their activities. Experimental results indicate that the physical and chemical properties of La 0.7 Ce 0.3 SrNiO 4 are significantly improved by doping with Ba and partial substitution with Pr. NO decomposition efficiencies achieved with La 0.4 Ba 0.4 Ce 0.2 SrNiO 4 and Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 are 32% and 68%, respectively, at 400°C with He as carrier gas. As the temperature is increased to 600°C, NO decomposition efficiencies achieved with La 0.4 Ba 0.4 Ce 0.2 SrNiO 4 and Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 , respectively, reach 100% with the inlet NO concentration of 1000 ppm while the space velocity is fixed at 8000 hr −1 . Effects of O 2 , H 2 O (g) , and CO 2 contents and space velocity on NO decomposition are also explored. The results indicate that NO decomposition efficiencies achieved with La 0.4 Ba 0.4 Ce 0.2 SrNiO 4 and Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 , respectively, are slightly reduced as space velocity is increased from 8000 to 20,000 hr −1 at 500°C. In addition, the activities of both catalysts (La 0.4 Ba 0.4 Ce 0.2 SrNiO 4 and Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 ) for NO decomposition are slightly reduced in the presence of 5% O 2 , 5% CO 2 , or 5% H 2 O (g) . For durability test, with the space velocity of 8000 hr −1 and operating temperature of 600°C, high N 2 yield is maintained throughout the durability test of 60 hr, revealing the long-term stability of Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 for NO decomposition. Overall, Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 shows good catalytic activity for NO decomposition. Implications: Nitrous oxide (NO) not only causes adverse environmental effects such as acid rain, photochemical smog, and deterioration of visibility and water quality, but also harms human lungs and respiratory system. Pervoskite-type catalysts, including La 0.7 Ce 0.3 SrNiO 4 , La 0.4 Ba 0.4 Ce 0.2 SrNiO 4 , and Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 , are applied for direct NO decomposition. The results show that NO decomposition can be enhanced as La 0.7 Ce 0.3 SrNiO 4 is substituted with Ba and/or Pr. At 600°C, NO decomposition efficiencies achieved with La 0.4 Ba 0.4 Ce 0.2 SrNiO 4 and Pr 0.4 Ba 0.4 Ce 0.2 SrNiO 4 reach 100%, demonstrating high activity and good potential for direct NO decomposition. Effects of O 2 , H 2 O (g) , and CO 2 contents on catalytic activities are also evaluated and discussed. PAPER HISTORY

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“…Ran et al examined the effect of Sr and Ce doping in PrMnO 3 for the oxidation of CO and C 3 H 8, and reduction of NO under simulated auto-exhaust conditions [12]. In a recent article from our group, we have reported the excellent catalytic properties of Ba substituted PrMnO 3 catalyst for N 2 O decomposition [13]. Several articles have been reported in the literature on promotional effect of different metal ions on the metal oxides and mixed oxides for the low temperature CO and PM/soot oxidation reactions [14][15][16][17].…”

Section: Introductionmentioning

confidence: 96%