Catalytic Reduction of NO with NH3 over V2O5-MnOX/TiO2-Carbon Nanotube Composites

Li, Qian; Yang, Hangsheng; Nie, Anmin; Fan, Xiaoyu; Zhang, Xiaobin

doi:10.1007/s10562-011-0622-2

Cited by 33 publications

(17 citation statements)

References 49 publications

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“…Up to now, the extensively studied method of NO removal is selective catalytic reduction (SCR) of NO with ammonia [3][4][5] , V-based catalysts V 2 O 5 -WO 3 /TiO 2 [6] are used as a common catalyst in the NH 3 -SCR process, which shows high catalytic activity and selectivity. However, some inevitable problems exist in the process of NH 3 -SCR, such as the high working temperature, the toxicity of vanadium-species [7] and low N 2 selectivity in high temperature range.…”

Section: Introductionmentioning

confidence: 99%

Activated carbon fibers loaded with MnO2 for removing NO at room temperature

Wang

He-nian

Huang

et al. 2014

Chemical Engineering Journal

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MnO 2 loaded on activated carbon fibers (MnO 2 @ACF) were successfully prepared using co-precipitation methods, the as-prepared MnO 2 @ACF were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), temperature-programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS) and N 2 adsorption/desorption analysis. The results showed that MnO 2 particles were highly dispersed with a strong interaction between MnO 2 particles and ACFs. MnO 2 loaded on ACF can promote the catalytic oxidation efficiency of NO into NO 2 remarkably, the loaded amount of MnO 2 has an obvious effect on the NO oxidation efficiency over MnO 2 @ACF. The optimal amount of MnO 2 for MnO 2 @ACF is 3.64 wt%, and the oxidation efficiency of NO was increased from 20.1% over A15 to 30.6% over MnO 2 @ACF.

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Section: Introductionmentioning

confidence: 99%

Activated carbon fibers loaded with MnO2 for removing NO at room temperature

Wang

He-nian

Huang

et al. 2014

Chemical Engineering Journal

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“…There were no observable peaks from the carbon components. For the T‐GR9 sample, the (001) peak of GO might have been shifted to 25.7° owing to the reduction of the oxygenated group during the solvothermal process,14d and it overlapped with the (101) peak of TiO 2 at 25.4° 10b. 20 This was a good indication that GO had been reduced to GR successfully during the solvothermal process.…”

Section: Resultsmentioning

confidence: 90%

Synthesis of Carbon Materials–TiO₂ Hybrid Nanostructures and Their Visible‐Light Photo‐catalytic Activity

Bian

Zhang

et al. 2014

ChemPlusChem

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IntroductionEnergy crisis and environmental deterioration are by-products of industrialisation. As a remedy, photo-catalysis has been widely employed to deal with air and water treatment. [1] It is known that anatase titania (TiO 2 ) is a promising photo-catalytic candidate material owing to its photo-stability, non-toxicity, relatively high catalytic performance and low cost. [2] However, anatase TiO 2 suffers from rapid electron-hole recombination, which leads to low photo-catalytic efficiency. [3] Moreover, TiO 2 has a wide band gap (3.2 eV) and is only active under UV-light irradiation, although UV radiation only makes up 5 % of normal sunlight. [4] To use sunlight to activate TiO 2 , measures have to be taken to broaden visible-light harvesting and retard the recombination process of electron-hole pairs for anatase after their generation. Some approaches such as non-metal doping, [5] metal doping, [6] coupled semiconductor [7] and noblemetal-based composites [2a, 8] have been investigated. In addition, mesoporous hollow TiO 2 structures with high crystallinity and surface areas, [2b,c] TiO 2 nanorod, [1b] and TiO 2 nanotubes, [9] were prepared in an effort to enhance mass transfer between the active sites and to favour isolation between active sites of the catalyst and the dye molecules.Recently, photo-catalysts containing carbon components have attracted a great deal of attention owing to their superior adsorption ability for pollutants in addition to their photo-catalytic activities. [4,10] For example, an activated carbon (AC) component with a porous structure can provide a large specific surface area for adsorption and, at the same time, serves as a support to the catalyst. [11] This type of product will increase catalyst adsorption performance to pollutants as well as facilitate mass transfer during the photo-catalytic reaction. Another example is that owing to the unique electric and structural properties of carbon nanotubes (CNTs), which have high conductivity, large specific surface area and strong adsorption capability. CNTs were considered to be suitable dopants for the catalyst to enhance photo-catalysis. [4] One interesting report was that CNTs had a large electron-storage capacity (one electron per 32 carbon atoms), and thus, could serve as excellent electron acceptors. [12] Xu et al. synthesised CNT/TiO 2 nanocomposites, which were utilised to degrade gas-phase benzene, by using a simple impregnation method. [13] The functions of CNTs were multi-fold, for example, one CNT could act as electron traps to prolong the lifetime of the created electron-hole pairs and the other acted a dispersing agent to control the morphology of the nanocomposite. The formation of TiÀC and TiÀ OÀC bonds on the surface of CNT-TiO 2 film would narrow the Activated carbon, graphene, carbon nanotubes and fullerene were incorporated into TiO 2 by a solvothermal approach and thermal annealing to produce carbon materials-TiO 2 hybrid nanostructures. The carbon materials-TiO 2 products were characterised by using SEM, ...

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“…4. The peak at 470 °C for the VOx/TiO2 catalyst can be assigned to the reduction of V 5+ to V 3+ [18]. The peak observed above 625 °C is ascribed to unsupported V2O5, and could arise from uneven distribution of V on the TiO2 support.…”

Section: H2-tpr Analysismentioning

confidence: 95%

Performance of Cr-doped vanadia/titania catalysts for low-temperature selective catalytic reduction of NOx with NH3

Yang

Huang

Chen

et al. 2015

Chinese Journal of Catalysis

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Catalytic Reduction of NO with NH3 over V2O5-MnOX/TiO2-Carbon Nanotube Composites

Cited by 33 publications

References 49 publications

Activated carbon fibers loaded with MnO2 for removing NO at room temperature

Activated carbon fibers loaded with MnO2 for removing NO at room temperature

Synthesis of Carbon Materials–TiO₂ Hybrid Nanostructures and Their Visible‐Light Photo‐catalytic Activity

Performance of Cr-doped vanadia/titania catalysts for low-temperature selective catalytic reduction of NOx with NH3

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Catalytic Reduction of NO with NH3 over V2O5-MnOX/TiO2-Carbon Nanotube Composites

Cited by 33 publications

References 49 publications

Activated carbon fibers loaded with MnO2 for removing NO at room temperature

Activated carbon fibers loaded with MnO2 for removing NO at room temperature

Synthesis of Carbon Materials–TiO2 Hybrid Nanostructures and Their Visible‐Light Photo‐catalytic Activity

Performance of Cr-doped vanadia/titania catalysts for low-temperature selective catalytic reduction of NOx with NH3

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Synthesis of Carbon Materials–TiO₂ Hybrid Nanostructures and Their Visible‐Light Photo‐catalytic Activity