Copper oxide supported on carbon modified alumina as catalyst for reduction of NO with CO

Nickolov, R.; Stankova, Nelly B.; Христова, M.; Mehandjiev, D.

doi:10.1016/s0021-9797(03)00278-9

Cited by 17 publications

(12 citation statements)

References 24 publications

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“…15,18 Note that in some reports, carbon doped/coated catalysts were synthesized, while carbon was only used as the catalyst support and NH 3 as the reducing agent. 25,26 Since electroplating sludge contains various metal species and organic matters, its pyrolysis can generate metal/metal oxide/ carbon mixture, which would be a potential substitution for metal catalyst in NO x -SCR.…”

Section: ■ Introductionmentioning

confidence: 99%

Efficient Selective Catalytic Reduction of NO by Novel Carbon-doped Metal Catalysts Made from Electroplating Sludge

Zhang

et al. 2014

Environ. Sci. Technol.

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Electroplating sludges, once regarded as industrial wastes, are precious resources of various transition metals. This research has thus investigated the recycling of an electroplating sludge as a novel carbon-doped metal (Fe, Ni, Mg, Cu, and Zn) catalyst, which was different from a traditional carbon-supported metal catalyst, for effective NO selective catalytic reduction (SCR). This catalyst removed >99.7% NO at a temperature as low as 300°C. It also removed NO steadily (>99%) with a maximum specific accumulative reduced amount (MSARA) of 3.4 mmol/g. Gas species analyses showed that NO removal was accompanied by evolving N 2 and CO 2 . Moreover, in a wide temperature window, the sludge catalyst showed a higher CO 2 selectivity (>99%) than an activated carbon-supported metal catalyst. Structure characterizations revealed that carbon-doped metal was transformed to metal oxide in the sludge catalyst after the catalytic test, with most carbon (2.33 wt %) being consumed. These observations suggest that NO removal over the sludge catalyst is a typical SCR where metals/metal oxides act as the catalytic center and carbon as the reducing reagent. Therefore, our report probably provides an opportunity for high value-added utilizations of heavy-metal wastes in mitigating atmospheric pollutions.

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Section: ■ Introductionmentioning

confidence: 99%

Efficient Selective Catalytic Reduction of NO by Novel Carbon-doped Metal Catalysts Made from Electroplating Sludge

Zhang

et al. 2014

Environ. Sci. Technol.

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“…Finally, the results are discussed with respect to the rate-controlling character of the different elementary steps of the reaction system. An important point of catalysts obtaining for neutralizing of NO is the formation of the surface catalytic active complex (CAC) in which different ions take part as well as ions from the support [13][14][15]. Therefore, the choice of the synthesis method is of a great importance.…”

Section: Introductionmentioning

confidence: 99%

Sol-gel Ag + Pd/SiO2 as a catalyst for reduction of NO with CO

et al. 2006

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Mono -(Ag/SiO 2 , Pd/SiO 2 ) and bimetallic (Ag+Pd/SiO 2 ) catalysts have been obtained via sol-gel method from tetra-ethoxysilane (TEOS) and their activity in reduction of Nitric oxide (NO) with carbon monoxide (CO) has been investigated. The highest activity in the process of reduction of NO with CO possesses the sample Ag+Pd/SiO 2 . It has been found that the sol-gel method for preparation of bimetallic catalysts allows the formation of various catalytic active centers (CAC) which leads to high activity in reaction of NO reduction. The presence of Ag 2 O and PdO in these CAC allows the elimination of NO. The process of this elimination includes reduction of NO with CO at temperatures up to 200°C as well as direct decomposition of NO at higher temperatures.

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“…The major technology for reducing NOx emission from stationary sources is the selective catalytic reduction (SCR) of NOx by CO, H 2 , ammonia (NH 3 ) and H 2 S [2][3]. Although the established SCR process for stationary plants is based on the reduction of NOx by NH 3 , this technology still suffer some problems in handling of NH 3 due to format of ammonia nitrated and poison of catalyst [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Cu/SAB-15 as potential catalysts for SCR NOx by CO

Tseng

2010

2010 International Conference on Chemistry and Chemical Engineering

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Selective catalytic reduction (SCR) of nitrogen oxide (NO) technology has widely applied in a combustion process to decline the concentration of NO due to its impact on the environments concerns. In this study, mesoporous SBA-15 was used as support material to load Cu catalyst to undergo the DeNOx reaction by CO. Cu/SBA-15 catalyst were prepared by polyol method and investigated by XRD, TEM and FTIR. The results show that the NO conversion over Cu/SBA-15 catalysts is about 20 % at 400 , which is higher than the values for other Cu-based catalysts supported on Al 2 O 3 support material.

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Copper oxide supported on carbon modified alumina as catalyst for reduction of NO with CO

Cited by 17 publications

References 24 publications

Efficient Selective Catalytic Reduction of NO by Novel Carbon-doped Metal Catalysts Made from Electroplating Sludge

Efficient Selective Catalytic Reduction of NO by Novel Carbon-doped Metal Catalysts Made from Electroplating Sludge

Sol-gel Ag + Pd/SiO2 as a catalyst for reduction of NO with CO

Mesoporous Cu/SAB-15 as potential catalysts for SCR NOx by CO

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