A practical scale evaluation of sulfated V2O5/TiO2 catalyst from metatitanic acid for selective catalytic reduction of NO by NH3

Lee, In-Young; Kim, Dong-Wha; Lee, Jung Bin; Yoo, Kyong-Ok

doi:10.1016/s1385-8947(02)00018-9

Cited by 26 publications

(8 citation statements)

References 11 publications

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“…in out in (17) where C in and C out with unit of mg·m −3 were the NO concentration in the inlet and outlet gas flow, respectively. 3.2.1.…”

Section: Methodsmentioning

confidence: 99%

“…8−15 The most widely used technique is selective catalytic reduction (SCR) process, by using which high treatment efficiency (above 85%) can be obtained and the reaction product is harmless N 2 . 16,17 This approach, however, bears shortcomings such as use of high temperature, catalysts deactivation, ammonia escape and expensive operation costs. 18−20 Another approach that is of research and application interest is wet process by adding Fe(II)(EDTA) (EDTA, ethylenediaminetetraacetate) into the scrubbing solution to improve the solubility of NO via formation of Fe(II)(EDTA)(NO).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spray Absorption and Electrochemical Reduction of Nitrogen Oxides from Flue Gas

Guo

Sun

Wang

et al. 2013

Environ. Sci. Technol.

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This work developed an electrochemical reduction system which can effectively scrub NO× from flue gas by using aqueous solution of Fe(II)(EDTA) (ethylenediaminetetraacetate) as absorbent and electrolyte. This new system features (a) complete decomposition of NOX to harmless N2; and (b) fast regeneration of Fe(II)(EDTA) through electrochemical reaction. The Fe(II)(EDTA) solution was recycled and reused continuously during entire process, and no harmful waste was generated. The reaction mechanism was thoroughly investigated by using voltammetric, chromatographic and spectroscopic approaches. The operating conditions of the system were optimized based on NOX removal efficiency. Approximately 98% NO removal was obtained at the optimal condition. The interference of SO2 in flue gas and the system operating stability was also evaluated.

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“…in out in (17) where C in and C out with unit of mg·m −3 were the NO concentration in the inlet and outlet gas flow, respectively. 3.2.1.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spray Absorption and Electrochemical Reduction of Nitrogen Oxides from Flue Gas

Guo

Sun

Wang

et al. 2013

Environ. Sci. Technol.

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“…loaded catalyst is the commercial catalyst that has been widely used in the past several decades (Lee et al, 2002). WO 3 or MoO 3 is added as additives to enhance the thermal stability (Choung et al, 2006), decelerate phase transition and loss of surface area to the commercial catalyst (Casagrande et al, 1999;Djerad et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

A CuO-V₂O₅/TiO₂Catalyst for the Selective Catalytic Reduction of NO with NH₃

Zhong

Zhang

et al. 2014

Combustion Science and Technology

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A series of CuO-V 2 O 5 /TiO 2 catalysts with different Cu contents were prepared by wet impregnation method and used in selective catalytic reduction of NO with NH 3 . The aim of this design was to improve the low-temperature selective catalytic reduction (SCR) performance and broaden the temperature window compared to V 2 O 5 /TiO 2 and CuO/TiO 2 . It was found that the NO conversion over Cu-V/Ti was greatly improved with V 2 O 5 /TiO 2 and CuO/TiO 2 . The catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), hydrogen temperature-programmed reduction (H 2 -TPR), temperature programmed desorption of ammonia or nitric oxide (NH 3 -TPD and NO-TPD). The results indicated that copper species had a good interaction with TiO 2 , vanadium species interacted with TiO 2 by copper species, thereby generating more V 4+ . This had led to the increasing of chemisorb oxygen, better reduction property, more surface acid sites, and improvement of NH 3 and NO adsorption capacity, all of these resulting in better NH 3 -SCR performance of 10Cu-V/Ti catalysts. Furthermore, the catalyst showed a good H 2 O and SO 2 resistance at activation temperature.

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“…At present the most widespread NO x reduction technology is the selective catalytic reduction (SCR) process, in which NO x are removed effectively [2,3]. However, it suffers from the shortcomings of high temperature, catalysts deactivation and operation costs [4][5][6].…”

Section: Introductionmentioning

confidence: 99%