Selective catalytic reduction of nitric oxide with ammonia over zirconium-doped copper/ZSM-5 catalysts

Bin, Feng; Chen, Song; Lv, Gang; Song, Jinou; Wu, Shaohua; Li, Xiaodong

doi:10.1016/j.apcatb.2013.12.052

Cited by 126 publications

(70 citation statements)

References 51 publications

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“…40 Cu and Fe components were better dispersed in the Cu-Fe-Zr sample than in the Cu-Fe sample, which was attributed to the presence of ZrO 2 . 41 Thus, more unsaturated coordination metal centers were present, which formed strong bonds with H 2 . 38,40,42 Furthermore, the degree of H 2 adsorption corresponded to catalytically useful adsorption strength.…”

Section: Resultsmentioning

confidence: 99%

Experimental and theoretical study of the intrinsic kinetics for dimethyl ether synthesis from CO₂ over Cu–Fe–Zr/HZSM‐5

Qin

et al. 2015

AIChE Journal

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An intrinsic kinetics model was established for CO 2 hydrogenation to dimethyl ether (DME) with a Cu-Fe-Zr/HZSM-5 catalyst based on H 2 /CO 2 adsorption, simulation, and calculation of methanol synthesis from CO 2 intermediates and experimental data. H 2 /CO 2 -temperature programmed desorption results show a dissociative H 2 adsorption on Cu site; CO 2 was linearly adsorbed on Fe 3 O 4 weak base sites of the catalyst; the adsorbing capacity of H 2 and CO 2 increased after Zr-doping. Density functional theory analysis of methanol synthesis from CO 2 and H 2 revealed a formate pathway. Methanol synthesis was the rate-limiting step (173.72 kJÁmol 21 activation energy) of the overall CO 2 hydrogenation reaction, and formation of H 2 CO is the rate-determining step of methanol synthesis. Relative errors between calculated and experimental data of partial pressures of all components were less than 10%. Therefore, the kinetics model may be an accurate descriptor of intrinsic kinetics of CO 2 hydrogenation to DME.

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Section: Resultsmentioning

confidence: 99%

Experimental and theoretical study of the intrinsic kinetics for dimethyl ether synthesis from CO₂ over Cu–Fe–Zr/HZSM‐5

Qin

et al. 2015

AIChE Journal

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“…The nanoparticles and clusters of coinage metal are good catalysts to reduce the toxic pollutants such as CO, NO x , and hydrocarbons [15][16][17][18][19][20][21][22]. The reduction of NO x with CO in the absence of oxygen yields N 2 as the main product [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…The reduction of NO x with CO in the absence of oxygen yields N 2 as the main product [15][16][17][18]. The adsorption and desorption of N 2 on metal surface and clusters may play an important factor in understanding the catalytic mechanism.…”

Section: Introductionmentioning

confidence: 99%

Density functional study of molecular nitrogen adsorption on gold-copper and gold-silver binary clusters

et al. 2014

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Density functional theory calculations were performed to investigate the adsorption behaviors of nitrogen molecule on small bimetallic AunCum and AunAgm clusters, with n + m ≤ 5. In all cases the N2 forms a linear or quasi-linear M-N-N structure (M = Au, Cu or Ag). The adsorption energies of N2 on pure metal clusters follow the order CunN2 > AunN2 > AgnN2, which is due to the weaker orbital interaction between silver and N2. N2 prefers to bind to a copper atom in AunCumN2 complexes and prefers to bind to a silver atom in AunAgmN2 complexes. The combination of Cu atoms into Aun clusters makes the cluster more reactive toward N2 while the combination of Ag atoms into Aun clusters makes the cluster less reactive toward N2. The electrostatic interaction is strengthened while the back-donation from metal to N2 is reduced in bimetallic cluster nitrides, as compared to the mono cluster nitrides. The N-N stretching frequencies are all red-shifted upon adsorption and the M-N stretching frequencies are highly correlated to the atoms to which the N is attached.

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“…When transition metals are loaded on the ZSM-5 support, different species are present on the ZSM-5 support as isolated ions, metal oxide clusters, nano-size and large metal oxide particles [9]. Our interest in CO oxidation catalysts has concentrated on copper/cerium-based ZSM-5 zeolites owing to their high activity and thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Self-sustained combustion of carbon monoxide promoted by the Cu-Ce/ZSM-5 catalyst in CO/O 2 /N 2 atmosphere

Bin

Wei

et al. 2015

Applied Catalysis B: Environmental

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Selective catalytic reduction of nitric oxide with ammonia over zirconium-doped copper/ZSM-5 catalysts

Cited by 126 publications

References 51 publications

Experimental and theoretical study of the intrinsic kinetics for dimethyl ether synthesis from CO₂ over Cu–Fe–Zr/HZSM‐5

Experimental and theoretical study of the intrinsic kinetics for dimethyl ether synthesis from CO₂ over Cu–Fe–Zr/HZSM‐5

Density functional study of molecular nitrogen adsorption on gold-copper and gold-silver binary clusters

Self-sustained combustion of carbon monoxide promoted by the Cu-Ce/ZSM-5 catalyst in CO/O 2 /N 2 atmosphere

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Selective catalytic reduction of nitric oxide with ammonia over zirconium-doped copper/ZSM-5 catalysts

Cited by 126 publications

References 51 publications

Experimental and theoretical study of the intrinsic kinetics for dimethyl ether synthesis from CO2 over Cu–Fe–Zr/HZSM‐5

Experimental and theoretical study of the intrinsic kinetics for dimethyl ether synthesis from CO2 over Cu–Fe–Zr/HZSM‐5

Density functional study of molecular nitrogen adsorption on gold-copper and gold-silver binary clusters

Self-sustained combustion of carbon monoxide promoted by the Cu-Ce/ZSM-5 catalyst in CO/O 2 /N 2 atmosphere

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Experimental and theoretical study of the intrinsic kinetics for dimethyl ether synthesis from CO₂ over Cu–Fe–Zr/HZSM‐5

Experimental and theoretical study of the intrinsic kinetics for dimethyl ether synthesis from CO₂ over Cu–Fe–Zr/HZSM‐5