A comparison study on non-thermal plasma-assisted catalytic reduction of NO by C3H6 at low temperatures between Ag/USY and Ag/Al2O3 catalysts

Li, Junhua; Ke, Rui; Li, Wei; Hao, Jiming

doi:10.1016/j.cattod.2007.06.001

Cited by 19 publications

(22 citation statements)

References 27 publications

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“…According to the advantage of NTP, the combination of NTP and HC-SCR has recently attracted much attention as a potential technology to remove NO x . Li et al (2007) reported that Ag=USY was almost inactive in C 3 H 6 -SCR, while it showed activities in NTP-assisted C 3 H 6 -SCR at 523 K. The conversion of NO x in excess of 90% was obtained at 623 K via plasma facilitated catalysis over In-doped g-alumina by Tran et al (2004).…”

Section: Introductionmentioning

confidence: 95%

Combination of Nonthermal Plasma and Low Temperature-C₃H₈-Selective Catalytic Reduction over Co-In/H-beta Catalyst for Nitric Oxide Abatement

Shi

Chen

et al. 2009

Environmental Engineering Science

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Nitric oxide (NO x ) abatement by a two-stage system composed of nonthermal plasma (NTP) followed by the selective catalytic reduction with C 3 H 8 (C 3 H 8 -SCR) over the Co-In=H-beta catalyst was investigated at a relativity low temperature range from 548 to 598 K. The combination system shows better synergy at low temperature. Optimum active temperature of Co-In=H-beta in the complex system is shifted from 648 to 598 K compared with that in C 3 H 8 -SCR. The highest NO x conversion is over 98%. In contrast to treatment by the NTP, the two-stage system converts mostly NO to nitrogen; without NO 2 , nitrogen-containing and organic components formed. The synergetic effect of the combination system is enhanced with the C 3 H 8 concentration and O 2 content.

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Section: Introductionmentioning

confidence: 95%

Combination of Nonthermal Plasma and Low Temperature-C₃H₈-Selective Catalytic Reduction over Co-In/H-beta Catalyst for Nitric Oxide Abatement

Shi

Chen

et al. 2009

Environmental Engineering Science

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“…Alternatives to thermally activated processes have recently been explored to enhance low temperature oper- ation, amongst which the non-thermal plasma activation of catalysts [1][2][3][4] which, in many cases,has been shown to provide high conversions for irreversible exothermic reactions. [1][2][3][4][5][6][7][8][9][10][11][12] Examples include decomposition of volatile organic compounds (VOCs) and hydrogenation reactions. [4][5][6][7][8][9]12,13] Nonthermal plasmas have also been widely used with endothermic processes such as reforming processes [14][15][16][17] leading to high H 2 and CO selectivities.…”

mentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12] Examples include decomposition of volatile organic compounds (VOCs) and hydrogenation reactions. [4][5][6][7][8][9]12,13] Nonthermal plasmas have also been widely used with endothermic processes such as reforming processes [14][15][16][17] leading to high H 2 and CO selectivities. [14][15][16] Sekine et al showed an enhancement in activity with increasing current on applying an electric field to the forward water-gas shift reaction when the catalyst was also heated to 423-873 K. [2] Thew ater-gas shift reaction has also been reported in close proximity of aplasma source,that is,post plasma catalysis,toenhance the hydrogen production following ap lasma activated ethanol reforming system.…”

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confidence: 99%

Non‐Thermal Plasma Activation of Gold‐Based Catalysts for Low‐Temperature Water–Gas Shift Catalysis

et al. 2017

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Non‐thermal plasma activation has been used to enable low‐temperature water‐gas shift over a Au/CeZrO4 catalyst. The activity obtained was comparable with that attained by heating the catalyst to 180 °C providing an opportunity for the hydrogen production to be obtained under conditions where the thermodynamic limitations are minimal. Using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), structural changes associated with the gold nanoparticles in the catalyst have been observed which are not found under thermal activation indicating a weakening of the Au−CO bond and a change in the mechanism of deactivation.

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“…Lately, non-thermal plasma based techniques have attracted significant attention for catalyst design and development [11][12][13][14][15][16][17][18][19][20][21]. Catalysts with unusual and highly advantageous catalytic properties including room temperature reduction, unusual metal particle structure and metal-support interactions, and enhanced selectivity and stability have been reported.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Al2O3 Supported Nickel Catalysts Derived from RF Non-thermal Plasma Technology

Jang¹,

Helleson²,

Shi³

et al. 2008

Top Catal

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Catalysts derived from non-thermal plasma techniques have previously shown unusual and highly advantageous catalytic properties including room temperature reduction, unusual metal particle structure and metalsupport interactions, and enhanced selectivity and stability. This study focuses on the characterization of Al 2 O 3 supported Ni catalysts derived from the RF non-thermal plasma technique with in-situ XRD, TPR-MS and STEM and on relating the results to the enhanced activity and stability of benzene hydrogenation. The results suggest that catalysts with plasma treatments before impregnation are relatively easier to be reduced and result in better activities under mild reduction conditions. These plasma treatments stabilize the nickel particle sizes of air(B) and H 2 (B) catalysts at 600°C by slowing down the sintering process. Plasma treatments after the impregnation of precursors, on the other hand, tend to delay the growth of nickel particles below 600°C, forming smaller Ni particles, but with a sudden increase in particle size near 600°C. It suggests that the structure of Ni nitrate and the metal-support interaction have been altered by the plasma treatments. The reduction patterns of plasma treated catalysts are, therefore, changed. The catalyst with a combination plasma treatment demonstrates that the effect of a combination plasma treatment is larger than either the plasma treatment before or after the impregnation alone. Both plasma treatments before and after the impregnation of metal precursor play important roles in modifying supported metal catalysts.

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A comparison study on non-thermal plasma-assisted catalytic reduction of NO by C3H6 at low temperatures between Ag/USY and Ag/Al2O3 catalysts

Cited by 19 publications

References 27 publications

Combination of Nonthermal Plasma and Low Temperature-C₃H₈-Selective Catalytic Reduction over Co-In/H-beta Catalyst for Nitric Oxide Abatement

Combination of Nonthermal Plasma and Low Temperature-C₃H₈-Selective Catalytic Reduction over Co-In/H-beta Catalyst for Nitric Oxide Abatement

Non‐Thermal Plasma Activation of Gold‐Based Catalysts for Low‐Temperature Water–Gas Shift Catalysis

Characterization of Al2O3 Supported Nickel Catalysts Derived from RF Non-thermal Plasma Technology

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A comparison study on non-thermal plasma-assisted catalytic reduction of NO by C3H6 at low temperatures between Ag/USY and Ag/Al2O3 catalysts

Cited by 19 publications

References 27 publications

Combination of Nonthermal Plasma and Low Temperature-C3H8-Selective Catalytic Reduction over Co-In/H-beta Catalyst for Nitric Oxide Abatement

Combination of Nonthermal Plasma and Low Temperature-C3H8-Selective Catalytic Reduction over Co-In/H-beta Catalyst for Nitric Oxide Abatement

Non‐Thermal Plasma Activation of Gold‐Based Catalysts for Low‐Temperature Water–Gas Shift Catalysis

Characterization of Al2O3 Supported Nickel Catalysts Derived from RF Non-thermal Plasma Technology

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Combination of Nonthermal Plasma and Low Temperature-C₃H₈-Selective Catalytic Reduction over Co-In/H-beta Catalyst for Nitric Oxide Abatement

Combination of Nonthermal Plasma and Low Temperature-C₃H₈-Selective Catalytic Reduction over Co-In/H-beta Catalyst for Nitric Oxide Abatement