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Effect of different acid anions on highly efficient Ce-based catalysts for selective catalytic reductionof NO with NH3

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1399-1411 doi: 10.1007/s11705-023-2345-5

Abstract: /sub>) were synthesized and used for the selective catalytic reduction (SCR) of NO by NH3.NH3-SCR performances were conducted in the temperature range of 80 to 400 °C.> Ce2(SO4)3, which is in agreement with their abilities of NH3<> on NH3-SCR performances of Ce-based catalysts was systematically investigated by the X-rayThe key factors that can enhance the SCR are the existence of Ce4+, large NH3 adsorption

Keywords： CePO4     CeVO4     Ce2(SO4)3     selective catalytic reduction    

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NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1696-y

Abstract:

● Microwave-assisted catalytic NH3-SCR reaction over spinel

Keywords： Microwave field     Spinel oxides     NOx     Selective catalytic reduction    

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On the monolayer dispersion behavior of Co3O4 on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1741-1754 doi: 10.1007/s11705-023-2332-x

Abstract: have been prepared for selective catalytic reduction of nitrogen oxides by ammonia.and acid sites are crucial for the reaction, which can adsorb and activate NOx and NH3 reactants effectively.is favorable to generate the two kinds of active sites, hence promoting the performance of ammonia selectivecatalytic reduction of nitrogen oxide.

Keywords： Co3O4/ZSM-5     NOx-SCR by NH3     monolayer dispersion    

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Characterization and performance of V

Caiting LI, Qun LI, Pei LU, Huafei CUI, Guangming ZENG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 156-161 doi: 10.1007/s11783-010-0295-x

Abstract: The catalysts were evaluated for low temperature selective catalytic reduction (SCR) of NO with ammonia(NH ).The effects of O and SO on catalytic activity were also studied.

Keywords： V2O5/CeO2 catalysts     NH3-SCR (selective catalytic reduction    

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Multi-stage ammonia production for sorption selective catalytic reduction of NO

Chen ZHANG, Guoliang AN, Liwei WANG, Shaofei WU

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 840-851 doi: 10.1007/s11708-021-0797-1

Abstract: Sorption selective catalytic reduction of nitrogen oxides (NOx) (sorption-SCR) hasever been proposed for replacing commercial urea selective catalytic reduction of NOx (urea-SCR), while only the single-stage sorption cycle is hitherto adopted for sorption-SCR.all present overwhelming advantages over urea-SCR considering the much higher NOxof AdBlue for urea-SCR.

Keywords： selective catalytic reduction (SCR)     nitrogen oxides (NOx)     ammonia     composite sorbent    

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Selective catalytic reduction of NO

Pavlo I. Kyriienko

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 471-491 doi: 10.1007/s11705-019-1847-7

Abstract: Research results regarding selective catalytic reduction (SCR) of NO with ethanol and other C oxygenatesWays to improve the catalysts for the SCR of NO with C oxygenates are outlined.

Keywords： SCR     nitrogen oxides     silver-alumina catalyst     silver species     ethanol     oxygenates    

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Effects of support acidity on the reaction mechanisms of selective catalytic reduction of NO by CH

Shicheng XU, Junhua LI, Dong YANG, Jiming HAO

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 2,   Pages 186-193 doi: 10.1007/s11783-009-0016-5

Abstract: The reaction mechanisms of selective catalytic reduction (SCR) of nitric oxide (NO) by methane (CH )acidity of solid superacid played an important role in determining the reaction mechanisms and the catalyticnsted acid sites would not necessarily lead to better catalytic performance, however, since the activeThe reaction involving NO moiety was likely to be determined by the step of reduction of NO.Therefore, to enhance the SCR activity of solid superacid catalysts, reactions between appropriate couples

Keywords： selective catalytic reduction (SCR)     nitric oxide (NO)     methane     support acidity     Br?    

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Design and operational considerations for selective catalytic reduction technologies at coal-fired boilers

Jeremy J. SCHREIFELS, Shuxiao WANG, Jiming HAO

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 98-105 doi: 10.1007/s11708-012-0171-4

Abstract: Protection (MEP) has introduced new NO emission control policies to encourage the installation of selectivecatalytic reduction (SCR) technologies on a large number of coal-fired electric power plants.There is, however, limited experience with SCR in China.It is therefore useful to explore the lessons from the use of SCR technologies in other countries.If these challenges are properly addressed, SCR can reliably and effectively remove up to 90% of NO

Keywords： nitrogen oxides (NOx)     coal     selective catalytic reduction (SCR)     air pollution    

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Low-temperature selective catalytic reduction of NO with NH based on MnO-CeO/ACFN

SHEN Boxiong, LIU Ting, SHI Zhanliang, SHI Jianwei, YANG Tingting, ZHAO Ning

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 325-329 doi: 10.1007/s11705-008-0053-9

Abstract: MnO-CeO/ACFN were prepared by the impregnation method and used as catalyst for selective catalytic reductionof NO with NH at 80°C–150°C.carbon fiber (ACF) increased after the treatment with nitric acid, which was favorable to improve the catalyticIn addition, the effects of a series of performance parameters, including initial NH concentration, NO

Keywords： preparation     conversion     favorable     selective catalytic     MnO-CeO/ACFN    

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Promotion of transition metal oxides on the NH

Weiman Li, Haidi Liu, Yunfa Chen

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0914-x

Abstract: Manganese and chromium oxides promote the NH -SCR activity of Zr-Ce mixed oxide.manganese oxide promoted ZrO -CeO catalysts were prepared by a homogeneous precipitation method for the selectivecatalytic reduction of NO with NH .microscope (HR-TEM), Brunauer–Emmett–Teller (BET) surface area analysis, H temperature-programmed reduction-SCR activity.

Keywords： NH3-selective catalytic reduction     NOx     Low temperature     Cr-Zr-Ce    

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Precise regulation of acid pretreatment for red mud SCR catalyst: Targeting on optimizing the acidity

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1447-x

Abstract:

• The optimum SCR activity was realized by tuning the acid pretreatment

Keywords： Air pollution control     Nitrogen oxides     Selective catalytic reduction     Red mud     Solid waste utilization    

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Denitrification performance and sulfur resistance mechanism of Sm–Mn catalyst for low temperature NH-SCR

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 617-633 doi: 10.1007/s11705-022-2258-8

Abstract: with the coprecipitation method, and they showed excellent activities and sulfur resistances for the selectivecatalytic reduction of NOx by NH3 between 50 and 300 °C in the presenceof excess oxygen. 0.10Sm–Mn catalyst indicated better catalytic activity and sulfur resistance.

Keywords： MnOx     Sm–Mn     catalyst     NH3-SCR     sulfur resistance    

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CeO doping boosted low-temperature NH-SCR activity of FeTiO catalyst: A microstructure analysis and reaction

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1539-2

Abstract:

• CeO2 doping significantly improved low-temperature NH3-SCR activity on FeTiOx.

Keywords： NH3-SCR     CeO2 doping     Low-temperature NOx removal     Improved redox    

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Design guidelines for urea hydrolysers for ammonia demand of the SCR DENOX project in coal-fired power

Peng ZHENG, Xuan YAO, Wei ZHENG

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 127-132 doi: 10.1007/s11708-012-0225-7

Abstract: Ammonia is highly volatile and will present substantial environmental and operation hazards when leaking into the air. However, ammonia is the most common reactant in the DENOX project to eliminate NO in the flue gas. The storage and transportation of liquid ammonia has always been a dilemma of the power plant. Urea is a perfect substitute source for ammonia in the plant. Urea hydrolysis technology can easily convert urea into ammonia with low expense. Presently, there is still no self-depended mature urea hydrolysis technology for the DENOX project in China; therefore, this paper proposes several guidelines to design the urea hydrolyser by theoretical analysis. Based on theoretical analysis, a simulation model is built to simulate the chemical reaction in the urea hydrolyser and is validated by the operational data of the commercial hydrolyser revealed in the literature. This paper endeavors to propose suggestions and guidelines to develop domestically urea hydrolysers in China.

Keywords： urea     hydrolyser     ammonia     selective catalytic reduction (SCR)    

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Selective reduction of NO by photo-SCR with ammonia in an annular fixed-film photoreactor

YiangChen CHOU, Young KU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 149-155 doi: 10.1007/s11783-010-0296-9

Abstract: Gaseous NO was photocatalytically reduced at room temperature by photo-assisted selective catalytic reduction(photo-SCR) with ammonia over TiO in this study.NO reduction efficiency and N selectivity were determined from gases composition at the outlet streamExperimental results showed that selective catalytic reduction of NO with ammonia over TiO in the presencekinetic model proposed in this study can be used to reasonably describe the reaction mechanism of photo-SCR

Keywords： photo-SCR     photocatalysis     NO reduction     Eley-Rideal model    

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Title Author Date Type Operation

Effect of different acid anions on highly efficient Ce-based catalysts for selective catalytic reductionof NO with NH3

Journal Article

NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Journal Article

On the monolayer dispersion behavior of Co3O4 on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

Journal Article

Characterization and performance of V

Caiting LI, Qun LI, Pei LU, Huafei CUI, Guangming ZENG

Journal Article

Multi-stage ammonia production for sorption selective catalytic reduction of NO

Chen ZHANG, Guoliang AN, Liwei WANG, Shaofei WU

Journal Article

Selective catalytic reduction of NO

Pavlo I. Kyriienko

Journal Article

Effects of support acidity on the reaction mechanisms of selective catalytic reduction of NO by CH

Shicheng XU, Junhua LI, Dong YANG, Jiming HAO

Journal Article

Design and operational considerations for selective catalytic reduction technologies at coal-fired boilers

Jeremy J. SCHREIFELS, Shuxiao WANG, Jiming HAO

Journal Article

Low-temperature selective catalytic reduction of NO with NH based on MnO-CeO/ACFN

SHEN Boxiong, LIU Ting, SHI Zhanliang, SHI Jianwei, YANG Tingting, ZHAO Ning

Journal Article

Promotion of transition metal oxides on the NH

Weiman Li, Haidi Liu, Yunfa Chen

Journal Article

Precise regulation of acid pretreatment for red mud SCR catalyst: Targeting on optimizing the acidity

Journal Article

Denitrification performance and sulfur resistance mechanism of Sm–Mn catalyst for low temperature NH-SCR

Journal Article

CeO doping boosted low-temperature NH-SCR activity of FeTiO catalyst: A microstructure analysis and reaction

Journal Article

Design guidelines for urea hydrolysers for ammonia demand of the SCR DENOX project in coal-fired power

Peng ZHENG, Xuan YAO, Wei ZHENG

Journal Article

Selective reduction of NO by photo-SCR with ammonia in an annular fixed-film photoreactor

YiangChen CHOU, Young KU

Journal Article