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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:

• CeO2sub> doping significantly improved low-temperature NH3sub>-SCR activity on FeTiOxsub>.

Keywords： NH3sub>-SCR CeO2sub> doping Low-temperature NOxsub> removal Improved redox

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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

Keywords： V2sub>O5sub>/CeO2sub> catalysts NH3sub>-SCR (selective catalytic reduction

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The effect of preparation conditions of Pt/Al

Lei YUAN, Xiang ZHENG, Kaijiao DUAN, Hao HU, Jinggang WANG, Seong Ihl WOO, Zhiming LIU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3, Pages 457-463 doi: 10.1007/s11783-013-0512-5

Abstract: Selective catalytic reduction of NO by H in the presence of oxygen has been investigated over Pt/Al O catalysts pre-treated under different conditions. Catalyst preparation conditions exert significant influence on the catalytic performance, and the catalyst pre-treated by H or H then followed by O is much more active than that pre-treated by air. The higher surface area and the presence of metallic Pt over Pt/Al O pre-treated by H or pretreated by H then followed by O can contribute to the formation of NO , which then promotes the reaction to proceed at low temperatures.

Keywords： NOxsub> reduction Pt/Al2sub>O3sub> preparation condition H2sub>-SCR

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Chemical poison and regeneration of SCR catalysts for NOxsub>

Junhua LI,Yue PENG,Huazhen CHANG,Xiang LI,John C. CRITTENDEN,Jiming HAO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3, Pages 413-427 doi: 10.1007/s11783-016-0832-3

Abstract: Selective catalytic reduction (SCR) of NO with NH is an effective technique to remove NO from stationarydirections in developing poisoning resistance catalysts and facile efficient regeneration methods for SCR

Keywords： flue gas DeNOxsub> SCR catalyst poison and regeneration

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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: sub> by NH3sub> between 50 and 300 °C in the presence of excess oxygen. 0.10Sm–Mn catalyst indicatedTherefore, it significantly enhances the NO conversion, N2sub> selectivity, and sulfur resistance>2sub> on the reaction process about the catalysts were extensively explored.>2sub> and the amount of surface adsorbed oxygen.The Bronsted acid sites strengthen significantly due to the addition of SO2sub>, enhancing the

Keywords： MnOxsub> Sm–Mn catalyst NH3sub>-SCR sulfur resistance

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Numerical simulation and experimental verification of chemical reactions for SCR DeNO

Qiang ZHANG, Yonglin FAN, Wenyan LI

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 523-528 doi: 10.1007/s11705-010-0520-y

Abstract: Selective catalytic reduction (SCR) is a major commercial technology for NO removal in power plants.There are a lot of complex chemical reactions in SCR reactors, and it is of great significance to understandthe internal process of chemical reactions for SCR DeNO and study the impact of various factors onto get the best removal efficiency of NO, so that we can provide a reference for optimal running of SCR

Keywords： SCR NOxsub> removal efficiency chemical reactions simulation

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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 NH3sub>-SCR reaction over spinel

Keywords： Microwave field Spinel oxides NOxsub> Selective catalytic reduction

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On the monolayer dispersion behavior of Co3sub>O4sub> on HZSM-5 support: designing applicable

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

Abstract: Based on monolayer dispersion theory, Co3sub>O4sub>/ZSM-5 catalysts with different loadingsthreshold of 0.061 mmol 100 m^–2, equaling to a weight percentage around 4.5%.It has been revealed that the quantities of surface active oxygen (O2sub>^–) and acidcapacity, possesses the most abundant active O2sub>^– species and acidic sites, therebycapacity amount of Co3sub>O4sub> onto HZSM-5 support.

Keywords： Co3sub>O4sub>/ZSM-5 NOxsub>-SCR by NH3sub> monolayer dispersionthreshold effect surface acid sites surface active O2sub>^– anions

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Effects of SO

Quanming Liang, Jian Li, Hong He, Wenjun Liang, Tiejun Zhang, Xing Fan

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0926-6

Abstract: oxidation of NO to NO , which adsorbed on the Lewis acid site (V ═O) to form V ═NO and inspired the fast SCR

Keywords： Low temperature SCR De-NOxsub> activity Sulfur resistance Ammonium sulfate

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Rh2sub>O3sub>/hexagonal CePO4sub> nanocatalysts for N2sub>O decomposition

Huan Liu, Zhen Ma

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4, Pages 586-593 doi: 10.1007/s11705-017-1659-6

Abstract: Hexagonal CePO nanorods were prepared by a precipitation method and hexagonal CePO nanowires were prepared by hydrothermal synthesis at 150 °C. Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials. The Rh O supported on the CePO nanowires was much more active for the catalytic decomposition of N O than the Rh O supported on CePO nanorods. The stability of both catalysts as a function of time on stream was studied and the influence of the co-feed (CO , O , H O or O /H O) on the N O decomposition was also investigated. The samples were characterized by N adsorption-desorption, inductively coupled plasma optical emission spectroscopy, X-ray diffraction, transmission electron microscopy, X-ray photoelectron microscopy, hydrogen temperature-programmed reduction, oxygen temperature-programmed desorption, and CO temperature-programmed desorption in order to correlate the physicochemical and catalytic properties.

Keywords： Rh2sub>O3sub> CePO4sub> N2sub>O decomposition

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CO2sub> methanation and co-methanation of CO and CO2sub> over Mn-promoted Ni/Al2sub>O3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2, Pages 273-280 doi: 10.1007/s11705-016-1563-5

Abstract: A series of Mn-promoted 15 wt-% Ni/Al O catalysts were prepared by an incipient wetness impregnation method. The effect of the Mn content on the activity of the Ni/Al O catalysts for CO methanation and the co-methanation of CO and CO in a fixed-bed reactor was investigated. The catalysts were characterized by N physisorption, hydrogen temperature-programmed reduction and desorption, carbon dioxide temperature-programmed desorption, X-ray diffraction and high-resolution transmission electron microscopy. The presence of Mn increased the number of CO adsorption sites and inhibited Ni particle agglomeration due to improved Ni dispersion and weakened interactions between the nickel species and the support. The Mn-promoted 15 wt-% Ni/Al O catalysts had improved CO methanation activity especially at low temperatures (250 to 400 °C). The Mn content was varied from 0.86% to 2.54% and the best CO conversion was achieved with the 1.71Mn-Ni/Al O catalyst. The co-methanation tests on the 1.71Mn-Ni/Al O catalyst indicated that adding Mn markedly enhanced the CO methanation activity especially at low temperatures but it had little influence on the CO methanation performance. CO methanation was more sensitive to the reaction temperature and the space velocity than the CO methanation in the co-methanation process.

Keywords： Mn promotion nickel catalysts CO2sub> methanation co-methanation of CO and CO2sub>

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A Storage-Driven CO2sub> EOR for a Net-Zero Emission Target Article

Yueliang Liu, Zhenhua Rui

Engineering 2022, Volume 18, Issue 11, Pages 79-87 doi: 10.1016/j.eng.2022.02.010

Abstract: >2sub>) emissions.>2sub> emissions by storing CO2sub> in oil reservoirs.CO2sub> EOR—whose main target is to realize net-zero or even negative CO2sub> emissionsStorage-driven CO2sub> EOR is superior to conventional CO2sub> EOR in improving sweepingthan conventional CO2sub> EOR.

Keywords： CO2sub> EOR Net CO2sub> emissions Dimethyl ether Storage-driven CO2sub> EOR CO2sub> sequestration

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Al2sub>O3sub> and CeO2sub>-promoted MgO sorbents for CO2sub> capture at moderate

Huimei Yu, Xiaoxing Wang, Zhu Shu, Mamoru Fujii, Chunshan Song

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1, Pages 83-93 doi: 10.1007/s11705-017-1691-6

Abstract: A series of Al O and CeO modified MgO sorbents was prepared and studied for CO sorption at moderate temperatures. The CO sorption capacity of MgO was enhanced with the addition of either Al O or CeO . Over Al O -MgO sorbents, the best capacity of 24.6 mg-CO /g-sorbent was attained at 100 °C, which was 61% higher than that of MgO (15.3 mg-CO /g-sorbent). The highest capacity of 35.3 mg-CO /g-sorbent was obtained over the CeO -MgO sorbents at the optimal temperature of 200 °C. Combining with the characterization results, we conclude that the promotion effect on CO sorption with the addition of Al O and CeO can be attributed to the increased surface area with reduced MgO crystallite size. Moreover, the addition of CeO increased the basicity of MgO phase, resulting in more increase in the CO capacity than Al O promoter. Both the Al O -MgO and CeO -MgO sorbents exhibited better cyclic stability than MgO over the course of fifteen CO sorption-desorption cycles. Compared to Al O , CeO is more effective for promoting the CO capacity of MgO. To enhance the CO capacity of MgO sorbent, increasing the basicity is more effective than the increase in the surface area.

Keywords： CO2sub> capture MgO sorbents Al2sub>O3sub> CeO2sub> flue gas

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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: introduced new NO emission control policies to encourage the installation of selective catalytic reduction (SCRThere 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.challenges that, if not addressed, can reduce the reliability, performance, and cost-effectiveness of SCRIf these challenges are properly addressed, SCR can reliably and effectively remove up to 90% of NO

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

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The stabilization effect of Al2sub>O3sub> on unconventional Pb/SiO2sub> catalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1423-1429 doi: 10.1007/s11705-023-2315-y

Abstract: To enhance the stability, the traditional carrier Al2sub>O3sub> with a small amount, wasintroduced into Pb/SiO2sub> catalyst in this study.It has been proved that Al2sub>O3sub> can inhibit the reduction of PbO, and weaken theAs a result, 3Al15Pb/SiO2sub> catalyst exhibits a much higher stability up to more than 150 h.>2sub>O3sub> addition was also proposed.

Keywords： Pb/SiO2sub> Al2sub>O3sub> propane dehydrogenation propene stability

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Title Author Date Type Operation

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

Journal Article

Characterization and performance of V

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

Journal Article

The effect of preparation conditions of Pt/Al

Lei YUAN, Xiang ZHENG, Kaijiao DUAN, Hao HU, Jinggang WANG, Seong Ihl WOO, Zhiming LIU

Journal Article

Chemical poison and regeneration of SCR catalysts for NOxsub>

Junhua LI,Yue PENG,Huazhen CHANG,Xiang LI,John C. CRITTENDEN,Jiming HAO

Journal Article

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

Journal Article

Numerical simulation and experimental verification of chemical reactions for SCR DeNO

Qiang ZHANG, Yonglin FAN, Wenyan LI

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 Co3sub>O4sub> on HZSM-5 support: designing applicable

Journal Article

Effects of SO

Quanming Liang, Jian Li, Hong He, Wenjun Liang, Tiejun Zhang, Xing Fan

Journal Article

Rh2sub>O3sub>/hexagonal CePO4sub> nanocatalysts for N2sub>O decomposition

Huan Liu, Zhen Ma

Journal Article

CO2sub> methanation and co-methanation of CO and CO2sub> over Mn-promoted Ni/Al2sub>O3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Journal Article

A Storage-Driven CO2sub> EOR for a Net-Zero Emission Target

Yueliang Liu, Zhenhua Rui

Journal Article

Al2sub>O3sub> and CeO2sub>-promoted MgO sorbents for CO2sub> capture at moderate

Huimei Yu, Xiaoxing Wang, Zhu Shu, Mamoru Fujii, Chunshan Song

Journal Article

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

Jeremy J. SCHREIFELS, Shuxiao WANG, Jiming HAO

Journal Article

The stabilization effect of Al2sub>O3sub> on unconventional Pb/SiO2sub> catalyst

Journal Article

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