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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.The kinetic 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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Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1341-y

Abstract:

• 1,4-Dioxane was degraded via the photo-Fenton reactive membrane filtration

Keywords： Photo-Fenton     Ceramic membrane     1     4-Dioxane     Goethite    

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Lignin-based electrospun nanofiber membrane decorated with photo-Fenton Ag@MIF-100(Fe) heterojunctions

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 930-941 doi: 10.1007/s11705-023-2309-9

Abstract: /i> seeding method to fabricate a lignin-based electrospun nanofiber membrane (LENM) decorated with photo-Fentonwithin 30 min under illumination, which is attributed to a synergy of dye adsorption/enrichment and photo-FentonTherefore, the lignin-based photo-Fenton hybrid membrane can lay the foundation for the preparation and

Keywords： lignin     electrospinning     heterojunctions     photo-Fenton catalysis     wastewater remediation    

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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: ListItem>

• CeO2 doping significantly improved low-temperature NH3-SCR

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

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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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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     NOx     removal efficiency     chemical reactions     simulation    

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Solar fuel from photo-thermal catalytic reactions with spectrum-selectivity: a review

Sanli TANG, Jie SUN, Hui HONG, Qibin LIU

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 437-451 doi: 10.1007/s11708-017-0509-z

Abstract: The synergy of photo and thermal effects leads to a new approach to higher solar fuel production underThis paper reviews different approaches for solar fuel production from spectrum-selective photo-thermalreview begins with the meaning of synergetic effects, and the mechanisms of spectrum-selectivity and photo-thermalA discussion is finally presented concerning future development of photo-thermal catalytic reactions

Keywords： photo-thermal catalysis     spectrum-selectivity     solar fuel     full-spectrum    

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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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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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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: MnOx and Sm–Mn catalysts were prepared with the coprecipitation method, and they showed excellent activities and sulfur resistances for the selective catalytic reduction of NOx by NH3 between 50 and 300 °C in the presence of excess oxygen. 0.10Sm–Mn catalyst indicated better catalytic activity and sulfur resistance. Additionally, the Sm doping led to multi-aspect impacts on the phases, morphology structures, gas adsorption, reactions process, and specific surface areas. Therefore, it significantly enhances the NO conversion, N2 selectivity, and sulfur resistance. Based on various experimental characterization results, the reaction mechanism of catalysts and the effect of SO2 on the reaction process about the catalysts were extensively explored. For 0.10Sm–Mn catalyst, manganese sulfate and sulfur ammonium cannot be generated broadly under the influence of SO2 and the amount of surface adsorbed oxygen. The Bronsted acid sites strengthen significantly due to the addition of SO2, enhancing the sulfur resistance of the 0.10Sm–Mn catalyst.

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

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Chemical poison and regeneration of SCR catalysts for NOx

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     DeNOx     SCR catalyst     poison and regeneration    

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Hypoxia-induced activity loss of a photo-responsive microtubule inhibitor azobenzene combretastatin A4

Yang An, Chao Chen, Jundong Zhu, Pankaj Dwivedi, Yanjun Zhao, Zheng Wang

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 880-888 doi: 10.1007/s11705-019-1864-6

Abstract: The conformation-dependent activity of azobenzene combretastatin A4 (Azo-CA4) provides a unique approach to reduce the side-effects of chemotherapy, due to the light-triggered conformation transition of its azobenzene moiety. Under hypoxic tumor microenvironment, however, the high expression of azoreductase can reduce azobenzene to aniline. It was postulated that the Azo-CA4 might be degraded under hypoxia, resulting in the decrease of its anti-tumor activity. The aim of this study was to verify such hypothesis in HeLa cells . The quantitative drug concentration analysis shows the ratiometric formation of degradation end-products, confirming the bioreduction of Azo-CA4. The tubulin staining study indicates that Azo-CA4 loses the potency of switching off microtubule dynamics under hypoxia. Furthermore, the cell cycle analysis shows that the ability of Azo-CA4 to induce mitotic arrest is lost at low oxygen content. Therefore, the cytotoxicity of Azo-CA4 is compromised under hypoxia. In contrast, combretastatin A4 as a positive control maintains the potency to inhibit tubulin polymerization and break down the nuclei irrespective of light irradiation and oxygen level. This work highlights the influence of hypoxic tumor microenvironment on the anti-tumor potency of Azo-CA4, which should be considered during the early stage of designing translational Azo-CA4 delivery systems.

Keywords： hypoxia     microtubule inhibitor     drug delivery     azo-combretastatin A4     photo-responsive    

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Cyanobacterial photo-driven mixotrophic metabolism and its advantages for biosynthesis

Ni Wan,Mary Abernathy,Joseph Kuo-Hsiang Tang,Yinjie J. Tang,Le You

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 308-316 doi: 10.1007/s11705-015-1521-7

Abstract: The photo-fermentations show enhanced photosynthesis, while CO loss from organic substrate degradationThe use of cyanobacteria as “green ” could be a promising route to develop robust photo-biorefineries

Keywords： CO2 mass transfer     N2 fixation     photosystem     RuBisCO     the TCA cycle    

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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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Review: Tip-based vibrational spectroscopy for nanoscale analysis of emerging energy materials

Amun JARZEMBSKI, Cedric SHASKEY, Keunhan PARK

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 43-71 doi: 10.1007/s11708-018-0524-8

Abstract: More recently, photo-induced force microscopy (PiFM) has been developed to measure the change of the

Keywords： vibrational spectroscopy     atomic force microscopy     photo-thermal induced resonance     scanning near-fieldoptical microscopy     tip-enhanced Raman spectroscopy     photo-induced force microscopy     molecular resonances    

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Title Author Date Type Operation

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

YiangChen CHOU, Young KU

Journal Article

Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic

Journal Article

Lignin-based electrospun nanofiber membrane decorated with photo-Fenton Ag@MIF-100(Fe) heterojunctions

Journal Article

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

Journal Article

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

Journal Article

Numerical simulation and experimental verification of chemical reactions for SCR DeNO

Qiang ZHANG, Yonglin FAN, Wenyan LI

Journal Article

Solar fuel from photo-thermal catalytic reactions with spectrum-selectivity: a review

Sanli TANG, Jie SUN, Hui HONG, Qibin LIU

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

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

Journal Article

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

Journal Article

Chemical poison and regeneration of SCR catalysts for NOx

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

Journal Article

Hypoxia-induced activity loss of a photo-responsive microtubule inhibitor azobenzene combretastatin A4

Yang An, Chao Chen, Jundong Zhu, Pankaj Dwivedi, Yanjun Zhao, Zheng Wang

Journal Article

Cyanobacterial photo-driven mixotrophic metabolism and its advantages for biosynthesis

Ni Wan,Mary Abernathy,Joseph Kuo-Hsiang Tang,Yinjie J. Tang,Le You

Journal Article

Selective catalytic reduction of NO

Pavlo I. Kyriienko

Journal Article

Review: Tip-based vibrational spectroscopy for nanoscale analysis of emerging energy materials

Amun JARZEMBSKI, Cedric SHASKEY, Keunhan PARK

Journal Article