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Ammonia adsorption on graphene and graphene oxide: a first-principles study

Yue PENG, Junhua LI

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 403-411 doi: 10.1007/s11783-013-0491-6

Abstract: realization of graphene sensor to detect gas molecules that are harmful to the environment, the ammonia adsorptionThe optimal adsorption and orientation of the NH molecules on the graphene surfaces were determined,and the adsorption energies ( ) as well as the Mulliken charge transfers of NH were calculated.The surface epoxy or hydroxyl groups can promote the adsorption of NH on the GO; the enhancement of

Keywords： graphene oxide     first-principles calculations     NH<sub>3sub> adsorption    

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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: MnO<sub>xsub> and Sm–Mn catalysts were prepared with the coprecipitation method, and they showedsub> by NH<sub>3sub> between 50 and 300 °C in the presence of excess oxygen. 0.10Sm–Mn catalyst indicatedAdditionally, the Sm doping led to multi-aspect impacts on the phases, morphology structures, gas adsorptionTherefore, it significantly enhances the NO conversion, N<sub>2sub> selectivity, and sulfur resistanceThe Bronsted acid sites strengthen significantly due to the addition of SO<sub>2sub>, enhancing the

Keywords： MnO<sub>xsub>     Sm–Mn     catalyst     NH<sub>3sub>-SCR     sulfur resistance    

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different acid anions on highly efficient Ce-based catalysts for selective catalytic reduction of NO with NH<sub>3sub>

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

Abstract: <sub>3sub>) were synthesized and used for the selective catalytic reduction (SCR) of NO by NH<sub>3NH<sub>3sub>-SCR performances were conducted in the temperature range of 80 to 400 °C.> Ce<sub>2sub>(SO<sub>4sub>)<sub>3sub>, which is in agreement with their abilities of NH<sub>3sub> adsorption capacities.The key factors that can enhance the SCR are the existence of Ce4+, large NH<sub>3sub> adsorption

Keywords： CePO<sub>4sub>     CeVO<sub>4sub>     Ce<sub>2sub>(SO<sub>4sub>)<sub>3sub>     selective catalytic reduction    

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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:

• CeO<sub>2sub> doping significantly improved low-temperature NH<sub>3sub>-SCR activity on FeTiO<sub>xsub>.

Keywords： NH<sub>3sub>-SCR     CeO<sub>2sub> doping     Low-temperature NO<sub>xsub> removal     Improved redox    

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Integrating of metal-organic framework UiO-66-NH2 and cellulose nanofibers mat for high-performance adsorption

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1387-1398 doi: 10.1007/s11705-022-2154-2

Abstract: UiO-66-NH<sub>2sub> is an efficient material for removing pollutants from wastewater due to its high<sub>2sub> from the water after adsorption but also demonstrate better adsorption capacity (683 mg∙g‒1 (T = 25 °C, pH = 3)) than that of the simple UiO-66-NH<sub>2sub> (309.6 mg∙g‒1 (T = 25 °C, pH = 3)).Through the analysis of adsorption kinetics and isotherms, the adsorption for rose bengal is mainly suitable

Keywords： UiO-66-NH<sub>2sub>     cellulose nanofibers     rose bengal     adsorption     mechanism    

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Metal-Free Hexagonal Perovskite High-Energetic Materials with NH<sub>3sub>OH+/NH<sub>2sub>NH<sub>3sub>+ as B-site Cations Article

Yu Shang, Zhi-Hong Yu, Rui-Kang Huang, Shao-Li Chen, De-Xuan Liu, Xiao-Xian Chen, Wei-Xiong Zhang, Xiao-Ming Chen

Engineering 2020, Volume 6, Issue 9,   Pages 1013-1018 doi: 10.1016/j.eng.2020.05.018

Abstract: >2sub>dabco)B(ClO<sub>4sub>)<sub>3sub> (H<sub>2sub>dabco2+ = 1,4-diazabicyclo[2.2.2]octane-1,4-diium), were fabricated via an easily scaled-up synthetic route using NH<sub>3sub>OH+ and NH<sub>2sub>NH<sub>3sub>+ as B-site cations, respectively.Compared with their NH<sub>4sub>+ analog ((H<sub>2sub>dabco)(NH<sub>4sub>)(ClO<sub>4sub>)<sub>3sub>; DAP-4), which has a cubic perovskite structure, DAP-6 and DAP-7 have higher crystal

Keywords： Energetic materials     Single explosive     Solid propellant     Metal-free     Hexagonal perovskite    

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On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> 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, Co<sub>3sub>O<sub>4sub>/ZSM-5 catalysts with different loadingsCo<sub>3sub>O<sub>4sub> can spontaneously disperse on HZSM-5 support with a monolayer dispersionsites are crucial for the reaction, which can adsorb and activate NO<sub>xsub> and NH<sub>3Below the monolayer dispersion threshold, Co<sub>3sub>O<sub>4sub> is finely dispersed as sub-monolayerscapacity amount of Co<sub>3sub>O<sub>4sub> onto HZSM-5 support.

Keywords： Co<sub>3sub>O<sub>4sub>/ZSM-5     NO<sub>xsub>-SCR by NH<sub>3sub>     monolayer dispersionthreshold effect     surface acid sites     surface active O<sub>2sub>– anions    

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Removal of ammonium and nitrate through Anammox and FeS-driven autotrophic denitrification

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1674-4

Abstract:

● Simultaneous NH<sub>4sub>+/NO<sub>3sub>–

Keywords： Anammox     Denitrification     FeS     NH<sub>4sub>+/NO<sub>3sub>−     Sulfammox    

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Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon

Bingnan REN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 203-208 doi: 10.1007/s11705-010-0571-0

Abstract: been explained for the adsorption process of PH .The thermodynamic properties including PH adsorption isotherm and adsorption heat were separately investigatedThe adsorption capacity reached the maximum at 70°C.Then with increasing temperature, chemical adsorption gradually dominated in the adsorption process.The adsorption capacity decreased at above 70°C is due to the exothermic effects in the process of adsorption

Keywords： adsorption     PH<sub>3sub>     activated carbon     kinetics     thermodynamics    

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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: catalysts were evaluated for low temperature selective catalytic reduction (SCR) of NO with ammonia (NH

Keywords： V<sub>2sub>O<sub>5sub>/CeO<sub>2sub> catalysts     NH<sub>3sub>-SCR (selective catalytic reduction    

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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.were prepared by a homogeneous precipitation method for the selective catalytic reduction of NO with NHphotoelectron spectroscopy (XPS) were used to evaluate the influence of the physicochemical properties on NHCr-Zr-Ce and Mn-Zr-Ce catalysts are much more active than ZrO -CeO binary oxide for the low temperature NH

Keywords： NH<sub>3sub>-selective catalytic reduction     NO<sub>xsub>     Low temperature     Cr-Zr-Ce    

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Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 38-46 doi: 10.1007/s11705-011-1167-z

Abstract: Two types of regenerated solutions, namely NH Cl (1 mol/L) and dilute H SO (0.5 mol/L), were employedproperties of the catalysts were determined by X-ray diffraction, scanning electron microscopy, N adsorptionThe catalyst regenerated by aqueous NH Cl had a higher activity than that of the catalyst treated byThe main reason is that the NH generated from the decomposition of NH Cl at high temperatures can be

Keywords： V<sub>2sub>O<sub>5sub>-WO<sub>3sub>/TiO<sub>2sub> catalysts     thermal deactivation     regeneration     NH<sub>4sub>Cl     dilute H<sub>2sub>SO<sub>4sub> solution    

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Investigation of fluorescence characterization and electrochemical behavior on the catalysts of nanosized Pt-Rh/γ-Al

Chang-Mao HUNG, Wen-Liang LAI, Jane-Li LIN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 428-434 doi: 10.1007/s11783-013-0517-0

Abstract: This work describes the environmentally friendly technology for oxidation of ammonia (NH ) to form nitrogenresults demonstrated that at a temperature of 673K and an oxygen content of 4%, approximately 99% of the NHN was the main product in NH -SCO process.Further, it reveals that the oxidation of NH was proceeds by the over-oxidation of NH into NO, whichwas conversely reacted with the NH to yield N .

Keywords： ammonia (NH<sub>3sub>)     nanosized Pt-Rh/γ-Al<sub>2sub>O<sub>3sub> catalyst     excitation-emission fluorescent    

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Optimization of electrochemically synthesized Cu

Kasra Pirzadeh, Ali Asghar Ghoreyshi, Mostafa Rahimnejad, Maedeh Mohammadi

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 233-247 doi: 10.1007/s11705-019-1893-1

Abstract: obtained using 1 g of ligand, applied voltage of 25 V, synthesis time of 2 h, and electrode length of 3The isosteric heat of adsorption of both gases was calculated by inserting temperature-dependent formThe adsorption of CO /N binary mixture with a concentration ratio of 15/85 vol-% was also studied experimentallyMoreover, Cu (BTC) showed no considerable loss in CO adsorption after six sequential cycles.

Keywords： Cu<sub>3sub>(BTC)<sub>2sub> electrochemical synthesis     CO<sub>2sub> adsorption     Taguchi optimization    

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Rh<sub>2sub>O<sub>3sub>/hexagonal CePO<sub>4sub> nanocatalysts for N<sub>2sub>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: The samples were characterized by N adsorption-desorption, inductively coupled plasma optical emission

Keywords： Rh<sub>2sub>O<sub>3sub>     CePO<sub>4sub>     N<sub>2sub>O decomposition    

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Title Author Date Type Operation

Ammonia adsorption on graphene and graphene oxide: a first-principles study

Yue PENG, Junhua LI

Journal Article

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

Journal Article

different acid anions on highly efficient Ce-based catalysts for selective catalytic reduction of NO with NH<sub>3sub>

Journal Article

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

Journal Article

Integrating of metal-organic framework UiO-66-NH2 and cellulose nanofibers mat for high-performance adsorption

Journal Article

Metal-Free Hexagonal Perovskite High-Energetic Materials with NH<sub>3sub>OH+/NH<sub>2sub>NH<sub>3sub>+ as B-site Cations

Yu Shang, Zhi-Hong Yu, Rui-Kang Huang, Shao-Li Chen, De-Xuan Liu, Xiao-Xian Chen, Wei-Xiong Zhang, Xiao-Ming Chen

Journal Article

On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> on HZSM-5 support: designing applicable

Journal Article

Removal of ammonium and nitrate through Anammox and FeS-driven autotrophic denitrification

Journal Article

Kinetics and thermodynamics of the phosphine adsorption on the modified activated carbon

Bingnan REN

Journal Article

Characterization and performance of V

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

Journal Article

Promotion of transition metal oxides on the NH

Weiman Li, Haidi Liu, Yunfa Chen

Journal Article

Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

Journal Article

Investigation of fluorescence characterization and electrochemical behavior on the catalysts of nanosized Pt-Rh/γ-Al

Chang-Mao HUNG, Wen-Liang LAI, Jane-Li LIN

Journal Article

Optimization of electrochemically synthesized Cu

Kasra Pirzadeh, Ali Asghar Ghoreyshi, Mostafa Rahimnejad, Maedeh Mohammadi

Journal Article

Rh<sub>2sub>O<sub>3sub>/hexagonal CePO<sub>4sub> nanocatalysts for N<sub>2sub>O decomposition

Huan Liu, Zhen Ma

Journal Article