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Catalytic activities and mechanism of formaldehyde oxidation over gold supported on MnO

Guanglong PANG,Donghui WANG,Yunhong ZHANG,Chunyan MA,Zhengping HAO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 447-457 doi: 10.1007/s11783-015-0808-8

Abstract: MnO microspheres with various surface structures were prepared using the hydrothermal method, and AuWe obtained three MnO microspheres and Au/MnO samples: coherent solid spheres covered with wire-likeaccelerate surface oxygen species transition, which can account for the catalytic activity enhancement of Au/MnO .A proposed mechanism of formaldehyde oxidation over Au/MnO catalysts was also obtained.

Keywords： MnO<sub>2sub> microspheres     Au/MnO<sub>2sub>     formaldehyde oxidation     γ-MnO<sub>2sub>    

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g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 217-225 doi: 10.1007/s11705-022-2214-7

Abstract: Herein, superior α-MnO<sub>2sub>@g-C<sub>3sub>N<sub>4sub> was successfully prepared forstable zinc-ion batteries (ZIBs) cathode by introducing g-C<sub>3sub>N<sub>4sub> nanosheets.Compared with pure α-MnO<sub>2sub>, α-MnO<sub>2sub>@g-C<sub>3sub>N<sub>4sub> hasEven at 1 A·g–1, the α-MnO<sub>2sub>@g-C<sub>3sub>N<sub>4sub> still retains 100The α-MnO<sub>2sub>@g-C<sub>3sub>N<sub>4sub>-based cathode has the highest energy density

Keywords： α-MnO<sub>2sub> hollow nanorods     g-C<sub>3sub>N<sub>4sub>     heterojunction     aqueous Zn-ion    

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Fabrication and photocatalytic ability of an Au/TiO<sub>2sub>

Fenghe Lv, Hua Wang, Zhangliang Li, Qi Zhang, Xuan Liu, Yan Su

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-017-0977-8

Abstract: A new type of Au/TiO /reduced graphene oxide (RGO) nanocomposite was fabricated by the hydrothermal synthesisof TiO on graphene oxide followed by the photodeposition of Au nanoparticles.Transmission electron microscopy images showed that Au nanoparticles were loaded onto the surface ofAu/TiO /RGO had a better photocatalytic activity than Au/TiO for the degradation of phenol.Electrochemical measurements indicated that Au/TiO /RGO had an improved charge transfer capability.

Keywords： Reduced graphene oxide     Au     TiO<sub>2sub>     Nanocomposite     Photocatalysis    

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Engineering a Coordinatively Unsaturated Au–O–Ti3+ Structure Toward Unprecedented H<sub>2sub> Efficiency for Low-Temperature Propene Epoxidation with H<sub>2sub> and O<sub>2sub> Article

Zhaoning Song, Hao Yan, Juncong Yuan, Hongfei Ma, Jianlin Cao, Yongxiang Wang, Qiang Wang, Chong Peng, Feng Deng, Xiang Feng, De Chen, Chaohe Yang, Yongkang Hu

Engineering 2023, Volume 25, Issue 6,   Pages 144-156 doi: 10.1016/j.eng.2023.01.008

Abstract: as the active sites for propene epoxidation with H<sub>2sub> and O<sub>2sub> at a relatively hightemperature, although they are limited by poor H<sub>2sub> efficiency.and Ti3+, thereby enhancing the O<sub>2sub> adsorption ability of the catalyst and promotingthe in situ formation of H<sub>2sub>O<sub>2sub> and the Ti–OOH intermediate, evenThe insights and methodology reported here not only shed new light on maximizing H<sub>2sub> efficiency

Keywords： Propene epoxidation     H<sub>2sub> efficiency     Au/Ti bifunctional catalysts     Coordinatively unsaturated    

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Plasmonic Au nanoparticles supported on both sides of TiO2 hollow spheres for maximising photocatalytic

Jianwei Lu, Lan Lan, Xiaoteng Terence Liu, Na Wang, Xiaolei Fan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 665-671 doi: 10.1007/s11705-019-1815-2

Abstract: hollow spheres (HSs) was developed, in which both sides of TiO HSs were utilised for stabilising AuThe composite structure of single Au NP yolk-TiO shell-Au NPs, denoted as Au@Au(TiO , was rendered andAu@Au(TiO showed enhanced photocatalytic activity in the degradation of methylene blue and phenol inaqueous phase under visible light surpassing that of other reference materials such as Au(TiO by 77%and Au@P25 by 52%, respectively, in phenol degradation.

Keywords： TiO<sub>2sub> hollow spheres     plasmonic Au nanoparticles     confinement     visible light     photocatalytic degradation    

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Preparation of biomass-derived carbon loaded with MnO as lithium-ion battery anode for improving its

Frontiers of Chemical Science and Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11705-023-2376-y

Abstract: treatment, this work proposes a two-step activation method to load MnO<sub>2sub> charge transfer ontobiomass-derived carbon (KAC@MnO<sub>2sub>).Comprehensive analysis reveals that KAC@MnO<sub>2sub> has a micro-mesoporous coexistence structureSpecifically, KAC@MnO<sub>2sub> exhibits an initial charge-discharge capacity of 847.3/1813.2 mAh·gEven at a high current density of 1.0 A·g–1, KAC@MnO<sub>2sub> still exhibits excellent

Keywords： biomass-derived carbon     MnO<sub>2sub>     lithium-ion batteries     anode material     high reversible capacity    

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Facile synthesis of α-MnO

Weixin ZHANG, Wenran ZHAO, Zaoyuan ZHOU, Zeheng YANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 64-72 doi: 10.1007/s11705-014-1402-5

Abstract: In this paper, α-MnO micronests composed of nanowires were fabricated via a hydrothermal reaction ofThe α-MnO micronests were demonstrated to have a higher adsorption capacity than γ-MnO microspheresThe amount of Congo red adsorbed per unit weight of α-MnO micronests increased significantly from 114Kinetics, isotherms and thermodynamics for the adsorption of Congo red on α-MnO micronests were examinedThe experimental results indicate that α-MnO micronests possess a high adsorption capacity and could

Keywords： MnO<sub>2sub>     Congo red     adsorption     kinetics     isotherm     thermodynamics    

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Co-present Pb(II) accelerates the oxidation of organic contaminants by permanganate: Role of Pb(III)

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1530-y

Abstract:

• Simultaneous removal of organic contaminants and Pb(II) was achieved by Mn(VII).

Keywords： Permanganate     Pb(II) oxidation     MnO<sub>2sub>     pH effect    

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Effects of oxidizing environment on digestate humification and identification of substances governing the dissolved organic matter (DOM) transformation process

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1520-0

Abstract:

• Liquid digestate humification was investigated under different oxidizing environment.

Keywords： Liquid digestate     MnO<sub>2sub>     Oxygen     DOM transformation     Humic-like acids    

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Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1726-1734 doi: 10.1007/s11705-022-2188-5

Abstract: In this work, the kinetics of SrFeO<sub>3−δsub>–CaO∙MnO nanocomposite reduction by methane was

Keywords： chemical looping reforming     SrFeO<sub>3−δsub>/CaO·MnO nanocomposite     reduction kinetics     Avrami–Erofeyev    

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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 showedTherefore, it significantly enhances the NO conversion, N<sub>2sub> 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 SO<sub>2sub>, enhancing the

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

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

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CO<sub>2sub> methanation and co-methanation of CO and CO<sub>2sub> over Mn-promoted Ni/Al<sub>2sub>O<sub>3sub> 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     CO<sub>2sub> methanation     co-methanation of CO and CO<sub>2sub>    

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A Storage-Driven CO<sub>2sub> 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 CO<sub>2sub> in oil reservoirs.CO<sub>2sub> EOR—whose main target is to realize net-zero or even negative CO<sub>2sub> emissionsStorage-driven CO<sub>2sub> EOR is superior to conventional CO<sub>2sub> EOR in improving sweepingthan conventional CO<sub>2sub> EOR.

Keywords： CO<sub>2sub>     EOR     Net CO<sub>2sub>     emissions     Dimethyl ether     Storage-driven CO<sub>2sub>     EOR     CO<sub>2sub>     sequestration    

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Al<sub>2sub>O<sub>3sub> and CeO<sub>2sub>-promoted MgO sorbents for CO<sub>2sub> 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： CO<sub>2sub> capture     MgO sorbents     Al<sub>2sub>O<sub>3sub>     CeO<sub>2sub>     flue gas    

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Title Author Date Type Operation

Catalytic activities and mechanism of formaldehyde oxidation over gold supported on MnO

Guanglong PANG,Donghui WANG,Yunhong ZHANG,Chunyan MA,Zhengping HAO

Journal Article

g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

Journal Article

Fabrication and photocatalytic ability of an Au/TiO<sub>2sub>

Fenghe Lv, Hua Wang, Zhangliang Li, Qi Zhang, Xuan Liu, Yan Su

Journal Article

Engineering a Coordinatively Unsaturated Au–O–Ti3+ Structure Toward Unprecedented H<sub>2sub> Efficiency for Low-Temperature Propene Epoxidation with H<sub>2sub> and O<sub>2sub>

Zhaoning Song, Hao Yan, Juncong Yuan, Hongfei Ma, Jianlin Cao, Yongxiang Wang, Qiang Wang, Chong Peng, Feng Deng, Xiang Feng, De Chen, Chaohe Yang, Yongkang Hu

Journal Article

Plasmonic Au nanoparticles supported on both sides of TiO2 hollow spheres for maximising photocatalytic

Jianwei Lu, Lan Lan, Xiaoteng Terence Liu, Na Wang, Xiaolei Fan

Journal Article

Preparation of biomass-derived carbon loaded with MnO as lithium-ion battery anode for improving its

Journal Article

Facile synthesis of α-MnO

Weixin ZHANG, Wenran ZHAO, Zaoyuan ZHOU, Zeheng YANG

Journal Article

Co-present Pb(II) accelerates the oxidation of organic contaminants by permanganate: Role of Pb(III)

Journal Article

Effects of oxidizing environment on digestate humification and identification of substances governing the dissolved organic matter (DOM) transformation process

Journal Article

Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

Journal Article

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

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

CO<sub>2sub> methanation and co-methanation of CO and CO<sub>2sub> over Mn-promoted Ni/Al<sub>2sub>O<sub>3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Journal Article

A Storage-Driven CO<sub>2sub> EOR for a Net-Zero Emission Target

Yueliang Liu, Zhenhua Rui

Journal Article

Al<sub>2sub>O<sub>3sub> and CeO<sub>2sub>-promoted MgO sorbents for CO<sub>2sub> capture at moderate

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

Journal Article