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Characterization and catalytic activity of soft-templated NiO-CeO

Luciano Atzori, Maria Giorgia Cutrufello, Daniela Meloni, Barbara Onida, Delia Gazzoli, Andrea Ardu, Roberto Monaci, Maria Franca Sini, Elisabetta Rombi

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 251-268 doi: 10.1007/s11705-020-1951-8

Abstract: Nanosized NiO, CeO and NiO-CeO mixed oxides with different Ni/Ce molar ratios were prepared by theOn the catalysts submitted to the same reduction pretreatment adopted for the activity tests the surfaceNiO and CeO nanocrystals of about 4 nm in size were obtained, regardless of the Ni/Ce molar ratio.The Raman and X-ray photoelectron spectroscopy results proved the formation of defective sites at the NiO-CeOFourier transform infrared analyses of the reduced samples highlighted that, unlike metallic nickel, CeO

Keywords： soft template method     NiO-CeO2 catalysts     CO and CO2 co-methanation     synthetic natural    

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Catalytic combustion of methane over a highly active and stable NiO/CeO

Xiuhui Huang, Junfeng Li, Jun Wang, Zeqiu Li, Jiayin Xu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 534-545 doi: 10.1007/s11705-019-1821-4

Abstract: In this paper, a NiO/CeO catalyst with high catalytic performance in methane combustion was synthesizedAs a result, the mobility of bulk oxygen in CeO was increased.The presence of CeO prevented the aggregation of NiO, enhanced reduction by NiO, and provided more oxygenkinetics study indicated that the reaction order was about 1.07 for CH and about 0.10 for O over the NiO/CeO catalyst.

Keywords： methane combustion     NiO/CeO2 catalyst     interaction     oxygen vacancy     kinetic study    

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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: A series of CeO supported V O catalysts with various loadings were prepared with different calcinationThe catalysts were evaluated for low temperature selective catalytic reduction (SCR) of NO with ammoniaThe catalysts were characterized by specific surface areas (S ) and X–ray diffraction (XRD) methods.The formation of CeVO on the surface of catalysts caused the decrease of redox ability.

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

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Al2O3 and CeO2-promoted MgO sorbents for CO2 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 moderateThe CO sorption capacity of MgO was enhanced with the addition of either Al O or CeO .The highest capacity of 35.3 mg-CO /g-sorbent was obtained over the CeO -MgO sorbents at the optimalMoreover, the addition of CeO increased the basicity of MgO phase, resulting in more increase in theCompared to Al O , CeO is more effective for promoting the CO capacity of MgO.

Keywords： CO2 capture     MgO sorbents     Al2O3     CeO2     flue gas    

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Interface engineering for enhancing electrocatalytic oxygen evolution reaction of CoS/CeO heterostructures

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 376-383 doi: 10.1007/s11705-021-2062-x

Abstract: In this communication, a novel bijunction CoS/CeO2 electrocatalyst grown on carbon cloth isThe interface engineering of CoS and CeO2 facilitates a rapid charge transfer from CeO2 to CoS./sup> and low Tafel slope of 76.2 mV∙dec–1, and is superior to that of CoS (372 mV) and CeO2 (530 mV) counterparts.

Keywords： interface engineering     CoS/CeO2     electrodeposition     electrocatalyst     oxygen evolution reaction    

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Ultrasound-assisted co-precipitation synthesis of mesoporous Co3O4–CeO2 composite oxides for highly selective

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1211-1223 doi: 10.1007/s11705-022-2145-3

Abstract: In this study, a Co3O4–CeO2 composite oxide catalyst was successfully and Ce4+/Ce3+ redox pairs, than bulk CeO2 and/or Co33O4–CeO2.of different transition metals, this study provides a feasible strategy to design high-performance catalysts

Keywords： Co3O4–CeO2 composite oxides     cyclohexanone     cyclohexanol     ultrasonic-assisted    

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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 NH

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

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Cu-doped Bi/Bi2WO6 catalysts for efficient N2 fixation by photocatalysis

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1412-1422 doi: 10.1007/s11705-023-2312-1

Abstract: In this paper, Cu-doped Bi2WO6 was synthesized via a solvothermal method and appliedit in photocatalytic N2 immobilization.metallic Bi in the photocatalyst, indicating that the synthesized photocatalyst is actually Bi/Cu-Bi22 and most likely substituted the position of Bi3+.Cu did not affect the metallic Bi content, but mainly influenced the energy band structure of Bi2<

Keywords： Bi2WO6     Cu doping     work function     photocatalytic N2 fixation     charge    

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Methane partial oxidation over NiO-MgO/Ce

Piyawat PUE-ON, Vissanu MEEYOO, Thirasak RIRKSOMBOOON

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 3,   Pages 289-296 doi: 10.1007/s11705-013-1345-2

Abstract: method to produce hydrogen because it is an exothermic reaction to afford a suitable H /CO ratio of 2.In order to find suitable catalysts that prevent the carbon deposition, NiO-MgO/Ce Zr O (CZO) supportedcatalysts were prepared via the co-impregnation (C) and sequential incipient wetness impregnation (SThis is because the Ni surface was partially covered with MgO, and the strong interaction between NiOand NiMgO over CZO support led to the difficulty in reducing NiO to active Ni and thus less catalytic

Keywords： methane partial oxidation     NiO     ceria-zirconia     MgO     mixed oxide solid solution    

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Controlling the Reconstruction of Ni/CeO2 Catalyst during Reduction for Enhanced CO Methanation Article

Xinyu Cao,Tiancheng Pu,Bar Mosevitzky Lis,Israel E. Wachs,Chong Peng,Minghui Zhu,Yongkang Hu,

Engineering 2022, Volume 14, Issue 7,   Pages 94-99 doi: 10.1016/j.eng.2021.08.023

Abstract:

Reductive pretreatment is an important step for activating supported metal catalysts but has receivedmanipulating the activation conditions can potentially guide the rational design of other supported metal catalysts

Keywords： Nickel–ceria catalyst     Catalyst activation     Crystallinity     Methanation     In situ spectroscopy    

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Effects of MgO promoter on properties of Ni/Al2O3 catalysts for partial oxidation of methane to syngas

QIU Yejun, CHEN Jixiang, ZHANG Jiyan

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 167-171 doi: 10.1007/s11705-007-0031-7

Abstract: The effects of MgO promoter on the physico-chemical properties and catalytic performance of Ni/AlO catalystsIt was found that the MgO promoter benefited from the uniformity of nickel species in the catalysts,These results were related to the formation of NiO MgO solid solution and MgAlO spinel.Moreover, for the catalysts with a proper amount of MgO promoter, the nickel dispersiveness was enhancedthe reversed water gas shift reaction, which led to an increase in CO selectivity and a decrease in H2

Keywords： excessive     selectivity     decrease     dispersiveness     physico-chemical    

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Electro-catalytic activity of CeO modified graphite felt for carbamazepine degradation via E-peroxone

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1410-x

Abstract:

•CeOx/GF-EP process had the better degradation efficiency

Keywords： E-peroxone     CeOx     Graphite felt     Carbamazepine     Mineralization    

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Effects of preparation methods on the activity of CuO/CeO

Huanhuan Shang, Xiaoman Zhang, Jing Xu, Yifan Han

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 603-612 doi: 10.1007/s11705-017-1661-z

Abstract: CO oxidation has been investigated on three CuO/CeO catalysts prepared by impregnation, co-precipitationcatalyst prepared by impregnation has more highly dispersed CuO and stronger interactions between CuO and CeOexists in the catalyst prepared by the mechanical mixing method due to the separate phases of CuO and CeO, resulting in its lowest activity among the three catalysts.

Keywords： CuO/CeO2     CO oxidation     interfaces     structure-performance relationship     active sites    

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Size and shape effects of MnFeO nanoparticles as catalysts for reductive degradation of dye pollutants

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5,   Pages 108-171 doi: 10.1007/s11783-021-1396-4

Abstract: Herein, we successfully synthesized three kinds of MnFe2O4 NPs with distinctivesizes and shapes as catalysts for reductive degradation of methylene blue, rhodamine 6G, rhodamine BIt was found that the catalytic activities were dependent on the size and shape of the MnFe22O4 NPs could be readily recovered by a magnet and reusedThe size and shape effects of MnFe2O4 nanoparticles demonstrated in this work not

Keywords： Dye degradation     MnFe2O4 nanoparticles     Size and shape-control    

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Mechanical properties characterization of different types of masonry infill walls

André FURTADO, Hugo RODRIGUES, António ARÊDE, Humberto VARUM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 411-434 doi: 10.1007/s11709-019-0602-y

Abstract: It is remarkable, the recent advances concerning the development of numerical modeling frameworks to simulate the infill panels’ seismic behavior. However, there is a lack of experimental data of their mechanical properties, which are of full importance to calibrate the numerical models. The primary objective of this paper is to present an extensive experimental campaign of mechanical characterization tests of infill masonry walls made with three different types of masonry units: lightweight vertical hollow concrete blocks and hollow clay bricks. Four different types of experimental tests were carried out, namely: compression strength tests, diagonal tensile strength tests, and flexural strength tests parallel and perpendicular to the horizontal bed joints. A total amount of 80 tests were carried out and are reported in the present paper. The second objective of this study was to compare the mechanical properties of as-built and existing infill walls. The results presented and discussed herein, will be in terms of strain-stress curves and damages observed within the tests. It was observed a fragile behavior in the panels made with hollow clay horizontal bricks, without propagation of cracks. The plaster increased the flexural strength by 57%.

Keywords： masonry infill walls     experimental characterization     compression strength     shear diagonal strength     flexural strength    

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Title Author Date Type Operation

Characterization and catalytic activity of soft-templated NiO-CeO

Luciano Atzori, Maria Giorgia Cutrufello, Daniela Meloni, Barbara Onida, Delia Gazzoli, Andrea Ardu, Roberto Monaci, Maria Franca Sini, Elisabetta Rombi

Journal Article

Catalytic combustion of methane over a highly active and stable NiO/CeO

Xiuhui Huang, Junfeng Li, Jun Wang, Zeqiu Li, Jiayin Xu

Journal Article

Characterization and performance of V

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

Journal Article

Al2O3 and CeO2-promoted MgO sorbents for CO2 capture at moderate

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

Journal Article

Interface engineering for enhancing electrocatalytic oxygen evolution reaction of CoS/CeO heterostructures

Journal Article

Ultrasound-assisted co-precipitation synthesis of mesoporous Co3O4–CeO2 composite oxides for highly selective

Journal Article

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

Journal Article

Cu-doped Bi/Bi2WO6 catalysts for efficient N2 fixation by photocatalysis

Journal Article

Methane partial oxidation over NiO-MgO/Ce

Piyawat PUE-ON, Vissanu MEEYOO, Thirasak RIRKSOMBOOON

Journal Article

Controlling the Reconstruction of Ni/CeO2 Catalyst during Reduction for Enhanced CO Methanation

Xinyu Cao,Tiancheng Pu,Bar Mosevitzky Lis,Israel E. Wachs,Chong Peng,Minghui Zhu,Yongkang Hu,

Journal Article

Effects of MgO promoter on properties of Ni/Al2O3 catalysts for partial oxidation of methane to syngas

QIU Yejun, CHEN Jixiang, ZHANG Jiyan

Journal Article

Electro-catalytic activity of CeO modified graphite felt for carbamazepine degradation via E-peroxone

Journal Article

Effects of preparation methods on the activity of CuO/CeO

Huanhuan Shang, Xiaoman Zhang, Jing Xu, Yifan Han

Journal Article

Size and shape effects of MnFeO nanoparticles as catalysts for reductive degradation of dye pollutants

Journal Article

Mechanical properties characterization of different types of masonry infill walls

André FURTADO, Hugo RODRIGUES, António ARÊDE, Humberto VARUM

Journal Article