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Fe-Mn-sepiolite as an effective heterogeneous Fenton-like catalyst for the decolorization of reactive

Chengyuan SU,Weiguang LI,Xingzhe LIU,Xiaofei HUANG,Xiaodan YU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 37-45 doi: 10.1007/s11783-014-0729-y

Abstract: of the decolorization of reactive brilliant blue in an aqueous solution using Fe-Mn-sepiolite as a heterogeneousFenton-like catalyst has been performed.The Fourier transform infrared (FTIR) spectra of the catalyst showed bending vibrations of the Fe-O.The X-ray diffraction (XRD) patterns of the catalyst showed characteristic diffraction peaks of α-FeWhen the reaction conditions were catalyst dosage= 0.4 g, [H O ]= 0.3 mL, pH= 2.5, [reactive brilliant

Keywords： Fe-Mn-sepiolite catalyst     heterogeneous Fenton-like     reactive brilliant blue     homogeneous precipitation    

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Direct synthesis of diphenyl carbonate over heterogeneous catalyst: effects of structure of substitutedperovskite carrier on the catalyst activities

WU Guangwen, JIN Fang, WU Yuxin, ZHANG Guangxu, LI Dinghuo, WANG Cunwen, MA Peisheng

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 59-64 doi: 10.1007/s11705-007-0012-x

Abstract: The perovskite-type compound LaMnO was substituted for the part of La in position A and for the part of Mn in position B by citrate method. The phases were detected by X-ray diffraction. Powder morphologies were scanned by scanning electron microscopy. The valence of atoms was determined by X-ray photoelectron spectroscopy. It was found that the perovskite can form crystal defect and increase the proportion of high valence B element by doping. Active component Pd was loaded on various perovskite supports for synthesis of diphenyl carbonate. The results showed that the activities of catalysts in which supports have crystal defect by substitution were higher. It can be concluded that perovskite with defect structure by doping could lead to the formation of oxygen vacancy where the lattice oxygen became exchangeable with the oxygen gas. Also, this improved the redox process of the carrier by transferring electrons and activities of catalysts.

Keywords： photoelectron spectroscopy     diphenyl carbonate     proportion     diffraction     perovskite    

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Computational design of heterogeneous catalysts and gas separation materials for advanced chemical processing

Huaiwei Shi, Teng Zhou

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 49-59 doi: 10.1007/s11705-020-1959-0

Abstract: This article selectively focuses on two important process functional materials, namely heterogeneouscatalyst and gas separation agent.

Keywords： heterogeneous catalyst     gas separation     solvent     porous adsorbent     material screening and design    

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A review on sustainable reuse applications of Fenton sludge during wastewater treatment

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-021-1511-6

Abstract:

• The sustainable approaches related to Fenton sludge reuse systems are summarized.

Keywords： Fenton sludge     Heavy metals     Coagulant     Iron source     Heterogeneous catalyst    

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Transesterification of soybean oil to biodiesel over kalsilite catalyst

Guang WEN, Zifeng YAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 325-329 doi: 10.1007/s11705-010-0574-x

Abstract: The transesterification reaction of soybean oil with methanol over kalsilite-based heterogeneous catalystskinematic viscosity of 3.84 cSt were achieved at a temperature of only 120°C over this lithium modified catalystThe test of this lithium modified catalyst in pellet form in a laboratory-scale fixed-bed reactor showed

Keywords： kalsilite     heterogeneous catalyst     transesterification     biodiesel    

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Degradation of antipyrine in the Fenton-like process with a La-doped heterogeneous catalyst

Shicheng Wei, Cuiping Zeng, Yaobin Lu, Guangli Liu, Haiping Luo, Renduo Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1149-9

Abstract: Abstract A La-doped Co-Cu-Fe catalyst was synthesized for the antipyrine (ANT) removal.The La-doped catalyst had higher ANT removal than the control (95% vs. 54%).La reduced the particle size and increased the specific surface area of catalyst.removal in wastewater using the Fenton-like process with the catalyst.Our La-doped catalyst should have great potential to remove antipyrine in wastewater using the heterogeneous

Keywords： Antipyrine     Lanthanum     Catalyst     Fenton-like process    

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Carbon nanotubes-incorporated MIL-88B-Fe as highly efficient Fenton-like catalyst for degradation of

Hang Zhang, Shuo Chen, Haiguang Zhang, Xinfei Fan, Cong Gao, Hongtao Yu, Xie Quan

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 2, doi: 10.1007/s11783-019-1101-z

Abstract:

CNTs were incorporated into MIL-88B-Fe to get a new Fenton-like catalyst

Keywords： Heterogeneous Fenton-like catalysts     MIL-88B-Fe     CNTs     Organic pollutants     Mechanism    

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Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1343-9

Abstract:

• Microalgae oil application for biodiesel synthesis is discussed.

Keywords： Biodiesel     Heterogeneous catalysis     Transesterification     Microalgae oil    

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Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 566-583 doi: 10.1007/s11709-023-0905-x

Abstract: The analysis of the bearing capacity of strip footings sited near an excavation is critical in geotechnics. In this study, the effects of the geometrical features of the excavation and the soil strength properties on the seismic bearing capacity of a strip footing resting on an excavation were evaluated using the lower and upper bounds of the finite element limit analysis method. The effects of the setback distance ratio (L/B), excavation height ratio (H/B), soil strength heterogeneity (kB/cu), and horizontal earthquake coefficient (kh) were analyzed. Design charts and tables were produced to clarify the relationship between the undrained seismic bearing capacity and the selected parameters.

Keywords： excavation     finite element limit analysis     heterogeneous soil     strip footing     undrained bearing capacity    

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Precursor-driven structural tailoring of iron oxychloride for enhanced heterogeneous Fenton activity

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1533-1543 doi: 10.1007/s11705-023-2330-z

Abstract: Iron oxychloride (FeOCl) is a unique layered material with tunable electronic properties. The conventional synthetic route of chemical vapor transition involves a thermodynamics-driven gas–solid interfacial reaction which often generates macroscopic crystals with stable facets. In this study, through analyzing the effects of the synthetic parameters on the FeOCl synthesis, we discovered the dominant contribution of the α-Fe2O3 precursors on the chemical property of the FeOCl product, and subsequently developed a highly-controllable synthetic route of tailoring the FeOCl structures into small sizes and exposed high-energy facets via a facile and scalable mechanical-chemical approach. The synthesized products could be systematically tuned by the ball-milling conditions of the α-Fe2O3 precursors. With increased milling time, the FeOCl crystallites demonstrated reduced sizes and more exposed (110) facets. Intriguingly, these small-sized FeOCl catalysts exhibited much faster Fenton-like kinetics than the pristine macroscopic FeOCl materials. Specifically, FeOCl catalysts with a 12-hour milling time showed nearly 39 times higher efficiency toward phenol degradation than the pristine FeOCl. The structure-reactivity relationship was further elucidated using the combinatory analysis via density functional theory calculation, electron paramagnetic resonance and radical quenching probe experiments. This work provides a rationale for tailoring the surface structures of FeOCl crystallites for potential applications in environmental catalysis.

Keywords： FeOCl     mechanical activation     heterogeneous Fenton reaction     ball milling    

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of herding behavior of tradable green certificate market players on market efficiency: Insights from heterogeneous

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 266-285 doi: 10.1007/s11708-021-0752-1

Abstract: This paper proposes and simulates an artificial TGC market model which contains heterogeneous agents,

Keywords： tradable green certificate     herding behavior     evolution     heterogeneous agent model     complex network    

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Using heterogeneous patent network features to rank and discover influential inventors

Yong-ping DU,Chang-qing YAO,Nan LI

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 7,   Pages 568-578 doi: 10.1631/FITEE.1400394

Abstract: entity sorting algorithms are implemented in a homogeneous network, and they are not applicable to a heterogeneouspresent an iteration algorithm called inventor-ranking, to sort the influences of patent inventors in heterogeneousthe traditional methods such as PageRank, our approach takes full advantage of the information in the heterogeneous

Keywords： Heterogeneous patent network     Influence     Rule-based ranking    

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Modeling nanostructured catalyst layer in PEMFC and catalyst utilization

Jiejing ZHANG, Pengzhen CAO, Li XU, Yuxin WANG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 297-302 doi: 10.1007/s11705-011-1201-1

Abstract: A lattice model of the nanoscaled catalyst layer structure in proton exchange membrane fuel cells (PEMFCThe model takes into account all the four components in a typical PEMFC catalyst layer: platinum (Pt)elemental voxels in the lattice were set fine enough so that each average sized Pt particulate in Pt/C catalystCatalyst utilization in the modeled catalyst layer was calculated by counting up the number of facets, on catalyst utilization were investigated and discussed.

Keywords： catalyst layer     PEM fuel cell     lattice model     Monte Carlo method     catalyst utilization    

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Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 433-438 doi: 10.1007/s11465-012-0336-1

Abstract: (PET), the displacement and stress components in a thick-walled spherical pressure vessels made of heterogeneous

Keywords： thick-walled spherical vessels     heterogeneous materials     FGM     FEM     parabolic varying properties    

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Oxidant or catalyst for oxidation?

Jianzhi Huang, Huichun Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1158-8

Abstract: Manganese oxides (MnOx) have been demonstrated to be effective materials to activate Oxone (i.e., PMS) to degrade various contaminants. However, the contribution of direct oxidation by MnOx to the total contaminant degradation under acidic conditions was often neglected in the published work, which has resulted in different and even conflicting interpretations of the reaction mechanisms. Here, the role of MnOx (as both oxidants and catalysts) in the activation of Oxone was briefly discussed. The findings offered new insights into the reaction mechanisms in PMS-MnOx and provided a more accurate approach to examine contaminant degradation for water/wastewater treatment.

Keywords： Peroxymonosulfate     Manganese oxides     Catalyst     Oxidant    

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Title Author Date Type Operation

Fe-Mn-sepiolite as an effective heterogeneous Fenton-like catalyst for the decolorization of reactive

Chengyuan SU,Weiguang LI,Xingzhe LIU,Xiaofei HUANG,Xiaodan YU

Journal Article

Direct synthesis of diphenyl carbonate over heterogeneous catalyst: effects of structure of substitutedperovskite carrier on the catalyst activities

WU Guangwen, JIN Fang, WU Yuxin, ZHANG Guangxu, LI Dinghuo, WANG Cunwen, MA Peisheng

Journal Article

Computational design of heterogeneous catalysts and gas separation materials for advanced chemical processing

Huaiwei Shi, Teng Zhou

Journal Article

A review on sustainable reuse applications of Fenton sludge during wastewater treatment

Journal Article

Transesterification of soybean oil to biodiesel over kalsilite catalyst

Guang WEN, Zifeng YAN

Journal Article

Degradation of antipyrine in the Fenton-like process with a La-doped heterogeneous catalyst

Shicheng Wei, Cuiping Zeng, Yaobin Lu, Guangli Liu, Haiping Luo, Renduo Zhang

Journal Article

Carbon nanotubes-incorporated MIL-88B-Fe as highly efficient Fenton-like catalyst for degradation of

Hang Zhang, Shuo Chen, Haiguang Zhang, Xinfei Fan, Cong Gao, Hongtao Yu, Xie Quan

Journal Article

Application of heterogeneous catalysis to biodiesel synthesis using microalgae oil

Journal Article

Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation

Journal Article

Precursor-driven structural tailoring of iron oxychloride for enhanced heterogeneous Fenton activity

Journal Article

of herding behavior of tradable green certificate market players on market efficiency: Insights from heterogeneous

Journal Article

Using heterogeneous patent network features to rank and discover influential inventors

Yong-ping DU,Chang-qing YAO,Nan LI

Journal Article

Modeling nanostructured catalyst layer in PEMFC and catalyst utilization

Jiejing ZHANG, Pengzhen CAO, Li XU, Yuxin WANG

Journal Article

Elastic analysis of heterogeneous thick-walled spherical pressure vessels with parabolic varying properties

Keyhan KARAMI, Majid ABEDI, Mohammad ZAMANI NEJAD, Mohammad Hassan LOTFIAN

Journal Article

Oxidant or catalyst for oxidation?

Jianzhi Huang, Huichun Zhang

Journal Article