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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 Co<sub>3sub>O<sub>4sub>–CeO<sub>2sub> composite oxide catalyst was successfullybetween Co3+/Co2+ and Ce4+/Ce3+ redox pairs, than bulk CeO<sub>2sub> and/or Co<sub>3sub>O<sub>4sub>.conditions, 89.6% selectivity to KA-oil with a cyclohexane conversion of 5.8% was achieved over Co<sub>3sub>O<sub>4sub>–CeO<sub>2sub>.

Keywords： Co<sub>3sub>O<sub>4sub>–CeO<sub>2sub> composite oxides     cyclohexanone     cyclohexanol     ultrasonic-assisted    

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Multi-stage ammonia production for sorption selective catalytic reduction of NO

Chen ZHANG, Guoliang AN, Liwei WANG, Shaofei WU

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 840-851 doi: 10.1007/s11708-021-0797-1

Abstract: Sorption selective catalytic reduction of nitrogen oxides (NO<sub>xsub>) (sorption-SCR) hasever been proposed for replacing commercial urea selective catalytic reduction of NO<sub>xsubExcept for the single-stage ammonia production cycle with MnCl<sub>2sub>, other sorption-SCR strategiesall present overwhelming advantages over urea-SCR considering the much higher NO<sub>xsub>i>sub> technology.

Keywords： selective catalytic reduction (SCR)     nitrogen oxides (NO<sub>xsub>)     ammonia     composite sorbent    

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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.

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

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Metal-organic framework loaded manganese oxides as efficient catalysts for low-temperature selective

Minhua Zhang, Baojuan Huang, Haoxi Jiang, Yifei Chen

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 594-602 doi: 10.1007/s11705-017-1668-5

Abstract: A mild deposition method was used to fabricate Mn-based catalysts on a UiO-66 carrier for the selective catalytic reduction of NO by NH (NH -SCR). The catalyst with 8.5 wt-% MnO loading had the highest catalytic activity for NH -SCR with a wide temperature window (100–290 °C) for 90% NO conversion. Characterization of the prepared MnO /UiO-66 catalysts showed that the catalysts had the crystal structure and porosity of the UiO-66 carrier and that the manganese particles were well-distributed on the surface of the catalyst. X-ray photoelectron spectroscopy analysis showed that there are strong interactions between the MnO and the Zr oxide secondary building units of the UiO-66 which has a positive effect on the catalytic activity. The 8.5 wt-% MnO catalyst maintained excellent activity during a 24-h stability test and exhibited good resistance to SO poisoning.

Keywords： metal-organic framework     selective catalytic reduction     manganese oxides     deNO<sub>xsub>     SO<sub>2sub> resistance    

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On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

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 loadingshave been prepared for selective catalytic reduction of nitrogen oxides by ammonia.Co<sub>3sub>O<sub>4sub> can spontaneously disperse on HZSM-5 support with a monolayer dispersionBelow 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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High purity Mn

Xiaoqiang SHAN, Fenghua GUO, Wenqian XU, Xiaowei TENG

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 383-400 doi: 10.1007/s11708-017-0485-3

Abstract: Developing electrodes with high specific energy by using inexpensive manganese oxides is of great importance

Keywords： manganese oxides Mn<sub>5sub>O<sub>8sub>     high voltage     aqueous Na-ion storage    

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grown TiN/N-TiO composite for enhanced photocatalytic H evolution activity

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 721-731 doi: 10.1007/s11708-021-0766-8

Abstract: Titanium nitride (TiN) decorated N-doped titania (N-TiO<sub>2sub>) composite (TiN/N-TiO<sub>2sub>) is fabricated via an in situ nitridation using a hydrothermally synthesized TiO<sub>2sub>After the optimization of the reaction condition, the resultant TiN/N-TiO<sub>2sub> composite delivers, light absorption, energy band structure, element composition, and electrochemical behavior of the composite>2sub> composite photocatalysts for high-efficiency water splitting.

Keywords： photocatalytic H<sub>2sub> evolution     TiN/N-TiO<sub>2sub> composite     plasmonic effect     in-situ    

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All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1925-1936 doi: 10.1007/s11705-023-2344-6

Abstract: A leading star in photocatalysis has been revealed as lead-free Cs<sub>2sub>AgBiBr<sub>6sub> doubleIn this work, this photocatalytic process was facilitated by a unique TiO<sub>2sub>/Cs<sub>2sub>AgBiBr<sub>6sub> composite, which was identified as an S-cheme heterojunction.TiO<sub>2sub>/Cs<sub>2sub>AgBiBr<sub>6sub> composite was investigated for its structure and photocatalytic>2sub>/Cs<sub>2sub>AgBiBr<sub>6sub> composites, which will facilitate the generation of new ideas

Keywords： Cs<sub>2sub>AgBiBr<sub>6sub> nanocrystals     visible-light photocatalyst     Cs<sub>2sub>AgBiBr<sub>6sub>/TiO<sub>2sub> heterojunction    

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Molecular level understanding of CO<sub>2sub> capture in ionic liquid/polyimide composite membrane

Linlin You, Yandong Guo, Yanjing He, Feng Huo, Shaojuan Zeng, Chunshan Li, Xiangping Zhang, Xiaochun Zhang

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 141-151 doi: 10.1007/s11705-020-2009-7

Abstract: Ionic liquid (IL)/polyimide (PI) composite membranes demonstrate promise for use in CO separation applicationsHowever, few studies have focused on the microscopic mechanism of CO in these composite systems, whichincreasing IL concentrations up to 35 wt-% due to the decrease of the fractional free volume of the composite

Keywords： carbon dioxide     ionic liquid     6FDA-TeMPD     composite membrane     molecular dynamics simulation    

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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 NH<sub>3sub>-SCR reaction over spineloxides is carried out.

Keywords： Microwave field     Spinel oxides     NO<sub>xsub>     Selective catalytic reduction    

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TiO@palygorskite composite for the efficient remediation of oil spills via a dispersion-photodegradation

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1365-3

Abstract:

• A novel and multi-functional clay-based oil spill remediation system was constructed.

Keywords： Palygorskite     TiO<sub>2sub>     Pickering emulsion     Oil spill     Dispersion     Photodegradation    

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Design and operational considerations for selective catalytic reduction technologies at coal-fired boilers

Jeremy J. SCHREIFELS, Shuxiao WANG, Jiming HAO

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 98-105 doi: 10.1007/s11708-012-0171-4

Abstract: the heavy reliance on coal for electricity generation, emissions of air pollutants, such as nitrogen oxides

Keywords： nitrogen oxides (NO<sub>xsub>)     coal     selective catalytic reduction (SCR)     air pollution    

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NiCo2O4@quinone-rich N–C core–shell nanowires as composite electrode for electric double layer capacitor

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 373-386 doi: 10.1007/s11705-022-2223-6

Abstract: between their performance and the amount of carbon material loaded on the electrodes, in this work, NiCo<sub>2sub>O<sub>4sub> nanowires were firstly grown on the substrate of active carbon cloth to provideThen, the quinone-rich nitrogen-doped carbon shell structure was formed around NiCo<sub>2sub>O<sub>4sub> nanowires, and the obtained composite was used as electrode for electric double layer capacitorThe results showed that the composite electrode displayed an area-specific capacitance of 1794 mF∙cm<

Keywords： carbon cloth     NiCo<sub>2sub>O<sub>4sub> nanowires     core−shell structure     quinone-rich     electric double    

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Catalytic combustion of volatile organic compounds using perovskite oxides catalysts—a review

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1649-1676 doi: 10.1007/s11705-023-2324-x

Abstract: Next, the characteristics and catalytic performance of perovskite oxides as catalysts for VOC removalThe challenges and the prospects regarding the design of perovskite oxides catalysts for the catalytic

Keywords： perovskite oxides     volatile organic compounds     catalytic combustion     reaction mechanism    

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Antibacterial and anti-flaming PA6 composite with metathetically prepared nano AgCl@BaSO

Wei Zhang, Boren Xu, Caihong Gong, Chunwang Yi, Shen Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 340-350 doi: 10.1007/s11705-020-1942-9

Abstract: In this study, a facile and environmentally friendly method with low energy consumption for preparing nanoscale AgCl and BaSO co-precipitates (AgCl@BaSO co-precipitates) was developed based on the metathetical reaction. Then, the dried co-precipitates were melt-compounded with polyamide 6 (PA6) resins at a specified mass ratio in a twin-screw extruder. The results demonstrated that in the absence of any coating agent or carrier, the nanoparticles of AgCl@BaSO co-precipitates were homogeneously dispersed in the PA6 matrix. Further analysis showed that after the addition of AgCl@BaSO co-precipitates, the antibacterial performance, along with the flame-retardance and anti-dripping characteristics of PA6, was enhanced significantly. In addition, the PA6 composites possessed high spinnability in producing pre-oriented yarn.

Keywords： nano AgCl@BaSO<sub>4sub> co-precipitates     antibacterial     flame resistance     PA6 composite     PA6 yarn    

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Title Author Date Type Operation

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

Journal Article

Multi-stage ammonia production for sorption selective catalytic reduction of NO

Chen ZHANG, Guoliang AN, Liwei WANG, Shaofei WU

Journal Article

Promotion of transition metal oxides on the NH

Weiman Li, Haidi Liu, Yunfa Chen

Journal Article

Metal-organic framework loaded manganese oxides as efficient catalysts for low-temperature selective

Minhua Zhang, Baojuan Huang, Haoxi Jiang, Yifei Chen

Journal Article

On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

Journal Article

High purity Mn

Xiaoqiang SHAN, Fenghua GUO, Wenqian XU, Xiaowei TENG

Journal Article

grown TiN/N-TiO composite for enhanced photocatalytic H evolution activity

Journal Article

All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Journal Article

Molecular level understanding of CO<sub>2sub> capture in ionic liquid/polyimide composite membrane

Linlin You, Yandong Guo, Yanjing He, Feng Huo, Shaojuan Zeng, Chunshan Li, Xiangping Zhang, Xiaochun Zhang

Journal Article

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

Journal Article

TiO@palygorskite composite for the efficient remediation of oil spills via a dispersion-photodegradation

Journal Article

Design and operational considerations for selective catalytic reduction technologies at coal-fired boilers

Jeremy J. SCHREIFELS, Shuxiao WANG, Jiming HAO

Journal Article

NiCo2O4@quinone-rich N–C core–shell nanowires as composite electrode for electric double layer capacitor

Journal Article

Catalytic combustion of volatile organic compounds using perovskite oxides catalysts—a review

Journal Article

Antibacterial and anti-flaming PA6 composite with metathetically prepared nano AgCl@BaSO

Wei Zhang, Boren Xu, Caihong Gong, Chunwang Yi, Shen Zhang

Journal Article