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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/Co²⁺ and Ce⁴⁺/Ce³⁺ redox pairs, than bulk CeO₂ and/or Co₃O₄.conditions, 89.6% selectivity to KA-oil with a cyclohexane conversion of 5.8% was achieved over Co₃O₄–CeO₂.

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

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On the monolayer dispersion behavior of Co₃O₄ 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, Co₃O₄/ZSM-5 catalysts with different loadingsCo₃O₄ can spontaneously disperse on HZSM-5 support with a monolayer dispersionHowever, the formation of crystalline Co₃O₄ above the capacity is harmful to thereaction performance. 4% Co₃O₄/ZSM-5, the catalyst close to the monolayer dispersioncapacity amount of Co₃O₄ onto HZSM-5 support.

Keywords： Co₃O₄/ZSM-5 NO_x-SCR by NH₃ monolayer dispersionthreshold effect surface acid sites surface active O₂^– anions

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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 .CO capacity than Al O promoter.Both the Al O -MgO and CeO -MgO sorbents exhibited better cyclic stability than MgO over the course ofCompared 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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Rh₂O₃/hexagonal CePO₄ nanocatalysts for N₂O 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: 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 NO than the Rh O supported on CePO nanorods.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.

Keywords： Rh₂O₃ CePO₄ N₂O decomposition

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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: /sub>O₄ nanowires were firstly grown on the substrate of active carbon cloth to provide theThen, the quinone-rich nitrogen-doped carbon shell structure was formed around NiCo₂O₄ nanowires, and the obtained composite was used as electrode for electric double layer capacitorsup>–2 at the current density of 1 mA∙cm^–2./sup> at a power density of 180 mW∙cm^–3.

Keywords： carbon cloth NiCo₂O₄ nanowires core−shell structure quinone-rich electric double

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Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process

Bilyaminu Suleiman, Qinghua Yu, Yulong Ding, Yongliang Li

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4, Pages 727-735 doi: 10.1007/s11705-019-1823-2

Abstract: A form stable NaCl-Al O (50-50 wt-%) composite material for high temperature thermal energy storageThe fabricated composite achieved as high as 98.65% of the theoretical density.The NaCl-Al O composite also retained the chloride salt without leakage after 30 heating-cooling cyclesindicated congruent solubility of the alumina in chloride salt, excellent compatibility of NaCl with Al OThe composite was found to have fair mass losses due to volatilization.

Keywords： cold sintering process composite fabrication thermal energy storage phase change materials

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ZnFe₂O₄ deposited on BiOCl with exposed (001) and (010) facets for photocatalyticreduction of CO₂ in cyclohexanol

Guixian Song, Xionggang Wu, Feng Xin, Xiaohong Yin

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2, Pages 197-204 doi: 10.1007/s11705-016-1606-y

Abstract: ZnFe O -BiOCl composites were prepared by both hydrothermal and direct precipitation processes and theThe photocatalytic CO reduction activities over the hydrothermally prepared ZnFe O -BiOCl compositesThis is because compared to the direct-precipitation sample, the ZnFe O nanoparticles in the hydrothermalHigher CF and CH yields were obtained for the pure BiOCl and BiOCl composite samples with more exposedThe mechanism for the photocatalytic reduction of CO in cyclohexanol over ZnFe O -BiOCl composites with

Keywords： reduction of CO₂ cyclohexanol ZnFe₂O₄ deposited BiOCl facet composite

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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 effects of O and SO on catalytic activity were also studied.The experimental results showed that NO conversion changed significantly with the different V O loadingWith the V O loading increasing from 0 to 10 wt%, NO conversion increased significantly, but decreased

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

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ZnFe₂O₄/BiVO₄ Z-scheme heterojunction for efficient visible-light photocatalytic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11, Pages 1728-1740 doi: 10.1007/s11705-023-2322-z

Abstract: A novel Z-scheme ZnFe₂O₄/BiVO₄ heterojunction photocatalyst was successfullyCompared with the single-phase counterparts, ZnFe₂O₄/BiVO₄ demonstratedcharge separation efficiencies because of the Z-scheme transfer mechanism of electrons between the compositeConsequently, the 30% ZnFe₂O₄/BiVO₄ catalyst afforded a degradationMoreover, the as-synthesized ZnFe₂O₄/BiVO₄ heterojunctions were quite

Keywords： ZnFe₂O₄/BiVO₄ Z-scheme heterojunction photocatalytic degradation

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Pd/Fe3O4 supported on bio-waste derived cellulosic-carbon as a nanocatalyst for C–C coupling and electrocatalytic

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10, Pages 1514-1525 doi: 10.1007/s11705-022-2158-y

Abstract: Under mild reaction conditions, the Pd/Fe₃O₄@C magnetic nanocatalyst demonstratedAlso, the Pd/Fe₃O₄@C magnetic nanocatalyst exhibited excellent catalytic activityAlso, we explored the use of Pd/Fe₃O₄@C magnetic nanocatalyst as an electrocatalystInterestingly, the Pd/Fe₃O₄@C magnetic nanocatalyst exhibited better electrochemicalactivity compared to bare carbon and magnetite (Fe₃O₄ nanoparticles) with an overpotential

Keywords： bio-waste cellulosic-carbon Pd/Fe₃O₄ Hiyama cross-coupling hydrogen evolution

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Preparation and property characterization of PAA/Fe3O4 nanocomposite

WEI Shanshan, ZHANG Yi, XU Jiarui

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3, Pages 233-237 doi: 10.1007/s11705-007-0042-4

Abstract: PAA/FeO nanocomposites were prepared by mixing nano-FeOvent. The materials were characterized by transmission electron microscope (TEM), Fourier transform infrared spectroscope (FTIR), thermogravimetry analysis (TGA), dynamic ultra-micro hardness tester (DUMHT) and superconducting quantum interference device (SQUID) magnetometer. Results showed that PAA coordinated with nano-FeO to form a cross-linking structure. The presence of nano-FeO enhanced the thermal stability of the nanocomposite. The elasticity and hardness of the nanocomposite increased, and the indentation depth reduced with the increase of FeO content in the composites. The nanocomposites showed superparamagnetic properties at 300 K.

Keywords： magnetometer superparamagnetic ultra-micro thermogravimetry transmission

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Complete oxidation of methane on CoO-SnO catalysts

Xingfu TANG , Jiming HAO , Junhua LI ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3, Pages 265-270 doi: 10.1007/s11783-009-0019-2

Abstract: CoO-SnO hybrid oxides were prepared by the coprecipitation method and were used to oxidate methane (CHmolar ratio of Co/(Co+Sn) at 0.75 exhibited the highest catalytic activity among all the CoO-SnO hybrid oxidesCoO was the active species, and SnO acted as a support or a promoting component in the CoO-SnO hybrid oxidestemperature-programmed reduction (H-TPR) results demonstrated that the interaction between cobalt and tin oxides

Keywords： Co₃O₄-SnO₂ complete oxidation methane (CH₄)

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Enhanced 4-chlorophenol biodegradation by integrating FeO nanoparticles into an anaerobic reactor: Long-term

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1519-6

Abstract:

• 4-chlorophenol biodegradation could be enhanced in Fe₂O₃ coupled anaerobic system.

Keywords： Dechlorination Fe₂O₃ nanoparticles Electron transfer Microbial community

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The stabilization effect of Al₂O₃ on unconventional Pb/SiO₂ catalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1423-1429 doi: 10.1007/s11705-023-2315-y

Abstract: To enhance the stability, the traditional carrier Al₂O₃ with a small amount, wasintroduced into Pb/SiO₂ catalyst in this study.It has been proved that Al₂O₃ can inhibit the reduction of PbO, and weaken theAs a result, 3Al15Pb/SiO₂ catalyst exhibits a much higher stability up to more than 150 h./sub>O₃ addition was also proposed.

Keywords： Pb/SiO₂ Al₂O₃ propane dehydrogenation propene stability

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Thermodynamic Analysis and Reaction Model of Combustion Synthesis in Al-Cr₂O₃ Systemwith Al₂O₃ and Cr₂O₃ Diluents

Zhang Yancheng,Pan Ye,Zhang Chuan

Strategic Study of CAE 2004, Volume 6, Issue 6, Pages 63-67

Abstract:

The thermodynamic calculation and analysis of combustion synthesis reaction of Al - Cr2O3 system with AI2O3and Cr2O3 diluents were conducted, and the effects of reactionstarting temperature TO, diluents AI2O3 and Cr2O3 on the adiabatic combustion temperature

Keywords： cermet combustion synthesis Al - Cr₂O₃ system thermodynamics reaction model

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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

On the monolayer dispersion behavior of Co₃O₄ on HZSM-5 support: designing applicablecatalysts for selective catalytic reduction of nitrogen oxides by ammonia

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

Rh₂O₃/hexagonal CePO₄ nanocatalysts for N₂O decomposition

Huan Liu, Zhen Ma

Journal Article

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

Journal Article

Fabrication of form stable NaCl-Al2O3 composite for thermal energy storage by cold sintering process

Bilyaminu Suleiman, Qinghua Yu, Yulong Ding, Yongliang Li

Journal Article