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A magnetic adsorbent based on salicylic acid-immobilized magnetite nano-particles for pre-concentration

Hossein Abdolmohammad-Zadeh, Arezu Salimi

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2, Pages 450-459 doi: 10.1007/s11705-020-1930-0

Abstract: In this research, an eco-friendly magnetic adsorbent based on Fe O /salicylic acid nanocomposite wasThe crystalline and morphological characterization of the prepared nanocomposite was performed by fieldThe nanocomposite was employed as a magnetic solid-phase extraction agent for separation of Cd(II) ionsFollowing elution with acetic acid (pH 3.5), the pre-concentrated analyte was quantified by flame atomic

Keywords： cadmium magnetic solid-phase extraction Fe3sub>O4sub> nanoparticles Fe3sub>O4sub>/salicylic acid nanocomposite flame atomic absorption spectrometry

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Effect of different acid anions on highly efficient Ce-based catalysts for selective catalytic reductionof NO with NH3sub>

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1399-1411 doi: 10.1007/s11705-023-2345-5

Abstract: Three kinds of Ce-based catalysts (CePO4sub>, CeVO4sub>, Ce2sub>(SO4sub>)> Ce2sub>(SO4sub>)3sub>, which is in agreement with their abilities of NH3sub>4sub>^3–, VO4sub>^3– and SO4sub>^2–4+, large NH3sub> adsorption>2sub> for Ce2sub>(SO4sub>)3sub>.

Keywords： CePO4sub> CeVO4sub> Ce2sub>(SO4sub>)3sub> selective catalytic reduction

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On the monolayer dispersion behavior of Co3sub>O4sub> on HZSM-5 support: designing applicable

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, Co3sub>O4sub>/ZSM-5 catalysts with different loadingsCo3sub>O4sub> can spontaneously disperse on HZSM-5 support with a monolayer dispersionIt has been revealed that the quantities of surface active oxygen (O2sub>^–) and acidreaction performance. 4% Co3sub>O4sub>/ZSM-5, the catalyst close to the monolayer dispersioncapacity amount of Co3sub>O4sub> onto HZSM-5 support.

Keywords： Co3sub>O4sub>/ZSM-5 NOxsub>-SCR by NH3sub> monolayer dispersionthreshold effect surface acid sites surface active O2sub>^– anions

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Synthesis of MnFe

Jian LI,Yue JIAO,Caichao WAN

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 1, Pages 116-120 doi: 10.15302/J-FASE-2017141

Abstract: In addition, the nanocomposite was easily actuated under the effect of an external magnetic field, revealingstrong magnetic responsiveness, and unique structural feature, this class of MnFe O /cellulose aerogel nanocomposite

Keywords： cellulose aerogel MnFe2sub>O4sub> magnetic responsiveness nanocomposite

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Rh2sub>O3sub>/hexagonal CePO4sub> nanocatalysts for N2sub>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： Rh2sub>O3sub> CePO4sub> N2sub>O decomposition

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Events and reaction mechanisms during the synthesis of an Al

M. ABDELLAHI, M. ZAKERI, H. BAHMANPOUR

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2, Pages 123-129 doi: 10.1007/s11705-013-1325-6

Abstract: An Al O -TiB nanocomposite was successfully synthesized by the high energy ball milling of Al, B OA nanocomposite powder with a mean crystallite size of 35–40 nm was obtained after milling for 15 h.

Keywords： ball milling nanocomposite Al2sub>O3sub> TiB2sub>

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Removal of P4sub>, PH3sub> and H2sub>S from Yellow Phosphoric Tail Gas by a Catalytic

Ning Ping,Hans-Jörg Bart,Wang Xueqian,Ma Liping,Chen Liang

Strategic Study of CAE 2005, Volume 7, Issue 6, Pages 27-35

Abstract: and activated carbon proved to be effective catalysts in the catalytic oxidation process (COP) for H2sub>S and PH3sub> removal.Under optimized operation conditions the product gas with a content of hydrogen sulfide ＜5 mg/m³, total phosphorus＜ 5 mg/m³ was obtained by using the COP process.

Keywords： catalyst catalytic oxidation H2sub>S P4sub> PH3sub> fixed bed

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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 Co3sub>O4sub>–CeO2sub> composite oxide catalyst was successfullyexhibited a higher selectivity to KA-oil, which was benefited from the synergistic effects between Co³⁺/Co²⁺ and Ce⁴⁺/Ce³⁺ redox pairs, than bulk CeO2sub> and/or Co3sub>O4sub>.>3sub>O4sub>–CeO2sub>.

Keywords： Co3sub>O4sub>–CeO2sub> composite oxides cyclohexanone cyclohexanol ultrasonic-assisted

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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 SrFeO3−δsub>–CaO∙MnO nanocomposite reduction by methane wasloss related to the partial oxidation is well fitted by the Avrami–Erofeyev equation with n = 3(A3 model) with an activation energy of 59.8 kJ∙mol^‒1.rate law for the partial oxidation includes a solid conversion term whose expression is given by the A3

Keywords： chemical looping reforming SrFeO3−δsub>/CaO·MnO nanocomposite reduction kinetics Avrami–Erofeyev

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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 (CH) in presence of oxygen. The CoO-SnO with a molar ratio of Co/(Co+Sn) at 0.75 exhibited the highest catalytic activity among all the CoO-SnO hybrid oxides. Experimental results showed that the catalysts were considerably stable in the CH combustion reaction, and were verified by X-ray photoelectron spectra (XPS). It was found that CoO was the active species, and SnO acted as a support or a promoting component in the CoO-SnO hybrid oxides. The surface area was not a major factor that affected catalytic activity. The hydrogen temperature-programmed reduction (H-TPR) results demonstrated that the interaction between cobalt and tin oxides accelerated the mobility of oxygen species of CoO-SnO, leading to higher catalytic activity.

Keywords： Co3sub>O4sub>-SnO2sub> complete oxidation methane (CH4sub>)

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Recent advances in special morphologic photocatalysts for NO removal

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1573-0

Abstract:

● Systematic information of recent progress in photocatalytic NO x sub> removal is provided.

Keywords： NOxsub> removal Photocatalyst Graphene C3sub>N4sub> Bi-based compounds

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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: >3sub>O4sub>@C) using a simple multi-step process under aerobic conditions.Under mild reaction conditions, the Pd/Fe3sub>O4sub>@C magnetic nanocatalyst demonstratedAlso, the Pd/Fe3sub>O4sub>@C magnetic nanocatalyst exhibited excellent catalytic activityAlso, we explored the use of Pd/Fe3sub>O4sub>@C magnetic nanocatalyst as an electrocatalystInterestingly, the Pd/Fe3sub>O4sub>@C magnetic nanocatalyst exhibited better electrochemical

Keywords： bio-waste cellulosic-carbon Pd/Fe3sub>O4sub> Hiyama cross-coupling hydrogen evolution

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Fe3sub>O4sub> encapsulated mesoporous silica nanospheres with tunable size and large void

Tingting LIU, Lihong LIU, Jian LIU, Shaomin LIU, Shi Zhang QIAO

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1, Pages 114-122 doi: 10.1007/s11705-014-1413-2

Abstract: Magnetic Fe O and mesoporous silica core-shell nanospheres with tunable size from 110–800 nm were synthesized via a one step self-assembly method. The morphological, structural, textural, and magnetic properties were well-characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, N adsorption-desorption and magnetometer. These nanocomposites, which possess high surface area, large pore volume and well-defined pore size, exhibit two dimensional hexagonal ( 6mm) mesostructures. Interestingly, magnetic core and mesoporous silica shell nanocomposites with large void pore (20 nm) on the shell were generated by increasing the ratio of ethanol/water. Additionally, the obtained nanocomposites combined magnetization response and large void pore, implying the possibility of applications in drug/gene targeting delivery. The cell internalization capacity of NH -functionalized nanocomposites in the case of cancer cells (HeLa cells) was exemplified to demonstrate their nano-medicine application.

Keywords： mesoporous silicas magnetic nanoparticles core-shell nanoparticles cell uptake

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Research and Development of High Performance Ceramics With Structural and Functional Properties Combined

Jiang Dongliang

Strategic Study of CAE 2003, Volume 5, Issue 2, Pages 35-39

Abstract:

This paper introduces some developing trends of new materials and material sciences, such as multifunction, composite, miniaturization, low cost manufacturing and analyses the basic properties and problems of processing of high performance ceramics nowadays. The paper briefly describes some special properties, possible application fields and mass production problems of ceramics with structural and functional properties combined, such as silicon carbide, Nd doped YAG, and Sialon with rare-earth elements added. Finally, proposed several topics (including processing sciences)of such kind of multifunction materials for future research and developing.

Keywords： structural and functional properties combined high performance ceramics SiC Nd - YAG RE-Si3sub>N4sub>

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Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1, Pages 38-46 doi: 10.1007/s11705-011-1167-z

Abstract: An effective method for the regeneration of thermally deactivated commercial monolith SCR catalysts was investigated. Two types of regenerated solutions, namely NH Cl (1 mol/L) and dilute H SO (0.5 mol/L), were employed to treat the used catalyst. The effects of temperature and the regeneration process on the structural and textural properties of the catalysts were determined by X-ray diffraction, scanning electron microscopy, N adsorption/desorption, elemental analysis and Fourier transform infrared spectroscopy. The results suggest that the anatase phase of the used catalyst is maintained after exposure to high temperatures. Some of the catalytic activity was restored after regeneration. The catalyst regenerated by aqueous NH Cl had a higher activity than that of the catalyst treated by dilute H SO . The main reason is that the NH generated from the decomposition of NH Cl at high temperatures can be adsorbed onto the catalyst which promotes the reaction. The aggregated V O were partially re-dispersed during the regeneration process, and the intrinsic oxidation of ammonia with high concentrations of O is a factor that suppresses the catalytic activity.

Keywords： V2sub>O5sub>-WO3sub>/TiO2sub> catalysts thermal deactivation regeneration NH4sub>Cl dilute H2sub>SO4sub> solution

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Title Author Date Type Operation

A magnetic adsorbent based on salicylic acid-immobilized magnetite nano-particles for pre-concentration

Hossein Abdolmohammad-Zadeh, Arezu Salimi

Journal Article

Effect of different acid anions on highly efficient Ce-based catalysts for selective catalytic reductionof NO with NH3sub>

Journal Article

On the monolayer dispersion behavior of Co3sub>O4sub> on HZSM-5 support: designing applicable

Journal Article

Synthesis of MnFe

Jian LI,Yue JIAO,Caichao WAN

Journal Article

Rh2sub>O3sub>/hexagonal CePO4sub> nanocatalysts for N2sub>O decomposition

Huan Liu, Zhen Ma

Journal Article

Events and reaction mechanisms during the synthesis of an Al

M. ABDELLAHI, M. ZAKERI, H. BAHMANPOUR

Journal Article

Removal of P4sub>, PH3sub> and H2sub>S from Yellow Phosphoric Tail Gas by a Catalytic

Ning Ping,Hans-Jörg Bart,Wang Xueqian,Ma Liping,Chen Liang

Journal Article

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

Journal Article

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

Journal Article

Complete oxidation of methane on CoO-SnO catalysts

Xingfu TANG , Jiming HAO , Junhua LI ,

Journal Article

Recent advances in special morphologic photocatalysts for NO removal

Journal Article

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

Journal Article

Fe3sub>O4sub> encapsulated mesoporous silica nanospheres with tunable size and large void

Tingting LIU, Lihong LIU, Jian LIU, Shaomin LIU, Shi Zhang QIAO

Journal Article

Research and Development of High Performance Ceramics With Structural and Functional Properties Combined

Jiang Dongliang

Journal Article

Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

Journal Article

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