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Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective CO electrolysis

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1772-1781 doi: 10.1007/s11705-022-2197-4

Abstract: Unlocking of the extremely inert C=O bond during electrochemical CO2 reduction demands subtle regulation on a key “resource”, protons, necessary for intermediate conversion but also readily trapped in water splitting, which is still challenging for developing efficient single-atom catalysts limited by their structural simplicity usually incompetent to handle this task. Incorporation of extra functional units should be viable. Herein, a proton deployment strategy is demonstrated via “atomic and nanostructured iron (A/N-Fe) pairs”, comprising atomically dispersed iron active centers spin-polarized by nanostructured iron carbide ferromagnets, to boost the critical protonation steps. The as-designed catalyst displays a broad window (300 mV) for CO selectivity > 90% (98% maximum), even outperforming numerous cutting-edge M–N–C systems. The well-placed control of proton dynamics by A/N-Fe can promote *COOH/*CO formation and simultaneously suppress H2 evolution, benefiting from the magnetic-proximity-induced exchange splitting (spin polarization) that properly adjusts energy levels of the Fe sites’ d-shells, and further those of the adsorbed intermediates’ antibonding molecular orbitals.

Keywords： electrolysis     single-atom catalysts     spin polarization     proton dynamics     in situ IR spectroscopy     kineticisotope effect    

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Diffusion process in enzyme–metal hybrid catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 921-929 doi: 10.1007/s11705-022-2144-4

Abstract: Thereafter, a kinetic model was developed and fitted to describe the proximity effect in hybrid catalystscatalytic efficiency of hybrid catalysts may arise from the decreased internal diffusion limitation, size effect

Keywords： enzyme–metal hybrid catalyst     internal diffusion     proximity effect     kinetic model    

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δN-stable isotope analysis of NH: An overview on analytical measurements, source sampling and its source

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1414-6

Abstract:

• Challenges in sampling of NH3 sources for d15N analysis are highlighted.

Keywords： Aerosol ammonium     Atmospheric gaseous ammonia     Isotope fingerprinting     Isotope-based source apportionment    

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biostimulated by ethanol during uranium (VI) bioremediation in contaminated sediment as shown by stable isotope

Mary Beth LEIGH,Wei-Min WU,Erick CARDENAS,Ondrej UHLIK,Sue CARROLL,Terry GENTRY,Terence L. MARSH,Jizhong ZHOU,Philip JARDINE,Craig S. CRIDDLE,James M. TIEDJE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 453-464 doi: 10.1007/s11783-014-0721-6

Abstract: Stable isotope probing (SIP) was used to identify microbes stimulated by ethanol addition in microcosms

Keywords： Stable isotope probing (SIP)     ethanol     acetate     uranium reduction     sediment     bioremediation    

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Electrocoagulation process for the treatment of metal-plating wastewater: Kinetic modeling and energy

Fatih Ilhan, Kubra Ulucan-Altuntas, Yasar Avsar, Ugur Kurt, Arslan Saral

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1152-1

Abstract: Adsorption capacities based on kinetic modeling were observed as Cr>Cu>Ni>Zn.the first minutes of the electrocoagulation process; thus, the current density did not have a great effectIn the process where kinetic modeling was applied, it was observed that the heavy metal removal mechanism

Keywords： Electrochemical treatment     Heavy metals     Kinetic modeling     Pseudo first order kinetic     Pseudo second orderkinetic    

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Determination of 27 pharmaceuticals and personal care products (PPCPs) in water: The benefit of isotope

Xueqi Fan, Jie Gao, Wenchao Li, Jun Huang, Gang Yu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1187-3

Abstract: • Isotope dilution method was developed for the determination of 27 PPCPs in water. • The establishedmethod was successfully applied to different types of water samples. • The correction effect of corresponding27 PPCPs in various water samples were extracted by solid phase extraction (SPE), and determined by isotopeThe matrix effect for all kinds of water samples was<22% and the method quantitation limits (MQLs) wereThe isotope dilution method seems to be of benefit when the extract has to be stored for long time before

Keywords： Pharmaceuticals and personal care products (PPCPs)     Isotopically labeled standard (ILSs)     Water     Solid-phase extraction (SPE)     LC-MS/MS    

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The effect of group structure on calculation of kinetic parameters of in-hospital neutron irradiator

Zhang LIang,Zhao Zhumin,Jiang Xinbiao,Chen Wei,Zhou Yongmao

Strategic Study of CAE 2012, Volume 14, Issue 8,   Pages 47-50

Abstract:

The kinetic parameters of in-hospital neutron irradiator mark 1 (IHNIeffective delayed neutron fraction and neutron generation time are calculated by CKPWC（calculating kineticThe kinetic parameters are calculated by CKPWC based on the results of WIMS and CITATION.The analysis based on the calculation indicates that the energy group structure has a significant effecton the result of kinetic parameter.

Keywords： IHNI-1 reactor     kinetic parameter     effective delayed neutron fraction     neutron generation time    

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Environment Isotope Method to Investigate the Bypass Abutment Seepage Flow in Xin'anjiang Right Dam

Chen Jiansheng,Liu Jiangang,Dong Haizhou,Chen Liang

Strategic Study of CAE 2004, Volume 6, Issue 1,   Pages 57-63

Abstract:

Environmental isotope 2H, 18O and 3H, temperature and electric conductivityEnvironmental isotope data on the right dam indicate the existence of bypass seepage flow in rock.

Keywords： environment isotope     by-pass seepage     precipitation     reservoir    

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Thermogravimetric kinetic analysis of

SUKARNI,SUDJITO,Nurkholis HAMIDI,Uun YANUHAR,I.N.G. WARDANA

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 125-133 doi: 10.1007/s11708-015-0346-x

Abstract: The kinetic parameters were evaluated by using Kissinger and Ozawa methods.

Keywords： Nannochloropsis oculata     combustion     kinetic parameters     air atmosphere     thermogravimetric    

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Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature and

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 263-276 doi: 10.1007/s11708-021-0791-7

Abstract: Four kinetic models (the Glarborg model, Shrestha model, Mei model, and Han model) were compared andPathway, sensitivity and radical pool analysis are conducted to find out the deep kinetic insight on

Keywords： ammonia mixed with syngas     laminar flame speed     kinetic model     sensitivity analysis     pathway analysis    

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Kinetic study of hydrodesulfurization of coker gas oil in a slurry reactor

Haiding XIANG, Tiefeng WANG

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 139-144 doi: 10.1007/s11705-013-1323-8

Abstract: A macro reaction kinetic model was established for the HDS of CGO in the slurry reactor.

Keywords： coker gas oil     hydrodesulfurization     slurry reactor     reaction kinetic model    

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photoreduction process in a laboratory-scale photoreactor by computational fluid dynamic and reaction kinetic

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1149-1163 doi: 10.1007/s11705-021-2096-0

Abstract: computational fluid dynamic model combined with the novel carbon dioxide photoreduction intrinsic reaction kineticdifferent carbon dioxide and water moisture partial pressures was then modeled based on the intrinsic kinetic

Keywords： carbon dioxide photoreduction     computational fluid dynamic simulation     kinetic model     Langmuir adsorption    

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for damage detection in functionally graded carbon nanotube-reinforced composite plates using modal kinetic

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1453-1479 doi: 10.1007/s11709-021-0767-z

Abstract: The elemental modal kinetic energy (MKE) values, calculated from natural frequencies and translational

Keywords： feed-forward neural networks     functionally graded carbon nanotube-reinforced composite plates     modal kinetic    

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Kinetic study of the methanol to olefin process on a SAPO-34 catalyst

Mehdi SEDIGHI,Kamyar KEYVANLOO

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 306-311 doi: 10.1007/s11705-014-1440-z

Abstract: In this paper, a new kinetic model for methanol to olefin process over SAPO-34 catalyst was developedThe kinetic model fits well to the experimental data obtained in a fixed bed reactor.Using this kinetic model, the effect of the most important operating conditions such as temperature,

Keywords： methanol to olefin     SAPO-34     kinetic modeling     elementary step    

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Effect of 2,5-dimethylfuran addition on ignition delay times of n-heptane at high temperatures

Zhenhua GAO, Erjiang HU, Zhaohua XU, Geyuan YIN, Zuohua HUANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 464-473 doi: 10.1007/s11708-019-0609-z

Abstract: A detailed blend chemical kinetic model resulting from the merging of validated kinetic models for theChemical kinetic analysis including radical pool analysis and flux analysis were conducted to explainThe kinetic analysis shows that at lower DMF blending levels, the two fuels have negligible impacts on

Keywords： ignition delay time     shock tube     kinetic model     2     5-dimethylfuran (DMF)     n-heptane    

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Title Author Date Type Operation

Spin polarization strategy to deploy proton resource over atomic-level metal sites for highly selective CO electrolysis

Journal Article

Diffusion process in enzyme–metal hybrid catalysts

Journal Article

δN-stable isotope analysis of NH: An overview on analytical measurements, source sampling and its source

Journal Article

biostimulated by ethanol during uranium (VI) bioremediation in contaminated sediment as shown by stable isotope

Mary Beth LEIGH,Wei-Min WU,Erick CARDENAS,Ondrej UHLIK,Sue CARROLL,Terry GENTRY,Terence L. MARSH,Jizhong ZHOU,Philip JARDINE,Craig S. CRIDDLE,James M. TIEDJE

Journal Article

Electrocoagulation process for the treatment of metal-plating wastewater: Kinetic modeling and energy

Fatih Ilhan, Kubra Ulucan-Altuntas, Yasar Avsar, Ugur Kurt, Arslan Saral

Journal Article

Determination of 27 pharmaceuticals and personal care products (PPCPs) in water: The benefit of isotope

Xueqi Fan, Jie Gao, Wenchao Li, Jun Huang, Gang Yu

Journal Article

The effect of group structure on calculation of kinetic parameters of in-hospital neutron irradiator

Zhang LIang,Zhao Zhumin,Jiang Xinbiao,Chen Wei,Zhou Yongmao

Journal Article

Environment Isotope Method to Investigate the Bypass Abutment Seepage Flow in Xin'anjiang Right Dam

Chen Jiansheng,Liu Jiangang,Dong Haizhou,Chen Liang

Journal Article

Thermogravimetric kinetic analysis of

SUKARNI,SUDJITO,Nurkholis HAMIDI,Uun YANUHAR,I.N.G. WARDANA

Journal Article

Experimental and kinetic study on laminar flame speeds of ammonia/syngas/air at a high temperature and

Journal Article

Kinetic study of hydrodesulfurization of coker gas oil in a slurry reactor

Haiding XIANG, Tiefeng WANG

Journal Article

photoreduction process in a laboratory-scale photoreactor by computational fluid dynamic and reaction kinetic

Journal Article

for damage detection in functionally graded carbon nanotube-reinforced composite plates using modal kinetic

Journal Article

Kinetic study of the methanol to olefin process on a SAPO-34 catalyst

Mehdi SEDIGHI,Kamyar KEYVANLOO

Journal Article

Effect of 2,5-dimethylfuran addition on ignition delay times of n-heptane at high temperatures

Zhenhua GAO, Erjiang HU, Zhaohua XU, Geyuan YIN, Zuohua HUANG

Journal Article