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Effects of ancillary ligands in acceptorless benzyl alcohol dehydrogenation mediated by phosphine-free cobalt complexes

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3, Pages 314-325 doi: 10.1007/s11705-022-2219-2

Abstract: Herein, we synthesized a phosphine-free η5sup>-C5sub>Me5sub>-Co complex by usingThe improved performance among the class of η5sup>-C5sub>Me5sub>-Co complexes could>5sup>-C5sub>Me5sub>-Co complexes by a set of characterizations.>5sub>Me5sub>-Co moiety.The electron population demonstrated that the η5sup>-C5sub>Me5sub> ligand played

Keywords： acceptorless alcohol dehydrogenation η5sup>-C5sub>Me5sub>-Co metal–ligand cooperation

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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 dispersionreaction performance. 4% Co3sub>O4sub>/ZSM-5, the catalyst close to the monolayer dispersionIt is proposed the optimal Co3sub>O4sub>/ZSM-5 catalyst can be prepared by loading thecapacity 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>–sup> anions

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Pentazolate Anion Cyclo-N5sub>–sup>: Development of a New Energetic Material

Qiuhan Lin, Pengcheng Wang, Yuangang Xu, Ming Lu

Engineering 2020, Volume 6, Issue 9, Pages 964-966 doi: 10.1016/j.eng.2020.04.011

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Enhancing the aromatic selectivity of cyclohexane aromatization by CO2sub> coupling

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11, Pages 1801-1808 doi: 10.1007/s11705-023-2325-9

Abstract: Herein, CO2sub> is introduced into the cyclohexane conversion process on the HZSM-5 zeolite, whichsub>) selectivity of 48.2% can be obtained at the conditions of 2.7 MPa (CO2sub>), 450 °C, and1.7 h−1sup>, which is better than that without CO2sub> (aromatic selectivity = 43.2%).2sub>.13sup>C isotope labeling experimental results demonstrate that CO2sub> can enter into the

Keywords： aromatics carbon dioxide aromatization coupling reaction ZSM-5 zeolite

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PtHAK5, a candidate for mediating high-affinity K

Haili YANG, Weidan ZHANG, Weiwei CHAI, Wenying WANG, Li GAO, Jing ZHANG, Yongping WANG, Suo-Min WANG

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 1, Pages 108-117 doi: 10.15302/J-FASE-2018200

Abstract: The HAK5 K transporters generally modulate effective K acquisition in plants, especially under lowThe results showed PtHAK5 consisted of 784 amino acids and shared over 80% homology with the identifiedhigh-affinity K transporter HAK5 from other higher plants.In conclusion, PtHAK5 is a candidate for mediating high-affinity K uptake under low K conditions.

Keywords： K+sup> uptake PtHAK5 Puccinellia tenuiflora yeast complementation

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Removal of ammonium and nitrate through Anammox and FeS-driven autotrophic denitrification

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1674-4

Abstract:

● Simultaneous NH4sub>+sup>/NO3sub>–sup

Keywords： Anammox Denitrification FeS NH4sub>+sup>/NO3sub>−sup> Sulfammox

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The modification of titanium in mesoporous silica for Co-based Fischer–Tropsch catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8, Pages 1224-1236 doi: 10.1007/s11705-022-2139-1

Abstract: However, the increased titanium content inevitably resulted in the formation of anatase TiO 2subThe enhanced metal-support interactions were beneficial for the CO/H2sub> ratio at the activecobalt sites, which facilitated the formation of more C5+sub> hydrocarbons.

Keywords： Fischer–Tropsch synthesis titanium incorporation mesoporous silica metal-support interactions C5+sub> selectivity

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Facile controlled synthesis of hierarchically structured mesoporous Li4Ti5O12/C/rGO composites as high-performance

Cehuang FU, Shuiyun SHEN, Ruofei WU, Xiaohui YAN, Guofeng XIA, Junliang ZHANG

Frontiers in Energy 2022, Volume 16, Issue 4, Pages 607-612 doi: 10.1007/s11708-021-0798-0

Abstract: In this paper, a facile strategy is proposed to controllably synthesize mesoporous Li4sub>Ti5sub>O12sub>/C nanocomposite embedded in graphene matrix as lithium-ion battery anode via theco-assembly of Li4sub>Ti5sub>O12sub> (LTO) precursor, GO, and phenolic resin.

Keywords： Li4sub>Ti5sub>O12sub> phenolic-resin-based carbon mesoporous composite graphene

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Facile synthesis and enhanced visible-light photocatalytic activity of Ti

Xiaojie Zhang,Lei Wang,Shuqing Chen,Yi Huang,Zhuonan Song,Miao Yu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3, Pages 349-358 doi: 10.1007/s11705-015-1523-5

Abstract: structure directing agent, and inhibitor; the activity was evaluated using a probe reaction-photocatalytic CO

Keywords： Ti3+sup>-doped TiO2sub> photocatalytic CO2sub> conversion visible light irradiation

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Physical and chemical processes of wintertime secondary nitrate aerosol formation

Qi YING

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3, Pages 348-361 doi: 10.1007/s11783-011-0343-1

Abstract: The UCD/CIT model was modified to include a process analysis (PA) scheme for gas and particulate matter (PM) to study the formation of secondary nitrate aerosol during a stagnant wintertime air pollution episode during the California Regional PM /PM Air Quality Study (CRPAQS) where detailed measurements of PM components are available at a few sites. Secondary nitrate is formed in the urban areas from near the ground to a few hundred meters above the surface during the day with a maximum modeled net increase rate of 4 μg·m ·d during the study episode. The secondary nitrate formation rate in rural areas is lower due to lower NO . In the afternoon hours, near-surface temperature can be high enough to evaporate the particulate nitrate. In the nighttime hours, both the gas phase N O reactions with water vapor and the N O heterogeneous reactions with particle-bound water are important for secondary nitrate formation. The N O reactions are most import near the surface to a few hundred meters above surface with a maximum modeled net secondary nitrate increase rate of 1 μg·m ·d and are more significant in the rural areas where the O concentrations are high at night. In general, vertical transport during the day moves the nitrate formed near the surface to higher elevations. During the stagnant days, process analysis indicates that the nitrate concentration in the upper air builds up and leads to a net downward flux of nitrate through vertical diffusion and a rapid increase of surface nitrate concentration.

Keywords： secondary nitrate aerosol N2sub>O5sub> heterogeneous reaction process analysis

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Metal-Free Hexagonal Perovskite High-Energetic Materials with NH3sub>OH+sup>/NH2sub>NH3sub>+sup> as B-site Cations Article

Yu Shang, Zhi-Hong Yu, Rui-Kang Huang, Shao-Li Chen, De-Xuan Liu, Xiao-Xian Chen, Wei-Xiong Zhang, Xiao-Ming Chen

Engineering 2020, Volume 6, Issue 9, Pages 1013-1018 doi: 10.1016/j.eng.2020.05.018

Abstract: >2sub>dabco)B(ClO4sub>)3sub> (H2sub>dabco2+sup> = 1,4-diazabicyclo[2.2.2>+sup> and NH2sub>NH3sub>+sup> as B-site cations, respectively.Compared with their NH4sub>+sup> analog ((H2sub>dabco)(NH4sub>)(ClO4/sub>) = 375.3 °C), a high detonation velocity (D = 8.883 km·s‒1sup>), and(CL-20; Q = 6.23 kJ·g‒1sup>; Ispsub> = 264.8 s).

Keywords： Energetic materials Single explosive Solid propellant Metal-free Hexagonal perovskite

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Calculation of H2sub>+sup> Structural Parameters based on Hydrogen Atomic Protonized Model

Chen Jing

Strategic Study of CAE 2004, Volume 6, Issue 11, Pages 29-32

Abstract: >+sup> structural parameters.>esub>=2a0sub>,

Keywords： hydrogen molecule ion bond-length bond-energy force constant

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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 calcination temperatures by the incipient impregnation. The catalysts were evaluated for low temperature selective catalytic reduction (SCR) of NO with ammonia (NH ). The effects of O and SO on catalytic activity were also studied. The catalysts were characterized by specific surface areas (S ) and X–ray diffraction (XRD) methods. The experimental results showed that NO conversion changed significantly with the different V O loading and calcination temperature. With the V O loading increasing from 0 to 10 wt%, NO conversion increased significantly, but decreased at higher loading. The optimum calcination temperature was 400°C. The best catalyst yielded above 80% NO conversion in the reaction temperature range of 160°C–300°C. The formation of CeVO on the surface of catalysts caused the decrease of redox ability.

Keywords： V2sub>O5sub>/CeO2sub> catalysts NH3sub>-SCR (selective catalytic reduction

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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 for aqueous electrochemical energy storage (EES) using non-Li charge carriers such as Na-or K-ions. However, the energy density of aqueous EES devices is generally limited by their narrow thermodynamic potential window (~1.23 V). In this paper, the synthesis of high purity layered Mn O nanoparticles through solid state thermal treatment of Mn O spinel nanoparticles, resulting in a chemical formula of [Mn ][Mn O ], evidenced by Rietveld refinement of synchrotron-based X-ray diffraction, has been reported. The electro-kinetic analyses obtained from cyclic voltammetry measurements in half-cells have demonstrated that Mn O electrode has a large overpotential (~ 0.6 V) towards gas evolution reactions, resulting in a stable potential window of 2.5 V in an aqueous electrolyte in half-cell measurements. Symmetric full-cells fabricated using Mn O electrodes can be operated within a stable 3.0 V potential window for 5000 galvanostatic cycles, exhibiting a stable electrode capacity of about 103 mAh/g at a C-rate of 95 with nearly 100% coulombic efficiency and 96% energy efficiency.

Keywords： manganese oxides Mn5sub>O8sub> high voltage aqueous Na-ion storage

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Chemical deactivation of V

Xiaodong WU, Wenchao YU, Zhichun SI, Duan WENG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3, Pages 420-427 doi: 10.1007/s11783-013-0489-0

Abstract: V O -WO /TiO catalyst was poisoned by impregnation with NH Cl, KOH and KCl solution, respectively. The catalysts were characterized by X-ray diffraction (XRD), inductively coupled plasma (ICP), N physisorption, Raman, UV-vis, NH adsorption, temperature-programmed reduction of hydrogen (H -TPR), temperature-programmed oxidation of ammonia (NH -TPO) and selective catalytic reduction of NO with ammonia (NH -SCR). The deactivation effects of poisoning agents follow the sequence of KCl>KOH>>NH Cl. The addition of ammonia chloride enlarges the pore size of the titania support, and promotes the formation of highly dispersed V=O vanadyl which improves the oxidation of ammonia and the high-temperature SCR activity. K ions are suggested to interact with vanadium and tungsten species chemically, resulting in a poor redox property of catalyst. More importantly, potassium can reduce the Br?nsted acidity of catalysts and decrease the stability of Br?nsted acid sites significantly. The more severe deactivation of the KCl-treated catalyst can be mainly ascribed to the higher amount of potassium resided on catalyst.

Keywords： V2sub>O5sub>-WO3sub>/TiO2sub> potassium chloride poisoning reducibility acid

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Title Author Date Type Operation

Effects of ancillary ligands in acceptorless benzyl alcohol dehydrogenation mediated by phosphine-free cobalt complexes

Journal Article

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

Journal Article

Pentazolate Anion Cyclo-N5sub>–sup>: Development of a New Energetic Material

Qiuhan Lin, Pengcheng Wang, Yuangang Xu, Ming Lu

Journal Article

Enhancing the aromatic selectivity of cyclohexane aromatization by CO2sub> coupling

Journal Article

PtHAK5, a candidate for mediating high-affinity K

Haili YANG, Weidan ZHANG, Weiwei CHAI, Wenying WANG, Li GAO, Jing ZHANG, Yongping WANG, Suo-Min WANG

Journal Article

Removal of ammonium and nitrate through Anammox and FeS-driven autotrophic denitrification

Journal Article

The modification of titanium in mesoporous silica for Co-based Fischer–Tropsch catalysts

Journal Article

Facile controlled synthesis of hierarchically structured mesoporous Li4Ti5O12/C/rGO composites as high-performance

Cehuang FU, Shuiyun SHEN, Ruofei WU, Xiaohui YAN, Guofeng XIA, Junliang ZHANG

Journal Article

Facile synthesis and enhanced visible-light photocatalytic activity of Ti

Xiaojie Zhang,Lei Wang,Shuqing Chen,Yi Huang,Zhuonan Song,Miao Yu

Journal Article

Physical and chemical processes of wintertime secondary nitrate aerosol formation

Qi YING

Journal Article

Metal-Free Hexagonal Perovskite High-Energetic Materials with NH3sub>OH+sup>/NH2sub>NH3sub>+sup> as B-site Cations

Yu Shang, Zhi-Hong Yu, Rui-Kang Huang, Shao-Li Chen, De-Xuan Liu, Xiao-Xian Chen, Wei-Xiong Zhang, Xiao-Ming Chen

Journal Article

Calculation of H2sub>+sup> Structural Parameters based on Hydrogen Atomic Protonized Model

Chen Jing

Journal Article

Characterization and performance of V

Caiting LI, Qun LI, Pei LU, Huafei CUI, Guangming ZENG

Journal Article

High purity Mn

Xiaoqiang SHAN, Fenghua GUO, Wenqian XU, Xiaowei TENG

Journal Article

Chemical deactivation of V

Xiaodong WU, Wenchao YU, Zhichun SI, Duan WENG

Journal Article

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