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CO2 capture 19

PM2.5 16

TiO2 14

photocatalysis 11

CO2 9

adsorption 8

CO2 emissions 7

Al2O3 6

HZSM-5 6

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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 η<sup>5sup>-C<sub>5sub>Me<sub>5sub>-Co complex by usingThe improved performance among the class of η<sup>5sup>-C<sub>5sub>Me<sub>5sub>-Co complexes could>5sup>-C<sub>5sub>Me<sub>5sub>-Co complexes by a set of characterizations.>5sub>Me<sub>5sub>-Co moiety.The electron population demonstrated that the η<sup>5sup>-C<sub>5sub>Me<sub>5sub> ligand played

Keywords: acceptorless alcohol dehydrogenation     η<sup>5sup>-C<sub>5sub>Me<sub>5sub>-Co     metal–ligand cooperation    

On the monolayer dispersion behavior of Co<sub>3sub>O<sub>4sub> 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, Co<sub>3sub>O<sub>4sub>/ZSM-5 catalysts with different loadingsCo<sub>3sub>O<sub>4sub> can spontaneously disperse on HZSM-5 support with a monolayer dispersionreaction performance. 4% Co<sub>3sub>O<sub>4sub>/ZSM-5, the catalyst close to the monolayer dispersionIt is proposed the optimal Co<sub>3sub>O<sub>4sub>/ZSM-5 catalyst can be prepared by loading thecapacity 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><sup>–sup> anions    

Pentazolate Anion Cyclo-N<sub>5sub><sup>–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

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 Li<sub>4sub>Ti<sub>5sub>O<sub>12sub>/C nanocomposite embedded in graphene matrix as lithium-ion battery anode via theco-assembly of Li<sub>4sub>Ti<sub>5sub>O<sub>12sub> (LTO) precursor, GO, and phenolic resin., a phenolic-resin-based carbon shell, and a porous frame constructed by rGO, can be denoted as LTO/C/hierarchical structure, including a high surface area and a high electric conductivity, the mesoporous LTO/C/

Keywords: Li<sub>4sub>Ti<sub>5sub>O<sub>12sub>     phenolic-resin-based carbon     mesoporous composite     graphene    

Enhancing the aromatic selectivity of cyclohexane aromatization by CO<sub>2sub> coupling

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

Abstract: Herein, CO<sub>2sub> is introduced into the cyclohexane conversion process on the HZSM-5 zeolite, whichBy optimizing the reaction conditions, an improved aromatic (benzene, toluene, xylene, and C<sub>9+sub>) selectivity of 48.2% can be obtained at the conditions of 2.7 MPa (CO<sub>2sub>), 450 °C, and1.7 h<sup>−1sup>, which is better than that without CO<sub>2sub> (aromatic selectivity = 43.2%).<sup>13sup>C isotope labeling experimental results demonstrate that CO<sub>2sub> can enter into the

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

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 NH<sub>4sub><sup>+sup>/NO<sub>3sub><sup>–sup

Keywords: Anammox     Denitrification     FeS     NH<sub>4sub><sup>+sup>/NO<sub>3sub><sup>−sup>     Sulfammox    

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 <sub>2subThe enhanced metal-support interactions were beneficial for the CO/H<sub>2sub> ratio at the activecobalt sites, which facilitated the formation of more C<sub>5+sub> hydrocarbons.

Keywords: Fischer–Tropsch synthesis     titanium incorporation     mesoporous silica     metal-support interactions     C<sub>5+sub> selectivity    

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     N<sub>2sub>O<sub>5sub> heterogeneous reaction     process analysis    

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: 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.

Keywords: V<sub>2sub>O<sub>5sub>/CeO<sub>2sub> catalysts     NH<sub>3sub>-SCR (selective catalytic reduction    

An electrochemical process that uses an Fe

Chaojie Jiang, Lifen Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0860-z

Abstract: A bio-electrochemical fuel cell reactor with cathodic Fe /TiO generates electricity. It destroys recalcitrant pollutants in cathode chamber without photocatalysis. Fe /TiO generates reactive oxygenated species in the dark or under photocatalysis. Cathodic produced ROS (hydroxy radical/superoxide radical) can degrade tetracycline or dyes. Electricity generation is enhanced by semiconductor catalyzed cathodic degradation of pollutants. In this study, a new water treatment system that couples (photo-) electrochemical catalysis (PEC or EC) in a microbial fuel cell (MFC) was configured using a stainless-steel (SS) cathode coated with Fe /TiO . We examined the destruction of methylene blue (MB) and tetracycline. Fe /TiO was prepared using a chemical reduction-deposition method and coated onto an SS wire mesh (500 mesh) using a sol technique. The anode generates electricity using microbes (bio-anode). Connected via wire and ohmic resistance, the system requires a short reaction time and operates at a low cost by effectively removing 94% MB (initial concentration 20 mg·L ) and 83% TOC/TOC under visible light illumination (50 W; 1.99 mW·cm for 120 min, MFC-PEC). The removal was similar even without light irradiation (MFC-EC). The of the MFC-PEC system was approximately 0.675 kWh·m ·order , whereas that of the MFC-EC system was zero. The system was able to remove 70% COD in tetracycline solution (initial tetracycline concentration 100 mg·L ) after 120 min of visible light illumination; without light, the removal was 15% lower. The destruction of MB and tetracycline in both traditional photocatalysis and photoelectrocatalysis systems was notably low. The electron spin-resonance spectroscopy (ESR) study demonstrated that ·OH was formed under visible light, and ·O was formed without light. The bio-electricity-activated O and ROS (reactive oxidizing species) generation by Fe /TiO effectively degraded the pollutants. This cathodic degradation improved the electricity generation by accepting and consuming more electrons from the bio-anode.

Keywords: Bio-anode     Photocatalytic cathode     Fe<sup>0sup>/TiO<sub>2sub>     ESR     Dye and antibiotics     Advanced oxidation    

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: V<sub>2sub>O<sub>5sub>-WO<sub>3sub>/TiO<sub>2sub>     potassium chloride     poisoning     reducibility     acid    

Metal-Free Hexagonal Perovskite High-Energetic Materials with NH<sub>3sub>OH<sup>+sup>/NH<sub>2sub>NH<sub>3sub><sup>+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(ClO<sub>4sub>)<sub>3sub> (H<sub>2sub>dabco<sup>2+sup> = 1,4-diazabicyclo[2.2.2>+sup> and NH<sub>2sub>NH<sub>3sub><sup>+sup> as B-site cations, respectively.Compared with their NH<sub>4sub><sup>+sup> analog ((H<sub>2sub>dabco)(NH<sub>4sub>)(ClO<sub>4/sub>) = 375.3 °C), a high detonation velocity (D = 8.883 km·s<sup>‒1sup>), andSimilarly, DAP-6 has a high thermal stability (T<sub>dsub> = 245.9 °C) and excellent detonation

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

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: Ti<sup>3+sup>-doped TiO<sub>2sub>     photocatalytic CO<sub>2sub> conversion     visible light irradiation    

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: window for 5000 galvanostatic cycles, exhibiting a stable electrode capacity of about 103 mAh/g at a C-rate

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

Simultaneous removal of NO and chlorobenzene on VO/TiO granular catalyst: Kinetic study and performance prediction

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1363-5

Abstract:

• A V<sub>2sub>O<sub>5sub>/TiO<sub>2sub> granular catalyst for

Keywords: NO<sub>xsub>     Chlorobenzene     Simultaneous removal     Kinetic study     Performance prediction     V<sub>2sub>O<sub>5sub>/TiO<sub>2sub>     Graphical abstract    

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 Co<sub>3sub>O<sub>4sub> on HZSM-5 support: designing applicable

Journal Article

Pentazolate Anion Cyclo-N<sub>5sub><sup>–sup>: Development of a New Energetic Material

Qiuhan Lin, Pengcheng Wang, Yuangang Xu, Ming Lu

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

Enhancing the aromatic selectivity of cyclohexane aromatization by CO<sub>2sub> coupling

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

Physical and chemical processes of wintertime secondary nitrate aerosol formation

Qi YING

Journal Article

Characterization and performance of V

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

Journal Article

An electrochemical process that uses an Fe

Chaojie Jiang, Lifen Liu, John C. Crittenden

Journal Article

Chemical deactivation of V

Xiaodong WU, Wenchao YU, Zhichun SI, Duan WENG

Journal Article

Metal-Free Hexagonal Perovskite High-Energetic Materials with NH<sub>3sub>OH<sup>+sup>/NH<sub>2sub>NH<sub>3sub><sup>+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

Facile synthesis and enhanced visible-light photocatalytic activity of Ti

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

Journal Article

High purity Mn

Xiaoqiang SHAN, Fenghua GUO, Wenqian XU, Xiaowei TENG

Journal Article

Simultaneous removal of NO and chlorobenzene on VO/TiO granular catalyst: Kinetic study and performance prediction

Journal Article