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Keywords

CO₂ capture 19

PM_2.5 16

TiO₂ 14

photocatalysis 10

CO₂ 9

adsorption 9

CO₂ emissions 7

Al₂O₃ 6

Photocatalysis 6

H₂S 4

MnO₂ 4

N₂O 4

biosorption 4

catalysis 4

methane 4

2 3

Cr(VI) 3

MoS₂ 3

NO_x 3

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Effect of K and Ca on catalytic activity of Mn-CeO

Boxiong SHEN, Lidan DENG, Jianhong CHEN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 4, Pages 512-517 doi: 10.1007/s11783-013-0519-y

Abstract: Mn-CeO /Ti-pillared clay (PILC) is an attractive catalyst for selective catalytic reduction of NO atThe poisoning of K and Ca on the catalyst of Mn-CeO /Ti-PILC is an important problem because K and Ca/Ti-PILC.(Ca)Mn-CeO /Ti-PILC and (K)Mn-CeO /Ti-PILC are denoted for the dopes of the catalyst of Mn-CeO /Ti-PILCThe activities of Mn-CeO /Ti-PILC, (Ca)Mn-CeO /Ti-PILC and (K)Mn-CeO /Ti-PILC for NH -selective catalytic

Keywords： Mn-CeO<italic>xitalic>sub>/Ti-pillared clay (PILC) low-temperature selective catalytic reduction

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CO2sub> methanation and co-methanation of CO and CO2sub> over Mn-promoted Ni/Al2sub>O3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 2, Pages 273-280 doi: 10.1007/s11705-016-1563-5

Abstract: A series of Mn-promoted 15 wt-% Ni/Al O catalysts were prepared by an incipient wetness impregnationThe effect of the Mn content on the activity of the Ni/Al O catalysts for CO methanation and the co-methanationThe presence of Mn increased the number of CO adsorption sites and inhibited Ni particle agglomerationThe Mn content was varied from 0.86% to 2.54% and the best CO conversion was achieved with the 1.71Mn-NiThe co-methanation tests on the 1.71Mn-Ni/Al O catalyst indicated that adding Mn markedly enhanced the

Keywords： Mn promotion nickel catalysts CO2sub> methanation co-methanation of CO and CO2sub>

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Excellent performance of Cu-Mn/Ti-sepiolite catalysts for low-temperature CO oxidation

Yong Song,Lisha Liu,Zhidan Fu,Qing Ye,Shuiyuan Cheng,Tianfang Kang,Hongxing Dai

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0908-8

Abstract: Sepiolite is clay mineral with a 2:1 layered structure.Ti-pillars have an impact on physicochemical property of the sample. 30Mn5Cu/Ti-Sep shows excellent catalyticThe Ti-modified sepiolite (Ti-Sep)-supported Mn-Cu mixed oxide ( Mn5Cu/Ti-Sep) catalysts were synthesizedIt was found that the catalytic activities of Mn5Cu/Ti-Sep were higher than those of 5Cu/Ti-Sep andAmong the Mn5Cu/Ti-Sep samples, the 30Mn5Cu/Ti-Sep catalyst showed the best activity (which also outperformed

Keywords： Ti-modified sepiolite Supported Mn-Cu mixed oxide Low-temperature reducibility Strong metal-support interaction

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Denitrification performance and sulfur resistance mechanism of Sm–Mn catalyst for low temperature NH-SCR

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5, Pages 617-633 doi: 10.1007/s11705-022-2258-8

Abstract: MnOxsub> and Sm–Mn catalysts were prepared with the coprecipitation method, and they showedsub> by NH3sub> between 50 and 300 °C in the presence of excess oxygen. 0.10Sm–Mn catalyst indicatedFor 0.10Sm–Mn catalyst, manganese sulfate and sulfur ammonium cannot be generated broadly under the influenceof SO2sub> and the amount of surface adsorbed oxygen.sulfur resistance of the 0.10Sm–Mn catalyst.

Keywords： MnOxsub> Sm–Mn catalyst NH3sub>-SCR sulfur resistance

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Engineering a Coordinatively Unsaturated Au–O–Ti³⁺ Structure Toward Unprecedented H2sub> Efficiency for Low-Temperature Propene Epoxidation with H2sub> and O2sub> Article

Zhaoning Song, Hao Yan, Juncong Yuan, Hongfei Ma, Jianlin Cao, Yongxiang Wang, Qiang Wang, Chong Peng, Feng Deng, Xiang Feng, De Chen, Chaohe Yang, Yongkang Hu

Engineering 2023, Volume 25, Issue 6, Pages 144-156 doi: 10.1016/j.eng.2023.01.008

Abstract:

Since 1998, the Au–O–Ti⁴⁺ sites of Au/Ti-based catalysts have been widely acceptedas the active sites for propene epoxidation with H2sub> and O2sub> at a relatively highIt was found that the Ti–OOH generation rate is higher on Au–O–Ti³⁺ thanon conventional Au–O–Ti⁴⁺ sites.>2sub>O2sub> and the Ti–OOH intermediate, even at a low temperature.

Keywords： Propene epoxidation H2sub> efficiency Au/Ti bifunctional catalysts Coordinatively unsaturatedTi Density-functional theory

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Li4sub>SiO4sub>-coated LiNi0.5sub>Mn1.5sub>O4sub> as the high performance

Shifeng YANG, Wenfeng REN, Jian CHEN

Frontiers in Energy 2017, Volume 11, Issue 3, Pages 374-382 doi: 10.1007/s11708-017-0494-2

Abstract: The preparation of Li SiO -coated LiNi Mn O materials by sintering the SiO -coated nickel-manganeseWhen used as the cathode materials for lithium-ion batteries, the Li SiO -coated LiNi Mn O samples deliver

Keywords： lithium-ion batteries cathode material LiNi0.5sub>Mn1.5sub>O4sub> lithium-ion conductor

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Assessment of toxicity of two nitroaromatic compounds in the freshwater fish

Hongyan SHEN, Jixi GAO, Jinsheng WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4, Pages 518-523 doi: 10.1007/s11783-012-0427-6

Abstract: This study was conducted to evaluate the toxicological response of -nitrotoluene and -nitroaniline to the key fish species, . A freshwater fish bioassay based on the 96 h was used to estimate the single and joint toxicity of the two chemicals. The toxicity of -nitrotoluene was greater than that of -nitroaniline based on 96 h values of 40.74 mg·L and 48.99 mg·L , respectively. Both compounds had moderate toxicity toward , and this toxicity increased with the exposure duration and concentration. Binary mixtures of the compounds were more toxic than the individual compounds at 96 h, and they acted upon partial addition. When the exposure time was longer, the toxicity increased for mixtures of compounds with the same concentration or toxicity. The results of this study suggest that exposure to a combination of these chemicals would result in a higher environmental risk in aquatic systems than exposure to either compound alone. Further research is needed to investigate the combined effects and sublethal toxicity of -nitrotoluene and -nitroaniline, since they are both still used in China.

Keywords： joint toxicity <italic>Cyprinus carpioitalic> <italic>LCitalic>50sub> <italic>pitalic>-nitrotoluene <italic>pitalic>-nitroaniline toxic unit

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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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NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1696-y

Abstract:

● Microwave-assisted catalytic NH3sub>-SCR reaction over spinel

Keywords： Microwave field Spinel oxides NOxsub> Selective catalytic reduction

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Neutron Diffraction Investigation of the DyFe11sub>Ti Magnetic Structure and Its Spin Reorientations Article

Olivier Isnard, Eder J. Kinast

Engineering 2020, Volume 6, Issue 2, Pages 153-157 doi: 10.1016/j.eng.2019.11.009

Abstract:

In this article, we report on the magnetic structure of DyFe11sub>Ti and its thermal evolutionA large Dy magnetic moment of 9.7 μBsub> was obtained at low temperatures, and the magnitudedecreased rapidly to 7.5 μBsub> at 200 K.A ThMn12sub>-type crystal structure was preserved in the studied temperature range, despite theA sharp tilt was observed at the first-order spin reorientation, TSR1sub>; the angle between the

Keywords： Neutron diffraction Magnetic phase diagram Crystal structure

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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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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: In this paper, the synthesis of high purity layered Mn O nanoparticles through solid state thermal treatmentof Mn O spinel nanoparticles, resulting in a chemical formula of [Mn ][Mn O ], evidenced by Rietveldelectro-kinetic analyses obtained from cyclic voltammetry measurements in half-cells have demonstrated that MnSymmetric full-cells fabricated using Mn O electrodes can be operated within a stable 3.0 V potential

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

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Synthesis of

Lili ZHANG, Ming LIU, Shijun MA, Yaodong HUANG, Yongmei WANG

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4, Pages 408-414 doi: 10.1007/s11705-013-1343-4

Abstract: Two new -symmetric primary-secondary diamines were synthesized via the reaction of ( , )-1,2-diphenyl ethylene diamine with 3,5-ditert-butyl salicylaldehyde and salicylaldehyde, respectively, followed by reduction with NaBH . The combination of the ligand from 3,5-ditert-butyl salicylaldehyde with CuBr could effciently catalyze the Henry reaction to afford -nitroalkanols in moderate to good yields (up to 87%) and high enantioselectivities (up to 88% ). A possible mechanism of the reaction was proposed.

Keywords： enantioselective Henry reaction <italic>Citalic>1sub>-symmetric diamines asymmetric reaction

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Effects of different sediment fractions on sorption of galaxolide

Lixia JIN, Mengchang HE, Jinghuan ZHANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1, Pages 59-65 doi: 10.1007/s11783-010-0259-1

Abstract: Sorption isotherms of galaxolide (HHCB) of different fractions from two sediments with different mineral and organic carbon contents were determined to compare HHCB sorption behavior and contribution to the total sorption. The HHCB sorption isotherms that used the batch equilibration method were studied on different sediments of different fractions. The sorption isotherms of 600°C heating fractions were detailed using the linear model, while the other fractions were nonlinear and fitted well with the Freundlich model. The dissolved organic carbon (DOC) removed, NaOH extracted, and 375°C heating fractions showed more nonlinear sorption than the original sediments, which suggested more heterogeneous sorption sites in these fractions. Compared to the original sediments, the 375°C heating fractions had higher carbon-normalized distribution coefficient ( ) values, indicating a higher sorption affinity for HHCB. Among the different sediment fractions, the contribution of the 600°C heating fractions to the overall sorption were the lowest (<20%), while the 375°C heating fractions were the highest (up to 85%).

Keywords： galaxolide (HHCB) sorption organic carbon sediment carbon-normalized distribution coefficient (<italic>Kitalic>ocsub>)

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The effect of preparation conditions of Pt/Al

Lei YUAN, Xiang ZHENG, Kaijiao DUAN, Hao HU, Jinggang WANG, Seong Ihl WOO, Zhiming LIU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3, Pages 457-463 doi: 10.1007/s11783-013-0512-5

Abstract: Selective catalytic reduction of NO by H in the presence of oxygen has been investigated over Pt/Al O catalysts pre-treated under different conditions. Catalyst preparation conditions exert significant influence on the catalytic performance, and the catalyst pre-treated by H or H then followed by O is much more active than that pre-treated by air. The higher surface area and the presence of metallic Pt over Pt/Al O pre-treated by H or pretreated by H then followed by O can contribute to the formation of NO , which then promotes the reaction to proceed at low temperatures.

Keywords： NO<italic>xitalic>sub> reduction Pt/Al2sub>O3sub> preparation condition H2sub>-SCR

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Title Author Date Type Operation

Effect of K and Ca on catalytic activity of Mn-CeO

Boxiong SHEN, Lidan DENG, Jianhong CHEN

Journal Article

CO2sub> methanation and co-methanation of CO and CO2sub> over Mn-promoted Ni/Al2sub>O3sub> catalysts

Kechao Zhao,Zhenhua Li,Li Bian

Journal Article

Excellent performance of Cu-Mn/Ti-sepiolite catalysts for low-temperature CO oxidation

Yong Song,Lisha Liu,Zhidan Fu,Qing Ye,Shuiyuan Cheng,Tianfang Kang,Hongxing Dai

Journal Article

Denitrification performance and sulfur resistance mechanism of Sm–Mn catalyst for low temperature NH-SCR

Journal Article

Engineering a Coordinatively Unsaturated Au–O–Ti³⁺ Structure Toward Unprecedented H2sub> Efficiency for Low-Temperature Propene Epoxidation with H2sub> and O2sub>

Zhaoning Song, Hao Yan, Juncong Yuan, Hongfei Ma, Jianlin Cao, Yongxiang Wang, Qiang Wang, Chong Peng, Feng Deng, Xiang Feng, De Chen, Chaohe Yang, Yongkang Hu

Journal Article

Li4sub>SiO4sub>-coated LiNi0.5sub>Mn1.5sub>O4sub> as the high performance

Shifeng YANG, Wenfeng REN, Jian CHEN

Journal Article

Assessment of toxicity of two nitroaromatic compounds in the freshwater fish

Hongyan SHEN, Jixi GAO, Jinsheng WANG

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

NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Journal Article