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Effects of Potassium and Manganese Promoters on Nitrogen-Doped Carbon Nanotube-Supported Iron Catalysts Article

Praewpilin Kangvansura, Ly May Chew, Chanapa Kongmark, Phatchada Santawaja, Holger Ruland, Wei Xia, Hans Schulz, Attera Worayingyong, Martin Muhler

Engineering 2017, Volume 3, Issue 3,   Pages 385-392 doi: 10.1016/J.ENG.2017.03.013

Abstract: The Fe/NCNT catalyst promoted with both potassium (K) and manganese (Mn) showed high performance in COThe structural effect of the Mn promoter was demonstrated by X-ray diffraction (XRD), temperature-programmedThe Mn promoter stabilized wüstite (FeO) as an intermediate and lowered the TPR onset temperatureammonia (NH3) decomposition was used as an additional probe reaction for characterizing the promoter

Keywords： CO2 hydrogenation     Iron catalyst     Nitrogen-doped carbon nanotubes     Manganese promoter     Potassiumpromoter    

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Effect of a promoter on the methanation activity of a Mo-based sulfur-resistant catalyst

Can LIN, Haiyang WANG, Zhenhua LI, Baowei WANG, Xinbin MA, Shaodong QIN, Qi SUN

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 88-94 doi: 10.1007/s11705-013-1301-1

Abstract: The effect of adding Co, Ni or La on the methanation activity of a Mo-based sulfur-resistant catalyst was investigated. As promoters, Co, Ni and La all improved the methanation activity of a 15% MoO /Al O catalyst but to different extents. Similar improvements were also found when Co, Ni or La was added to a 15% MoO /25%-CeO -Al O catalyst. The promotion effects of Co and Ni were better than that of La. However, the catalytic methanation activity deteriorated the most with time for the Ni-promoted catalyst. The used catalysts were analyzed by nitrogen adsorption measurement, X-ray diffraction and X-ray photoelectron spectroscopy.

Keywords： sulfur-resistant     methanation     promoter    

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Effects of humic acid and surfactants on the aggregation kinetics of manganese dioxide colloids

Xiaoliu HUANGFU,Yaan WANG,Yongze LIU,Xixin LU,Xiang ZHANG,Haijun CHENG,Jin JIANG,Jun MA

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 105-111 doi: 10.1007/s11783-014-0726-1

Abstract: The aggregation of common manganese dioxide (MnO ) colloids has great impact on their surface reactivity

Keywords： humic acid     surfactant     aggregation kinetics     drinking water     manganese dioxide colloids    

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Tripotassium citrate monohydrate derived carbon nanosheets as a competent assistant to manganese dioxide

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 420-432 doi: 10.1007/s11705-021-2065-7

Abstract: Subsequently, a well-designed manganese dioxide/carbon nanosheets composite was synthesized through hydrothermalThe carbon nanosheets served as the substrate for growing the manganese dioxide, regulating its distributionMany manganese dioxide nanosheets grew vertically on the numerous functional groups generated on theFinally, an asymmetric supercapacitor with active carbon as the cathode and manganese dioxide/carbonThis study may provide valuable insights for applying carbon materials and manganese dioxide in the energy

Keywords： carbon nanosheets     manganese dioxide     asymmetric supercapacitors     energy density     power density    

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Catalytic activity of manganese oxide supported on alumina in the synthesis of quinoxalines

Rekha M., H. Kathyayini, N. Nagaraju

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 415-421 doi: 10.1007/s11705-013-1360-3

Abstract: Two catalysts, alumina and manganese oxide supported on alumina, have been prepared by calcination and

Keywords： alumina     manganese oxide deposited on alumina     quinoxaline synthesis    

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Coextraction of vanadium and manganese from high-manganese containing vanadium wastewater by a solvent

Zishuai Liu, Yimin Zhang, Zilin Dai, Jing Huang, Cong Liu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 902-912 doi: 10.1007/s11705-019-1887-z

Abstract: High-manganese containing vanadium wastewater (HMVW) is commonly produced during the vanadium extractionFor the precipitation process, 91.05% of manganese was recovered as MnCO which meets the III grade standard

Keywords： high-manganese containing vanadium wastewater     solvent extraction     carbonate precipitation     vanadium titano-magnetite    

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Osteopontin is a promoter for hepatocellular carcinoma metastasis: a summary of 10 years of studies

Lunxiu Qin

Frontiers of Medicine 2014, Volume 8, Issue 1,   Pages 24-32 doi: 10.1007/s11684-014-0312-8

Abstract: found that OPN+ HCC cells have much more amplifications at chromosomal regions, and promoter

Keywords： osteopontin (OPN)     hepatocellular carcinoma     metastasis     prognosis     therapeutic target     biomarker     genetic polymorphism    

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The role of manganese oxides in the activation of peroxymonosulfate (PMS)

Jianzhi Huang, Huichun Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1158-8

Abstract: Manganese oxides (MnOx) have been demonstrated to be effective materials to activate Oxone (i.e., PMS

Keywords： Peroxymonosulfate     Manganese oxides     Catalyst     Oxidant    

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Cloning of human XAF1 gene promoter and assay of its transcription activity in a variety of cell lines

Qiong CHEN, Qing YU, Yuhu SONG, Peiyuan Li, Ying CHANG, Zhijun WANG, Lifeng LIU, Wei WU, Jusheng LIN

Frontiers of Medicine 2009, Volume 3, Issue 2,   Pages 148-152 doi: 10.1007/s11684-009-0032-7

Abstract: regulation of tumor suppressor XAF1 gene expression in digestive system cancers, we studied XAF1 gene promotercell line L02 (L02 cells) and human embryonic kidney 293 cells [HEK293 cells]) as controls. 1395-bp-promoterThe promoter transcription activity was determined by dual-luciferase report assay, and enhanced greenThe dual-luciferase reporter assay showed that the promoter transcription activity in digestive systemtumor cell lines transfected with pGL3-XAF1p promoter was apparently lower than that of both HEK293

Keywords： gene     X-linked inhibitor of apoptosis protein associated factor-1 (XAF1)     promoter     transcription regulation    

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Multivalent manganese oxides with high electrocatalytic activity for oxygen reduction reaction

Xiangfeng Peng, Zhenhai Wang, Zhao Wang, Yunxiang Pan

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 790-797 doi: 10.1007/s11705-018-1706-y

Abstract: The enhanced activity could be due to the coexistence of manganese ions with different valences, the

Keywords： oxygen reduction reaction     manganese oxides     mixed valences of manganese     oxygen adsorption     dielectric barrier    

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Chemical composition and formation mechanisms in the cathode-electrolyte interface layer of lithium manganese

Sahithya REDDIVARI, Christian LASTOSKIE, Ruofei WU, Junliang ZHANG

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 365-373 doi: 10.1007/s11708-017-0500-8

Abstract: Lithium manganese oxide (LiMn O ) is a principal cathode material for high power and high energy densityExperimental observations indicate that the manganese content of the electrolyte increases as an electrochemicalcell containing LiMn O ages, suggesting that active material loss by dissolution of divalent manganeseTo improve the retention of manganese in the active material, it is key to understand the reactions thatinvestigate the reactions occurring at the LiMn O cathode surface and the mechanisms that lead to manganese

Keywords： lithium manganese oxide batteries     reactive force field (ReaxFF)     cathode-electrolyte interface layer     molecular    

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Occurance and control of manganese in a large scale water treatment plant

Youjun CHEN,Feng XIAO,Yongkang LIU,Dongsheng WANG,Ming YANG,Hua BAI,Jiong ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 66-72 doi: 10.1007/s11783-014-0637-1

Abstract: The continuous variations of dissolved oxygen (DO), manganese (Mn), pH, and their effect on manganeseManganese concentration increased from 0.1 to 0.4 mg·L under the condition that DO concentration decreasedThe different water treatment processes exhibited different efficiency on manganese removal.the suspended sludge, low elevation velocity in settling tank and slow filter rate, will benefit the manganeseDuring a high release of manganese in raw water, traditional coagulation-sedimentation and filtration

Keywords： manganese release     dissolved oxygen     settling filtration     pre-oxidation    

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Visible light induces bacteria to produce superoxide for manganese oxidation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 2, doi: 10.1007/s11783-023-1619-y

Abstract:

● Term of manganese-oxidizing microorganisms should be reconsidered

Keywords： Mn(II) oxidation     Manganese-oxidizing bacteria     Reactive oxygen species     Mn(III/IV) oxides    

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Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1255-8

Abstract: • Mechanisms of redox reactions of Fe- and Mn-oxides were discussed. • Oxidative reactions of Mn- and Fe-oxides in complex systems were reviewed. • Reductive reaction of Fe(II)/iron oxides in complex systems was examined. • Future research on examining the redox reactivity in complex systems was suggested. Conspectus Redox reactions of Fe- and Mn-oxides play important roles in the fate and transformation of many contaminants in natural environments. Due to experimental and analytical challenges associated with complex environments, there has been a limited understanding of the reaction kinetics and mechanisms in actual environmental systems, and most of the studies so far have only focused on simple model systems. To bridge the gap between simple model systems and complex environmental systems, it is necessary to increase the complexity of model systems and examine both the involved interaction mechanisms and how the interactions affected contaminant transformation. In this Account, we primarily focused on (1) the oxidative reactivity of Mn- and Fe-oxides and (2) the reductive reactivity of Fe(II)/iron oxides in complex model systems toward contaminant degradation. The effects of common metal ions such as Mn2+ , Ca2+, Ni2+, Cr3+ and Cu2+, ligands such as small anionic ligands and natural organic matter (NOM), and second metal oxides such as Al, Si and Ti oxides on the redox reactivity of the systems are briefly summarized.

Keywords： Iron oxides     manganese oxides     reduction     oxidation     complex systems     reaction kinetics and mechanisms    

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Distinct gene expression pattern of mutations coordinated by target repression and promoter hypermethylation

Frontiers of Medicine 2022, Volume 16, Issue 4,   Pages 627-636 doi: 10.1007/s11684-020-0815-4

Abstract: This expression pattern was coordinated by target repression and promoter hypermethylation.Through the integration of DNA methylation array data, we illustrated that hypermethylation on the promoter

Keywords： RUNX1     gene mutation     acute myeloid leukemia     transcriptional repression     DNA methylation    

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Title Author Date Type Operation

Effects of Potassium and Manganese Promoters on Nitrogen-Doped Carbon Nanotube-Supported Iron Catalysts

Praewpilin Kangvansura, Ly May Chew, Chanapa Kongmark, Phatchada Santawaja, Holger Ruland, Wei Xia, Hans Schulz, Attera Worayingyong, Martin Muhler

Journal Article

Effect of a promoter on the methanation activity of a Mo-based sulfur-resistant catalyst

Can LIN, Haiyang WANG, Zhenhua LI, Baowei WANG, Xinbin MA, Shaodong QIN, Qi SUN

Journal Article

Effects of humic acid and surfactants on the aggregation kinetics of manganese dioxide colloids

Xiaoliu HUANGFU,Yaan WANG,Yongze LIU,Xixin LU,Xiang ZHANG,Haijun CHENG,Jin JIANG,Jun MA

Journal Article

Tripotassium citrate monohydrate derived carbon nanosheets as a competent assistant to manganese dioxide

Journal Article

Catalytic activity of manganese oxide supported on alumina in the synthesis of quinoxalines

Rekha M., H. Kathyayini, N. Nagaraju

Journal Article

Coextraction of vanadium and manganese from high-manganese containing vanadium wastewater by a solvent

Zishuai Liu, Yimin Zhang, Zilin Dai, Jing Huang, Cong Liu

Journal Article

Osteopontin is a promoter for hepatocellular carcinoma metastasis: a summary of 10 years of studies

Lunxiu Qin

Journal Article

The role of manganese oxides in the activation of peroxymonosulfate (PMS)

Jianzhi Huang, Huichun Zhang

Journal Article

Cloning of human XAF1 gene promoter and assay of its transcription activity in a variety of cell lines

Qiong CHEN, Qing YU, Yuhu SONG, Peiyuan Li, Ying CHANG, Zhijun WANG, Lifeng LIU, Wei WU, Jusheng LIN

Journal Article

Multivalent manganese oxides with high electrocatalytic activity for oxygen reduction reaction

Xiangfeng Peng, Zhenhai Wang, Zhao Wang, Yunxiang Pan

Journal Article

Chemical composition and formation mechanisms in the cathode-electrolyte interface layer of lithium manganese

Sahithya REDDIVARI, Christian LASTOSKIE, Ruofei WU, Junliang ZHANG

Journal Article

Occurance and control of manganese in a large scale water treatment plant

Youjun CHEN,Feng XIAO,Yongkang LIU,Dongsheng WANG,Ming YANG,Hua BAI,Jiong ZHANG

Journal Article

Visible light induces bacteria to produce superoxide for manganese oxidation

Journal Article

Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Journal Article

Distinct gene expression pattern of mutations coordinated by target repression and promoter hypermethylation

Journal Article