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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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Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 372-375 doi: 10.1007/s11705-010-0570-1

Abstract: The effect of potassium carbonate as additive on the composition and morphology of the product was investigatedAddition of potassium carbonate increased the yield of calcium carbide.The sample in the presence of potassium carbonate generated acetylene gas of 168.3 L/kg, which was 10%higher than that in the absence of potassium carbonate.This result confirmed the catalytic effect of potassium carbonate on the synthesis of calcium carbide

Keywords： calcium carbide     synthesis     catalysis    

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Influences of additives on the crystal habit of potassium chloride

Xiaofu GUO, Junsheng YUAN, Zhiyong JI, Min SU,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 1,   Pages 78-81 doi: 10.1007/s11705-009-0300-8

Abstract: By means of constant control speed cooling crystallization, the influences of four additives, including lead chloride, cadmium chloride, sodium salicylate, and quaternary ammonium salt, on the crystal habit of KCl were investigated. The results show that the crystal habit of KCl is cube without additives, the crystal habit of KCl is ellipsoid-like in the presence of Pb, the crystal habit of KCl is strip in the presence of Cd, and the crystal habit of KCl is cavate cube in the presence of sodium salicylate. X-ray diffractometry analysis reveals that these additives can change the crystal habit of KCl but not its crystal structure.

Keywords： cadmium chloride     salicylate     presence     crystallization     diffractometry analysis    

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Experimental study on high-efficiency polishing for potassium dihydrogen phosphate (KDP) crystal by using

Ziyuan LIU, Hang GAO, Dongming GUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 294-302 doi: 10.1007/s11465-019-0576-4

Abstract: surface contamination and solve the inefficiency of previous water-dissolution polishing techniques for potassium

Keywords： potassium dihydrogen phosphate (KDP) crystal     controllable deliquescence     two-phase air–water fluid     high-efficiency    

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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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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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A space power system of free piston Stirling generator based on potassium heat pipe

Mingqiang LIN, Jian MOU, Chunyun CHI, Guotong HONG, Panhe GE, Gu HU

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 1-10 doi: 10.1007/s11708-019-0655-6

Abstract: The power system of a free piston Stirling generator (FPSG) based on potassium heat pipes has been developedBesides, the power system integrated with four FPSGs and potassium heat pipes was performed and the single

Keywords： free piston Stirling generator (FPSG)     potassium heat pipe     power system     energy conversion    

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Effect of adding a smart potassium ion-responsive copolymer into polysulfone support membrane on the

Meibo He, Zhuang Liu, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 400-414 doi: 10.1007/s11705-018-1757-0

Abstract: Thin-film composite (TFC) nanofiltration (NF) membranes were fabricated via the interfacial polymerization of piperazine (PIP) and 1,3,5-benzenetricarbonyl trichloride on polysulfone (PSf) support membranes blended with K -responsive poly( -isopropylacryamide-co-acryloylamidobenzo-15-crown-5) (P(NIPAM-co-AAB C )). Membranes were characterized by attenuated total reflection Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, atomic force microscope, scanning electron microscope, contact angle, and filtration tests. The results showed that: (1) Under K -free conditions, the blended P(NIPAM-co-AAB C )/PSf supports had porous and hydrophilic surfaces, thereby producing NF membranes with smooth surfaces and low MgSO rejections; (2) With K in the PIP solution, the surface roughness and water permeability of the resultant NF membrane were increased due to the K -induced transition of low-content P(NIPAM-co-AAB C ) from hydrophilic to hydrophobic; (3) After a curing treatment at 95 °C, the improved NF membrane achieved an even higher pure water permeability of 10.97 L·m ·h ·bar under 200 psi. Overall, this study provides a novel method to improve the performance of NF membranes and helps understand the influence of supports on TFC membranes.

Keywords： nanofiltration     interfacial polymerization     support membrane     potassium ion-responsive     thin-film composite    

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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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Construction, characterization and application of a genome-wide promoter library in

Ting Yuan,Yakun Guo,Junkai Dong,Tianyi Li,Tong Zhou,Kaiwen Sun,Mei Zhang,Qingyu Wu,Zhen Xie,Yizhi Cai,Limin Cao,Junbiao Dai

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 1,   Pages 107-116 doi: 10.1007/s11705-017-1621-7

Abstract: Here we report the construction of a genome-wide promoter library, in which each native promoter in

Keywords： synthetic biology     yeast     promoter activity     metabolic engineering     xylose utilization    

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Effects of MgO promoter on properties of Ni/Al2O3 catalysts for partial oxidation of methane to syngas

QIU Yejun, CHEN Jixiang, ZHANG Jiyan

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 167-171 doi: 10.1007/s11705-007-0031-7

Abstract: The effects of MgO promoter on the physico-chemical properties and catalytic performance of Ni/AlO catalystsIt was found that the MgO promoter benefited from the uniformity of nickel species in the catalysts,Moreover, for the catalysts with a proper amount of MgO promoter, the nickel dispersiveness was enhancedHowever, the excessive MgO promoter exerted a negative effect on the catalytic performance.The suitable content of MgO promoter in Ni/AlO catalyst was ?7 wt-%.

Keywords： excessive     selectivity     decrease     dispersiveness     physico-chemical    

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Preparation and gaseous photocatalytic activity of smooth potassium dititanate film

QIAN Qinghua, HU Yuyan, WEN Gaofei, FENG Xin, LU Xiao-hua

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 308-314 doi: 10.1007/s11705-008-0047-7

Abstract: A new smooth potassium dititanate film was prepared by sol-gel method and characterized by thermogravimetry

Keywords： reflectance     UV-Visible     photocurrent     irradiation     scanning calorimetry    

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Kinetics of oxidation of dimethyl trisulfide by potassium permanganate in drinking water

Xiaoyan MA, Shifei HU, Hongyu WANG, Jun LI, Jing HUANG, Yun ZHANG, Weigang LU, Qingsong LI

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 171-176 doi: 10.1007/s11783-011-0319-1

Abstract: Reaction kinetics of dimethyl trisulfide oxidized by potassium permanganate in water had been studiedResults showed that dimethyl trisulfide can be removed by potassium permanganate efficiently; the ratio

Keywords： odor and taste     oxidation reaction     reaction kinetics     water treatment    

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Green process to recover magnesium chloride from residue solution of potassium chloride production plant

WANG Lin, HE Yunliang, WANG Yanfei, BAO Ying, WANG Jingkang

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 385-389 doi: 10.1007/s11705-008-0079-z

Abstract: The green process to recover magnesium chloride from the residue solution of a potassium chloride productionThe residue solution contains magnesium chloride above 25 wt-%, potassium chloride and sodium chlorideThe crystallized impurity carnallite obtained from the first step is recycled to the potassium chlorideplant to recover the potassium salt.

Keywords： industrial production     chemical industrial     produced magnesium     chloride production     impurity carnallite    

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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

Effect of potassium carbonate on catalytic synthesis of calcium carbide at moderate temperature

Dejun SHI, Ke QIAO, Zifeng YAN

Journal Article

Influences of additives on the crystal habit of potassium chloride

Xiaofu GUO, Junsheng YUAN, Zhiyong JI, Min SU,

Journal Article

Experimental study on high-efficiency polishing for potassium dihydrogen phosphate (KDP) crystal by using

Ziyuan LIU, Hang GAO, Dongming GUO

Journal Article

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

Lunxiu Qin

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

A space power system of free piston Stirling generator based on potassium heat pipe

Mingqiang LIN, Jian MOU, Chunyun CHI, Guotong HONG, Panhe GE, Gu HU

Journal Article

Effect of adding a smart potassium ion-responsive copolymer into polysulfone support membrane on the

Meibo He, Zhuang Liu, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Journal Article

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

Journal Article

Construction, characterization and application of a genome-wide promoter library in

Ting Yuan,Yakun Guo,Junkai Dong,Tianyi Li,Tong Zhou,Kaiwen Sun,Mei Zhang,Qingyu Wu,Zhen Xie,Yizhi Cai,Limin Cao,Junbiao Dai

Journal Article

Effects of MgO promoter on properties of Ni/Al2O3 catalysts for partial oxidation of methane to syngas

QIU Yejun, CHEN Jixiang, ZHANG Jiyan

Journal Article

Preparation and gaseous photocatalytic activity of smooth potassium dititanate film

QIAN Qinghua, HU Yuyan, WEN Gaofei, FENG Xin, LU Xiao-hua

Journal Article

Kinetics of oxidation of dimethyl trisulfide by potassium permanganate in drinking water

Xiaoyan MA, Shifei HU, Hongyu WANG, Jun LI, Jing HUANG, Yun ZHANG, Weigang LU, Qingsong LI

Journal Article

Green process to recover magnesium chloride from residue solution of potassium chloride production plant

WANG Lin, HE Yunliang, WANG Yanfei, BAO Ying, WANG Jingkang

Journal Article