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Characterization and comparison of organic functional groups effects on electrolyte performance for vanadium

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1221-1230 doi: 10.1007/s11705-023-2298-8

Abstract: electrolyte energy density and stability limitations, as well as to investigate the effects of various organic

Keywords： vanadium redox flow battery     functional groups     organic additives     energy density     stability    

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Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1503-1515 doi: 10.1007/s11705-022-2294-4

Abstract: In this work, the influence of the initial chemical potential gradient, stirring speed, and polymer type on sulfamethoxazole (SMX) crystal growth kinetics was systematically investigated through density functional theory (DFT) calculations, experimental measurements and the two-step chemical potential gradient model. To investigate the influence of different conditions on the thermodynamic driving force of SMX crystal growth, SMX solubilities in different polymer solutions were studied. Four model polymers effectively improved SMX solubility. It was further found that polyvinylpyrrolidone (PVP) and hydroxypropyl methyl cellulose (HPMC) played a crucial role in inhibiting SMX crystal growth. However, polyethylene glycol (PEG) promoted SMX crystal growth. The effect of the polymer on the crystal growth mechanisms of SMX was further analyzed by the two-step chemical potential gradient model. In the system containing PEG 6000, crystal growth is dominated by the surface reaction. However, in the system containing PEG 20000, crystal growth is dominated by both the surface reaction and diffusion. In addition, DFT calculations results showed that HPMC and PVP could form strong and stable binding energies with SMX, indicating that PVP and HPMC had the potential ability to inhibit SMX crystal growth.

Keywords： insoluble drugs     polymer     inhibition crystallization     crystal growth kinetics     DFT calculations    

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Design of bio-oil additives via molecular signature descriptors using a multi-stage computer-aided molecular

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 168-182 doi: 10.1007/s11705-021-2056-8

Abstract: Direct application of bio-oil from fast pyrolysis as a fuel has remained a challenge due to its undesirable attributes such as low heating value, high viscosity, high corrosiveness and storage instability. Solvent addition is a simple method for circumventing these disadvantages to allow further processing and storage. In this work, computer-aided molecular design tools were developed to design optimal solvents to upgrade bio-oil whilst having low environmental impact. Firstly, target solvent requirements were translated into measurable physical properties. As different property prediction models consist different levels of structural information, molecular signature descriptor was used as a common platform to formulate the design problem. Because of the differences in the required structural information of different property prediction models, signatures of different heights were needed in formulating the design problem. Due to the combinatorial nature of higher-order signatures, the complexity of a computer-aided molecular design problem increases with the height of signatures. Thus, a multi-stage framework was developed by developing consistency rules that restrict the number of higher-order signatures. Finally, phase stability analysis was conducted to evaluate the stability of the solvent-oil blend. As a result, optimal solvents that improve the solvent-oil blend properties while displaying low environmental impact were identified.

Keywords： computer-aided molecular design     bio-oil additives     molecular signature descriptor    

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EFFECT OF EXOGENOUS ADDITIVES ON HEAVY METAL PASSIVATION AND NITROGEN RETENTION IN PIG MANURE COMPOSTING

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023487

Abstract:

● Research on heavy metal passivation and nitrogen emissions is necessary for the pig industry.

Keywords： additives     composting     heavy metals passivation     nitrogen retention     pig manure    

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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, includingThe results show that the crystal habit of KCl is cube without additives, the crystal habit of KCl isX-ray diffractometry analysis reveals that these additives can change the crystal habit of KCl but not

Keywords： cadmium chloride     salicylate     presence     crystallization     diffractometry analysis    

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Enhancing thermostability of -mannanase by protective additives

LIU Zhaohui, QI Wei, WU Weina, LIU Yue, HE Zhimin

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 4,   Pages 439-442 doi: 10.1007/s11705-008-0062-8

Abstract: reaction temperatures of -mannanase and the thermodynamics and the deactivation kinetics with or without additivesMeanwhile, the protective mechanism of the additives against deactivation of enzyme was also discussed

Keywords： protective additive     g/L     orthogonal experimental     combination additive     corresponding    

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Chemical additives affect sulfate reducing bacteria biofilm properties adsorbed on stainless steel 316L

Yu Qi,Jin Li,Rui Liang,Sitong Ji,Jianxiang Li,Meng Liu

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0917-7

Abstract: (SRB) on stainless steel 316L (SS316L) surface in circulating cooling water system with and without additivesshows that the corrosion potential of SS316L was enhanced from −0.495 V to −0.390 V by the chemical additivesThis study would provide some recommendations for the selection of chemical additives in the thermal

Keywords： Sulfate reducing bacteria (SRB)     Chemical additives     Biofilm     Extracellular polymeric substance (EPS)     Microbe    

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Effect of mineral additives and permeability reducing admixtures having different action mechanisms on

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1277-1291 doi: 10.1007/s11709-021-1752-2

Abstract: different action mechanisms on hardened state properties of cementitious systems containing mineral additives

Keywords： cementitious system     mineral additive     permeability reducing admixture     mechanical properties     durability performance    

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Preparation and properties of nano SiO2 core-shell structured additives and their nanocomposite with

KE Yangchuan, SUN Mingzhuo, SONG Yanxin, YANG GuangFu

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 76-80 doi: 10.1007/s11705-007-0016-6

Abstract: To improve the performance of traditional nucleation additives and their compatibility with other additives

Keywords： deformation coefficient     distortion temperature     excellent     NPP0-PP     traditional nucleation    

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Effect of PEG additives on properties and morphologies of polyetherimide membranes prepared by phase

Jian CHEN, Jiding LI, Xia ZHAN, Xiaolong HAN, Cuixian CHEN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 300-306 doi: 10.1007/s11705-009-0280-8

Abstract: This study investigated the effect of poly(ethylene glycol) (PEG) additive as a pore-former on the structure formation of membranes and their permeation properties connected with the changes in thermodynamic and kinetic properties in the phase inversion process. The membranes were prepared by using polyetherimide/-methyl-2-pyrrolidone/PEG (PEI/NMP/PEG) casting solution and water coagulant. The resulting membranes, prepared by changing the ratio of PEG to PEI, were characterized by scanning electron microscope (SEM) observations, measurements of water flux and -globin rejection. The thermodynamic and kinetic properties of the membrane-forming system were studied through viscosity. The pore radius distribution curves were especially obtained by differential scanning calorimetry (DSC). Furthermore, the membranes were characterized for pure water flux and rejection of solute and by SEM observation. The filtration results agreed well with the SEM observations. As expected, PEG with a fixed molecular weight (PEG 600) acted as a pore forming agent, and membrane porosity increased as the PEG content of the casting solution increased.

Keywords： permeation     ethylene     filtration     PEI/NMP/PEG     membrane    

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Oilfield Chemical Additives in Drilling: Current Applications & Development Trend

Liu Rushan,Su Changming

Strategic Study of CAE 2002, Volume 4, Issue 5,   Pages 88-92

Abstract:

This paper summarizes the current research and applications of oil field chemical additives in drillingFor the development trend of oilfield chemical additives, it is, guided by new oilfield chemistry theory

Keywords： oil field additives     drilling & completion fluid     reservoir protectiori     multifunctional polymers    

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Hierarchical porous metal-organic frameworks/polymer microparticles for enhanced catalytic degradationof organic contaminants

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 939-949 doi: 10.1007/s11705-022-2152-4

Abstract: microparticles containing hierarchical porous structures integrated with highly accessible catalytic metal organicframeworks for efficient degradation of organic contaminants.possess interconnected hierarchical porous structures decorated with highly accessible Fe-based metal-organicframework nanorods for enhanced degradation of organic contaminants via a heterogeneous Fenton-likesimple and general strategy to flexibly combine hierarchical porous structures and catalytic metal-organic

Keywords： metal-organic framework     polymer microparticle     nanocatalyst     decontamination     organic contaminant    

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Enhancing the adsorption function of biochar by mechanochemical graphitization for organic pollutant

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1418-2

Abstract:

• Mechanochemical treatment reduced the calcination temperature for biochar synthesis.

Keywords： Biochar     Mechanochemical treatment     Graphitization     Calcination temperature     Organic pollutant    

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Promoting Si-graphite composite anodes with SWCNT additives for half and NCM811 full lithium ion batteries

Jingning SHAN, Xiaofang YANG, Chao YAN, Yiguang JU, Lin CHEN, Fang ZHAO

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 626-635 doi: 10.1007/s11708-019-0650-y

Abstract: Single wall carbon nanotube (SWCNT) additives were formulated into µm-Si-graphite composite electrodes) was used to illustrate the electrode morphology, compositions and promoting function of the SWCNT additives

Keywords： lithium-ion battery     Si anode     Si-graphite composite     single wall carbon nanotube (SWCNT)     NCM811    

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Dynamic response surface methodology using Lasso regression for organic pharmaceutical synthesis

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 221-236 doi: 10.1007/s11705-021-2061-y

Abstract: DRSM with Lasso regression can provide faster and more accurate data-driven models for a variety of organic

Keywords： data-driven modeling     pharmaceutical organic synthesis     Lasso regression     dynamic response surface methodology    

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Title Author Date Type Operation

Characterization and comparison of organic functional groups effects on electrolyte performance for vanadium

Journal Article

Theoretical insights into influence of additives on sulfamethoxazole crystal growth kinetics and mechanisms

Journal Article

Design of bio-oil additives via molecular signature descriptors using a multi-stage computer-aided molecular

Journal Article

EFFECT OF EXOGENOUS ADDITIVES ON HEAVY METAL PASSIVATION AND NITROGEN RETENTION IN PIG MANURE COMPOSTING

Journal Article

Influences of additives on the crystal habit of potassium chloride

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

Journal Article

Enhancing thermostability of -mannanase by protective additives

LIU Zhaohui, QI Wei, WU Weina, LIU Yue, HE Zhimin

Journal Article

Chemical additives affect sulfate reducing bacteria biofilm properties adsorbed on stainless steel 316L

Yu Qi,Jin Li,Rui Liang,Sitong Ji,Jianxiang Li,Meng Liu

Journal Article

Effect of mineral additives and permeability reducing admixtures having different action mechanisms on

Journal Article

Preparation and properties of nano SiO2 core-shell structured additives and their nanocomposite with

KE Yangchuan, SUN Mingzhuo, SONG Yanxin, YANG GuangFu

Journal Article

Effect of PEG additives on properties and morphologies of polyetherimide membranes prepared by phase

Jian CHEN, Jiding LI, Xia ZHAN, Xiaolong HAN, Cuixian CHEN,

Journal Article

Oilfield Chemical Additives in Drilling: Current Applications & Development Trend

Liu Rushan,Su Changming

Journal Article

Hierarchical porous metal-organic frameworks/polymer microparticles for enhanced catalytic degradationof organic contaminants

Journal Article

Enhancing the adsorption function of biochar by mechanochemical graphitization for organic pollutant

Journal Article

Promoting Si-graphite composite anodes with SWCNT additives for half and NCM811 full lithium ion batteries

Jingning SHAN, Xiaofang YANG, Chao YAN, Yiguang JU, Lin CHEN, Fang ZHAO

Journal Article

Dynamic response surface methodology using Lasso regression for organic pharmaceutical synthesis

Journal Article