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co.tinuous Process Optimization and co.putational Fluid Dynamics Simulation of a Methyl Anthranilate Jet Reactor

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China Petroleum Processing & Petrochemical Technology 2023年第2期25卷 128-141页

作者： Chen Zhuohang Xu Lin Wang Xiaoping Song Jianhua Long Haoyu Li Xinping Liu Dianhua Xu Yongjing Chen Hebing Liu Hui Zhang Ying Lei Wei Stake Key Laboratory of chemical Engineering East China University of Science and TechnologyShanghai 200237China henan Kaifeng Pingmei shenma Xinghua Fine chemical co. LtdHenan 475003China

Methyl anthranilate(MA)is an important material for the synthesis of sodium saccharin,but the yield and quality of MA are not stable due to the batch operation *** this study,the optimum co.ditions obtained by an orthogonal test in a batch reactor were a volume ratio of methanol to amide solution of 5:4,volume ratio of sodium hypochlorite to amide solution of 7:4,Hoffmann degradation reaction duration of 10 min,Hoffmann degradation reaction temperature of 10℃,esterification reaction duration of 10 min,and esterification reaction temperature of 40℃.The working flow velocity and allowable working visco.ity range of a Venturi ejector inlet were both determined by a co.putational fluid dynamics(CFD)*** on the above experimental data,the co.tinuous operation of the process was tested in a three-stage co.tinuous reactor,which improved the product yield and quality of the process.

关键词： methyl anthranilate orthogonal test jet reactor CFD

Field-assisted co.ductive substrate sparks the redox kinetics of co.(9)S_(8) in Li-and Na-ion batteries

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Journal of Energy Chemistry 2023年第12期87卷 114-122,I0005页

作者： Huanhuan Li Yuxin Chen Huiqin Chen Yantao Wang Jinlong Li Yanping Zheng Linlin Zhang co.laborative Innovation Center of henan Province for Green Manufacturing of Fine chemicals Key Laboratory of Green Chemical Media and ReactionsMinistry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007HenanChina henan Key Laboratory of Advanced nylon Materials and Application School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001HenanChina Tonghua Normal University Tonghua 134002JilinChina

As a promising candidate electrode material in both Li-and Na-ion batteries(L/SIBs),the application of co.(9)S_(8) is being hindered by its unsatisfactory electrochemical performance caused by the sluggish ion diffusion kinetics and drastic volume ***,a hybrid material co.posed of co.(9)S_(8-x),N-doped carbon foam that seeded with co.nanoparticles(co.(9)S_(8-x)@co.NC) is ***,theoretical and experimental results imply that a built-in electric field at the interface of co.and NC is observed due to the variation of Fermi levels,forming rich Mott-Schottky-like heterointerfaces,which can significantly enhance the charge transfer capability between the active materials of co.(9)S_(8) and co.ductive NC ***,the sulfur defects in co.(9)S_(8-x)can not only effectively lower the energy barrier of the ion diffusion and charge transfer processes,but also endow the target sample with more storage/adsorption/active sites for Li^(+)/Na^(+) ions,thus improving the rate performance of the co.(9)S_(8-x)@co.NC *** a result,the co.(9)S_(8-x)@co.NC exhibits fast surface-co.trolled redox kinetics and robust cycling *** instance,the co.(9)S_(8-x)@co.NC displays impressive Li-storage properties in both half and full cells with a high reversible capacity of 1007.4 mA h g^(-1)at 0.1 A g^(-1)after 100 cycles and superior rate capability up to 5 A g^(-1).Moreover,based on these co.prehensive merits,the co.(9)S_(8-x)@co.NC co.posite shows decent electrochemical performance(472.2 and 311.1 mA h g^(-1)at 0.1 and 10 A g^(-1),respectively) as an anode for *** work presents an effective strategy for the co.struction of Mott-Schottky-like heterointerfaces in co.(9)S_(8) based materials and provides specific inspiration for future works designing high-performance electrodes via interfacial engineering.

关键词： Sulfur defects Mott-Schottky-like heterointerfaces Sodium lon Battery Anode Full cell

Hydrochemical co.straints on the Flowing Paths of Groundwater in Limestone Reservoirs beneath the Pingdingshan co.lfield in North China

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Acta Geologica Sinica(English Edition) 2024年第6期98卷 1615-1636页

作者： WU Zhanhui WANG Xinyi LI Jiexiang CUI Junchao ZHANG Bo Institute of Resources and Environment Henan Polytechnic UniversityJiaozuoHenan 454000China co.laborative Innovation Center of co.lbed Methane and Shale Gas for Central Plains Eco.omic Region JiaozuoHenan 454100China State co.laborative Innovation Center of co.l Work Safety and Clean-Efficiency Utilization JiaozuoHenan 454100China Pingdingshan Tian'an co.l Industry co. Ltd.PingdingshanHenan 467000China Institute of Energy and chemical Industry China Pingmei Shenma GroupPingdingshanHenan 467000China

The karst groundwater of Cambrian limestone may beco.e an important water source for industry and agriculture in the Pingdingshan area,and is also a potential threat to mining ***,to find out the origin,flow paths,and hydrogeochemical processes of karst groundwater beneath the Pingdingshan co.lfield,a total of 16 water samples were *** findings co.firmed that the karst groundwater is mainly recharged by *** precipitation can directly supply the deep aquifer of the karst water system through the southwest limestone outcrops,and this area mostly includes the southern part of mines No.11,No.9,and the hidden outcrops in the southern part of mine *** is more,the areas adjacent to the synclinal axis,including mines No.10,No.12,and No.8,may be the main discharge areas.A mixing model of^(87)Sr/^(86)Sr and Sr showed that in the southwest Pingdingshan co.lfield,the proportion of precipitation decreased gradually from the recharge area to the discharge area,ranging from 89.1%to 17.1%.Besides,the northeast Pingdingshan co.lfield is another recharge area for the whole karst system,thus,the infiltrating groundwater will indirectly supply the deep aquifer through Quaternary deposition near the mine *** research results can provide theoretical support for the prevention and co.trol of groundwater disasters and the development and utilization of regional groundwater resources in the co.lfield in Northern China.

关键词： groundwater flowing path hydrochemistry strontium isotope Pingdingshan co.lfield

ELECTRICAL PROPERTIES OF co.DUCTIVE POLYMER co.POSITES PREPARED BY AN INNOVATIONAL METHOD

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Chinese Journal of Polymer Science 2010年第6期28卷 869-876页

作者： Chang Lu Cui-yun Liu Zhi-zheng Li Tao Jiang Ji-chun Liu Shu-ge Peng Yu-qing Zhang Key Lab of Polymer Science and Nanotechnology Chemical Engineering&Pharmaceutics SchoolHenan University of Science and TechnologyLuoyang 471003China

An innovational method that poly(styrene-co.maleic anhydride)(SMA),a co.patibilizer of immiscible nylon6/polystyrene(PA6/PS) blends,was first reacted with carbon black(CB) and then blended with PA6/PS,has been employed to prepare the PA6/PS/(SMA-CB) co.posites of which CB localized at the *** PA6/PS/CB blends,CB was found to preferentially localize in the PA6 ***,in the PA6/PS/(SMA-CB) blends,it was found that CB particles can be induced by SMA to localize at the *** electrical porperties of PA6/PS/(SMA-CB) co.posites were *** results showed that the co.posites exhibited distinct triple perco.ation behavior,*** perco.ation is governed by the perco.ation of CB in SMA phase,the co.tinuity of SMA-CB at the interface and the co.tinuity of PA6/PS *** perco.ation threshold of PA6/PS/(SMA-CB) was only 0.15 wt%,which is much lower than that of PA6/PS/***,the PTC(positive temperature co.fficient) intensity of PA6/PS/(SMA-CB) co.posites was stronger than that of PA6/PS/CB and the negative temperature co.fficient(NTC) effect was *** electrical properties of PA6/PS/(SMA-CB) were explained in terms of its special interface morphology:SMA and CB localize at interphase to form the co.ductive pathways.

关键词： Polymer co.posites Carbon black Morphology Electrical properties