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湖南造纸 2008年第2期 19-21页

作者：王克全李国秀王春东李建文詹怀宇山东省潍坊市环保局山东潍坊261041 华南理工大学制浆造纸工程国家重点实验室广东广州510640

介绍了表面施胶剂在国内外造纸工业的应用现状,将其划分为天然高分子和合成聚合物两大类,分别概述产品功能及制备方法,着重介绍了改性淀粉、苯乙烯类共聚物、AKD改性产品的研究现状及发展趋势,并对今后的研究重点进行展望。

关键词：表面施胶剂天然高分子合成聚合物改性淀粉苯乙烯类共聚物

Green catalytic engineering:A powerful tool for sustainable development in chemical industry

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Frontiers of Chemical Science and Engineering 2018年第4期12卷 835-837页

作者： kequan Chen Dangguo Cheng Chong Peng Dan wang Jintao Zhang State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical Engineering Nanjhag Tech UniversityNanjing 211816China Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Dalian Research Institute of Petroleum and Petrochemicals SINOPECDalian 116045China State Key Laboratory of Organic-Inorganic Composites College of Chemical EngineeringBeijing University of Chemical Technology Beijing 100029China Key Laboratory for Colloid and Interface Chemistry (Ministry of Education) School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100China

Catalysts play critical roles in modern chemical industry and more than 85% of all chemical processes involve the use of catalysts. The sustainable development of chemical industry calls for green catalytic engineering, which refers to the engineering design and development of environment- friendly, high-efficiency and cost-effective catalysts and catalytic processes for the Industrial manufacture of useful products and energy. It may be difficult to predict the future, but we are glad to identify the current trends that are likely to become ever more important, which is green catalytic engineering. To emphasize the latest advances in the exciting field, to explore efficient strategies for the future development, and to address challenges in chemical industry, we presents a Mini-Special Issue in Frontiers of Chemical Science and Engineering that highlights two featured research articles and three reviews on green catalytic engineering.

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Efficient production of cyclic adenosine monophosphate from adenosine triphosphate by the N-terminal half of adenylate cyclase from Escherichia coli

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Chinese Journal of Chemical Engineering 2020年第8期28卷 2167-2172页

作者： Chen Ma Jing wang Xuelin wang Dandan Mai Yuqi Jin kequan Chen Xin wang Pingkai Ouyang State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing 211816China

In this study,we aimed at developing an efficient biocatalytic process for bio-production of cyclic adenosine monophosphate(c AMP)from adenosine triphosphate(ATP).First,adenylate cyclase from Escherichia coli MG1655(EAC)and Bordetella Pertussis(BAC)were expressed in *** BL21(DE3)and comparatively analyzed for their *** a result,EAC from *** MG1655 exhibited a higher ***,amount of EAC were obtained in an insoluble ***,we expressed the first 446 amino acids of EAC(EAC446)to avoid the inclusion *** effects of induction temperature,incubation time,and incubation p H were further evaluated to improve the expression of ***,the reaction process for the production of c AMP with ATP as a starting material was *** none of c AMP was detected in the whole-cell based biocatalytic process,the reaction catalyzed by the crude enzyme was determined for c AMP ***'s more,the reaction temperature,reaction p H,metal ion additives and substrate concentration was optimized,and the maximum c AMP production of 18.45 g·L^-1was achieved with a yield of 95.4%after bioconversion of 6 h.

关键词： Adenylate cyclase Cyclic adenosine monophosphate(cAMP) Adenosine triphosphate(ATP) Bioconversion

Effect of Nb-V microalloying on the hot deformation behavior of medium Mn steels

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 360-368页

作者： Yumeng wang Qinyi Guo Bin Hu Haiwen Luo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The influence of Nb-V microalloying on the hot deformation behavior and microstructures of medium Mn steel(MMS)was investigated by uniaxial hot compression *** establishing the constitutive equations for simulating the measured flow curves,we successfully constructed deformation activation energy(Q)maps and processing maps for identifying the region of flow *** concluded the following consequences of Nb-V alloying for MMS.(i)The critical strain increases and the increment diminishes with the increasing deformation temperature,suggesting that NbC precipitates more efficiently retard dynamic recrystallization(DRX)in MMS compared with solute Nb.(ii)The deformation activation energy of MMS is significantly increased and even higher than that of some reported high Mn steels,suggesting that its ability to retard DRX is greater than that of the high Mn content.(iii)The hot workability of MMS is improved by narrowing the hot processing window for the unstable flow stress,in which fine recrystallized and coarse unrecrystallized grains are present.

关键词： medium manganese steel niobium-vanadium microalloying flow behavior dynamic recrystallization hot workability

High-energy-density lithium manganese iron phosphate for lithium-ion batteries: Progresses, challenges, and prospects

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Journal of Energy Chemistry 2025年第1期100卷 1-17页

作者： Bokun Zhang Xiaoyun wang Shuai wang Yan Li Libo Chen Handong Jiao Zhijing Yu Jiguo Tu State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Research Institute for Intelligent Wearable Systems The Hong Kong Polytechnic University Institute of Advanced Structure Technology Beijing Institute of Technology

The soaring demand for smart portable electronics and electric vehicles is propelling the advancements in high-energy–density lithium-ion *** manganese iron phosphate (LiMnxFe1-xPO4) has garnered significant attention as a promising positive electrode material for lithium-ion batteries due to its advantages of low cost,high safety,long cycle life,high voltage,good high-temperature performance,and high energy *** LiMnxFe1-xPO4has made significant breakthroughs in the past few decades,there are still facing great challenges in poor electronic conductivity and Li-ion diffusion,manganese dissolution affecting battery cycling performance,as well as low tap *** review systematically summarizes the reaction mechanisms,various synthesis methods,and electrochemical properties of LiMnxFe1-xPO4to analyze reaction processes accurately and guide material ***,the main challenges currently faced are concluded,and the corresponding various modification strategies are discussed to enhance the reaction kinetics and electrochemical performance of LiMnxFe1-xPO4,including multi-scale particle regulation,heteroatom doping,surface coating,as well as microscopic morphology ***,in view of the current research challenges faced by intrinsic reaction processes,kinetics,and energy storage applications,the promising research directions are *** importantly,it is expected to provide key insights into the development of high-performance and stable LiMnxFe1-xPO4materials,to achieve practical energy storage requirements.

关键词： Lithium manganese iron phosphate High energy density Lithium-ion batteries Reaction mechanism Tap density

Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong wang Pengyang wang Yali Liu Shanshan Qi Biao Shi Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE

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基于灯联网的雾霾监控系统开发与研究

徐州工程学院学报（自然科学版） 2015年第2期30卷 54-57页

作者：滕道祥王健王克权刘爱云杨宏光马晓杰徐州工程学院江苏徐州221018

为有效监测与预警持续雾霾天气造成的污染,开发了基于灯联网的雾霾监控系统.该系统在现有的城市道路路灯系统网络上加入雾霾检测设备,通过上位机应用程序和无线通讯模块实现远程监控,并利用下位机控制亮灯时间以及雾霾数据信息的采集与... 详细信息

为有效监测与预警持续雾霾天气造成的污染,开发了基于灯联网的雾霾监控系统.该系统在现有的城市道路路灯系统网络上加入雾霾检测设备,通过上位机应用程序和无线通讯模块实现远程监控,并利用下位机控制亮灯时间以及雾霾数据信息的采集与反馈,解决了物联网基站搭建成本高、供电难等问题,便于环境监测与管理部门对雾霾天气的预测与防治.

关键词：灯联网 VB PM2.5

Are shared electric scooters energy efficient?

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Communications in Transportation Research 2021年第1期1卷 182-192页

作者： Yuxuan wang Jiaming Wu kequan Chen Pan Liu Jiangsu Key Laboratory of Urban ITS School of TransportationSoutheast UniversitySi Pai Lou#2Nanjing210096China Department of Architecture and Civil Engineering Chalmers University of TechnologyGothenburgSE41296Sweden

Shared electric scooters(e-scooter)are booming across the world and widely regarded as a sustainable mobility *** increasing number of studies have investigated the e-scooter trip patterns,safety risks,and environmental impacts,but few considered the energy efficiency of *** this research,we collected the operational data of e-scooters from a major provider in Gothenburg to shed light on the energy efficiency performance of e-scooters in real *** first develop a multiple logarithmic regression model to examine the energy consumption of single trips and influencing *** the regression model,a Monte Carlo simulation framework is proposed to estimate the fleet energy consumption in various scenarios,taking into account both trip-related energy usage and energy loss in idle *** results indicate that 40%of e-scooter battery energy was wasted in idle status in the current practice,mainly due to the relatively low usage rate(0.83)of *** the average usage rate drops below 0.5,the wasted energy could reach up to 53%.In the end,we present a field example to showcase how to optimally integrate public transport with e-scooters from the perspective of energy *** hope the findings of this study could help understand and resolve the current and future challenges regarding the ever-growing e-scooter services.

关键词： E-scooters Shared mobility Sustainable transportation Monte Carlo simulation

Characterization and application of a recombinant dopa decarboxylase from Harmonia axyridis for the efficient biosynthesis of dopamine

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Chinese Journal of Chemical Engineering 2022年第1期35卷 449-456页

作者： Siyuan Gao Yuanke Guo Chen Ma Ding Ma kequan Chen Pingkai Ouyang Xin wang State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing 211816China

Here,a dopa decarboxylase(DDC)from Harmonia axyridis was heterogeneously expressed in Escherichia coli for the efficient biosynthesis of *** the production of recombinant DDC,the cultivation conditions including IPTG concentration,temperature and induction time were optimized and obtained an optimal specific enzyme activity of 51.72 U·mg^(-1) crude *** the purification of DDC with a recovery yield of 68.79%,its activity was further *** Vmax,Km,Kcat,and Kcat/Km of DDC for d ihyd roxy pheny la la nine(dopa)were 0.02 mmol·ml^(-1)·s^(-1),2.328 mmol·ml^(-1),10435.90 s^(-1) and4482.77 ml,mmol *** highest DDC activity was observed at the condition of pH 7.5 and 45℃.With the purified DDC,the feasibility to produce dopamine from L-dopa was *** optimal yield was determined at the following bioconversion conditions:pH of 7,0,the reaction temperature of 40℃,0.4 mmol·L^(-1) of PLP and 4 g·L^(-1) of L-dopa,Subsequently,a fed-batch process for the production of dopamine was developed and the effect of oxygen was *** titer,yield and productivity of dopamine reached up to 21.99 g·L^(-1)80.88%and 14.66 g·L^(-1)·h^(-1) at 90 min under anaerobic condition.

关键词： Dopa decarboxylase Dopamine Enzyme catalysis Fed-batch bioconversion

The production of enantiopure D-lysine from L-lysine by a two-strain coupled system

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Chinese Journal of Chemical Engineering 2020年第11期28卷 2832-2836页

作者： Sheng Xu Xiaolu Lu Xin wang Zhen Gao kequan Chen Pingkai Ouyang State Key Laboratory of Materials-Oriented Chemical Engineering College of Biotechnology and Pharmaceutical EngineeringNanjing Tech UniversityNanjing 211816China

The microbial production of D-lysine to replace chemical approach has gained great interest with the rising concerns over the ***,we employed recombinant *** strain BL21-LYR with lysine racemase and strain BL-22A-RB-YB with L-lysine monooxygenase and 5-aminovaleramide amidohydrolase to establish a two-strain coupling whole-cell bioconversion system for D-lysine production from *** improve the optical purity of D-lysine,the optimal reaction condition for resolution of DL-lysine after the racemization was *** specificity of BL-22A-RB-YB for L^-lysine and the effects of reaction condition on bioconversion efficiency of whole-cell were accordingly *** the optimal condition,a maximum 53.5 g·L^-1 D-lysine and 48.2 g·L^-15-AVA were obtained with yield of 47.4%and 42.3%,respectively,by the microbial racemization and asymmetric degradation *** final D-lysine enantiomeric excess was over 99%.Meanwhile,a valuable compound 5-aminovaleric acid was synthesized with the production of D-lysine,indicating the economic feasibility of the two-strain coupling system.

关键词： _D-Lysine Microbial resolution Two-strain coupling system