检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

纳微尺度流体传质与反应特性探索

中国科学：化学 2024年第1期54卷 3-20页

作者：张志炳李亚栋张锁江张涛李灿费维扬曹湘洪陈懿南京大学化学化工学院南京210023 清华大学化学系北京100084 中国科学院过程工程研究所北京100190 中国科学院北京100864 中国科学院大连化学物理研究所大连116023 清华大学化学工程系北京100084 中国石化集团公司北京100728 南京延长反应技术研究院南京211899 安徽师范大学芜湖241000 河南大学郑州450046

多相反应体系颗粒的运动及其相界面上的理化特性对于分子扩散、能量传输和反应转化起着决定性作用,它直接决定着整个化学转化过程的能耗、物耗甚至过程安全.本文简要介绍过去20年来南京大学团队及同行们在多相反应体系纳微流体及其界面... 详细信息

多相反应体系颗粒的运动及其相界面上的理化特性对于分子扩散、能量传输和反应转化起着决定性作用,它直接决定着整个化学转化过程的能耗、物耗甚至过程安全.本文简要介绍过去20年来南京大学团队及同行们在多相反应体系纳微流体及其界面性质与反应强化方面开展的一些探索工作,包括纳微流体界面传质与反应增强效应;单个纳微气泡的结构、运动、传质和反应特性;动态、非线性和非平衡特征;纳微流体颗粒的测试与表征;纳微气–液(水溶液)体系的羟基自由基检测及其新化学效应;以及纳微流体在反应强化方面的应用等.研究表明,纳微流体具有明显区别于宏观流体的理化特性,是一个极具挑战性的新兴领域,亟需进行深入研究和开发.在理论方面,需要在考虑动态、非平衡和尺度效应的基础上对经典的物理化学和平衡热力学的相关理论进行修正与拓展;在实验方面,需要设计和建立适用于纳微流体、动态、原位和多因子测试的仪器和表征系统;在应用方面,需要发明可大规模制备(10^(3)~10^(6)m^(3)h^(-1))和调控纳微颗粒尺度、特别是在大气液比(如5:1~100:1)情况下的纳微界面发生装置,同时开发面向千差万别应用场景的纳微流体反应器平台及操控系统.

关键词：纳微流体纳微气泡自由基检测传质反应强化

Comparative catalytic study on butene/isobutane alkylation over LaX and CeX zeolites: The influence of calcination atmosphere

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2022年第6期35卷 173-183页

作者： Zhiqiang Yang Ruirui zhang Honghua zhang Hongguo Tang Ruixia Liu suojiang zhang School of Chemical Engineering&Technology Tianjin UniversityTianjin 300072China Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Multiphase Complex SystemsCAS Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of Sciences100049 BeijingChina School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

Lanthanum-containing(LaX)and cerium-containing X zeolites(CeX)were prepared by a doubleexchange,double-calcination *** changing the calcination atmospheres between nitrogen and air,the Ce^(IV) contents in CeX zeolites were adjusted and their impacts on physicochemical properties and catalytic performance in isobutane alkylation were *** crystallinity of CeX zeolite was found to be negatively correlated with the Ce^(IV) *** i s believed to be due to the water formed during the oxidation of Ce^(III),which facilitates the framework *** a consequence,calcining in air resulted in a great elimination of strong Brønsted acid sites while under nitrogen protection,this phenomenon was mostly hindered and the sample’s acidity was *** tested in a continuously flowed slurry reactor,the catalyst lifetime for isobutane alkylation was found to be linearly related to the strong Brønsted acid *** addition,Ce^(3+)was found more benefit for the hydride transfer compared with La^(3+),which is ascribed to the stronger polarization effect on the CH bond of ***,the decline of hydride transfer activity can be slowed down by the catalytic cracking of the bulky *** on the product distribution,a new catalytic cycle of dimethylhexanes(DMHs)involving a direct formation of isobutene rather than tert-butyl carbocation was proposed in isobutane alkylation.

关键词： CeX zeolite Calcination atmosphere Isobutane alkylation Brønsted acid Hydride transfer

在线全文

学校读者我要写书评

暂无评论

纳微尺度热力学与前沿应用

中国科学：化学 2024年第1期54卷 112-120页

作者：王艳磊刘亚伟董坤何宏艳李垚张锁江中国科学院过程工程研究所北京100190

在实际化工过程中,纳微尺度界面体系普遍存在,且与反应和传递等过程高度耦合.这种耦合增加了直接应用宏观热力学模型和规律的难度,进而在工程预测、放大及调控方面带来挑战,制约了绿色化工技术创新和规模应用的发展.本文针对纳微尺度热... 详细信息

在实际化工过程中,纳微尺度界面体系普遍存在,且与反应和传递等过程高度耦合.这种耦合增加了直接应用宏观热力学模型和规律的难度,进而在工程预测、放大及调控方面带来挑战,制约了绿色化工技术创新和规模应用的发展.本文针对纳微尺度热力学的起源、内涵及其在前沿领域的应用进行了深入探讨.首先,以绿色介质离子液体为例,展示了纳微尺度下的独特界面结构和功能,讨论了离子液体结构–功能间的纳微尺度热力学关联机制;然后,概述了适用于纳微尺度热力学领域的研究方法,提出了集合高精度原位动态实验、精准高效计算模拟和高通量自动化人工智能相结合的研究范式;随后,总结了纳微尺度热力学理论在反应、分离和电化学领域的前沿应用,并对其挑战和未来机遇进行了深入讨论和展望.总之,纳微尺度热力学的新理论和新方法,不仅可以为化工学科的科学研究开辟新的视野和路径,还将推动化工过程实现从“分子设计→结构功能调控→工程放大规律”的跨越,催生出适应于新体系、新应用和新需求的化工热力学新学科.

关键词：热力学离子液体纳微界面绿色化工

Rare-earth separation based on the differences of ionic magnetic moment via quasi-liquid strategy

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2022年第11期16卷 1584-1594页

作者： Na Wang Fujian Li Bangyu Fan suojiang zhang Lu Bai Xiangping zhang College of Chemical and Engineering Zhengzhou UniversityZhengzhou 450001China CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex SystemsBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process Engineering and Innovation Academy for Green ManufactureChinese Academy of SciencesBeijing 100190China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China College of Chemistry Nanchang UniversityNanchang 330031China

The separation of rare earth elements is particularly difficult due to their similar physicochemical *** on the tiny differences of ionic radius,solvent extraction has been developed as the“mass method”in industry with hundreds of stages,extremely intensive chemical consumption and large capital *** differences of the ionic magnetic moment among rare earths are greater than that of ionic ***,a novel method based on the large ionic magnetic moment differences of rare earth elements was proposed to promote the separation *** earths were firstly dissolved in the ionic liquid,then the ordering degree of them was improved with the Z-bond effect,and finally the magnetic moment differences between paramagnetic and diamagnetic rare earths in quasi-liquid system were *** the separation of Er/Y,Ho/Y and Er/Ho as examples,the results showed that Er(Ⅲ)and Ho(Ⅲ)containing ionic liquids had obvious magnetic response,while ionic liquids containing Y(Ⅲ)had no *** separation factors of Er/Y and Ho/Y were achieved at 9.0 and 28.82,*** separation via quasi-liquid system strategy provides a possibility of the novel,green,and efficient method for rare earth separation.

关键词： rare earth element different magnetic moment magnetic separation ionic liquid

Advanced Nonflammable Localized High-Concentration Electrolyte For High Energy Density Lithium Battery

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2022年第4期5卷 1294-1302页

作者： Mengmin Jia Chi zhang Yawei Guo Linshan Peng Xiaoyan zhang Weiwei Qian Lan zhang suojiang zhang CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China Langfang Institute of Process Engineering Chinese Academy of SciencesHebei 065001China

The key to realize long-life high energy density lithium batteries is to exploit functional electrolytes capable of stabilizing both high voltage cathode and lithium *** emergence of localized high-concentration electrolytes(LHCEs)shows great promise for ameliorating the above-mentioned interfacial *** this work,a lithium difluoro(oxalate)borate(LiDFOB)based nonflammable dual-anion LHCE is designed and *** in the mixture of trimethyl phosphate(TMP)/1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropylether(D_(2)),the continuously consumption of LiDFOB is suppressed by simply introducing lithium nitrate(LiNO_(3)).Meantime,as most of the TMP molecular are coordinated with Li^(+),the electrolyte does not show incompatibility issue between neither metal lithium nor graphite ***,it demonstrates excellent capability in stabilizing the interface of Ni-rich cathode and regulating lithium deposition *** Li||LiNi_(0.87)Co_(0.08)Mn_(0.05)O_(2)(NCM87)batteries exhibit high capacity retention of more than 90%after 200 cycles even under the high cutoff voltage of 4.5 V,1 C *** study offers a prospective method to develop safe electrolytes suitable for high voltage applications,thus providing higher energy densities.

关键词： dual-anion lithium metal battery localized high-concentration electrolyte nonflammable phosphate

A novel strategy of lithium recycling from spent lithium-ion batteries using imidazolium ionic liquid

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2022年第1期35卷 246-251页

作者： Hongshuai Zheng Jiaqi Huang Tao Dong Yifan Sha Haitao zhang Jie Gao suojiang zhang CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Ionic Liquids Clean ProcessState Key Laboratory of Multiphase Complex SystemsInnovation Academy for Green ManufactureInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450002China Ningbo Institute of Materials Technology&Engineering Chinese Academy of SciencesNingbo 315201China

In light of the increasing demand for environmental protection and energy conservation,the recovery of highly valuable metals,such as Li,Co,and Ni,from spent lithium-ion batteries(LIBs)has attracted widespread *** conventional recycling strategies,however,suffer from a lack of lithium recycling,although they display high efficiency in the recovery of Co and *** this work,we report an efficient extraction process of lithium from the spent LIBs by using a functional imidazolium ionic *** extraction efficiency can be reached to 92.5%after a three-stage extraction,while the extraction efficiency of Ni-Co-Mn is less than 4.0%.The new process shows a high selectivity of lithium *** spectroscopy and ultraviolet are utilized to characterize the variations in the functional groups during extraction to reveal that the possible extraction mechanism is cation *** results of this work provide an effective and sustainable strategy of lithium recycling from spent LIBs.

关键词： Ionic liquid Lithium Selective extraction Spent lithium batteries Recovery

Revolutionary technology of low-carbon chemical processes

在线全文

学校读者我要写书评

暂无评论

National Science Review 2023年第9期10卷 15-17页

作者： suojiang zhang Xiangping zhang Chunyan Shi Ke Wang Lei Yuan Institute of Process Engineering Chinese Academy of Sciences Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology 3. College of Energy Science and Technology Henan University

The chemical industry is one of the key sectors in *** chemical processes heavily rely on fossil fuels as energy resources and feedstocks,which inevitably emits a huge amount of *** the global initiative and actions of carbon neutrality,the energy revolution of renewable energy replacing fossil fuels is further promoted towards the ultimate goal that fossil fuels will be fully replaced in the future [1].

关键词：

Advances and challenges of electrolyzers for large-scale CO_(2) electroreduction

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Materials Reports(Energy) 2023年第1期3卷 1-18,I0002页

作者： Lei Yuan Shaojuan Zeng Xiangping zhang Xiaoyan Ji suojiang zhang Beijing Key Laboratory of Ionic Liquids Clean Process State Key Laboratory of Resource and Low Carbon ProcessInstitute of Process EngineeringInnovation Academy for Green Manufacture InstituteChinese Academy of SciencesBeijing100190China College of Chemical Engineering Zhengzhou UniversityZhengzhou450001China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial TechnologyHenan UniversityZhengzhou450000China Division of Energy Science/Energy Engineering Department of Engineering Sciences and MathematicsLuleåUniversity of TechnologyLuleå97187Sweden

CO_(2) electroreduction(CO_(2) ER)to high value-added chemicals is considered as a promising technology to achieve sustainable carbon *** virtue of the progressive research in recent years aiming at design and understanding of catalytic materials and electrolyte systems,the CO_(2) ER performance(such as current density,selectivity,stability,CO_(2) conversion,etc.)has been continually ***,there has been relatively little attention paid to the large-scale CO 2 electrolyzers,which stand just as one obstacle,alongside series-parallel integration,challenging the practical application of this infant *** this review,the latest progress on the structures of low-temperature CO_(2) electrolyzers and scale-up studies was systematically *** influence of the CO_(2) electrolyzer configurations,such as the flow channel design,gas diffusion electrode(GDE)and ion exchange membrane(IEM),on the CO_(2) ER performance was further *** review could provide inspiration for the design of large-scale CO_(2) electrolyzers so as to accelerate the industrial application of CO_(2) ER technology.

关键词： CO_(2) electroreduction Large-scale CO_(2) electrolyzer Flow channel Gas diffusion electrode Ion exchange membrane

Principles and strategies for green process engineering

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Green Chemical Engineering 2022年第1期3卷 1-4页

作者： suojiang zhang Hongyan He Qing Zhou Xiangping zhang Xingmei Lu Yuan Tian Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and EngineeringInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing100190China

The evolution of human civilization is becoming increasingly synchronized with the development of science and technology. Every step toward advancement achieved by humans showcases our creativity and ability to realize ideas in practice. However, due to human activities aimed at goal fulfillment, Mother Earth has undeniably undergone many irreversible changes, which in turn have negatively impacted the environment [1].

关键词： becoming irreversible advancement