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Enhanced carbon capture with motif-rich amino acid loaded defective robust metal-organic frameworks

Nano Research 2024年第3期17卷 2004-2010页

作者： Qi-Ye Ju Jia-Jia Zheng Li Xu Hai-Yan Jiang Zi-Qian Xue Lu Bai Yang-Yang Guo Ming-Shui Yao Ting-Yu Zhu State Key Laboratory of Multi-phase Complex Systems CAS Key Laboratory of Green Process and EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Laboratory of Theoretical and Computational Nanoscience National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing 100190China School of Rare Earths University of Science and Technology of ChinaHefei 230026China Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341000China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Institute for Integrated Cell-Material Sciences Kyoto UniversityInstitute for Advanced StudyKyoto UniversityYoshidaUshinomiya-choSakyokuKyoto 606-8501Japan

The use of metal-organic frameworks(MOFs)as solid adsorption materials for carbon capture is promising,but achieving efficient and reversible adsorption with a balance of capacity and selectivity for carbon dioxide(CO_(2))over N_(2) remains a *** take full advantage of the strong channel traffic and robustness of MOFs with relatively small pores,it is highly necessary to employ a defect-engineering strategy to construct a broader channel structure that can facilitate the loading of functional motif-rich amino acids(AAs).This strategy can greatly enhance the CO_(2) adsorption performance of *** this study,motif-rich amino acids are loaded into the defective and robust porous frameworks via combined defect-engineering and post-synthetic *** defective Zr/Hf-MOF-808s modified with AAs,especially for the 18 mol%4-nitroisophthalic acid,generated defective products allowing for the loading of L-serine(L-Ser).This modification resulted in a significant improvement in both the adsorption capacity(248%improvement at 298 K,100 kPa)and the selectivity of CO_(2)/N_(2) using the ideal adsorbed solution theory(IAST),with the selectivity increasing to 120.55 and 38.27 at 15 and 100 kPa,respectively,while maintaining good cycling *** functional theory(DFT)simulation,CO_(2) temperature-programmed desorption(CO_(2)-TPD),and in situ Fourier transform infrared spectroscopy(FTIR)were further employed to have a better understanding of the enhanced CO_(2) adsorption ***,unlike the AAs loaded pristine MOF-808s that showed the best CO_(2) adsorption capacity with the loading of short and small glycine(Gly),the broadened channel size in our work enables the loading of functional motif-rich L-serine,which brings more active binding sites,improving CO_(2) adsorption.

关键词： carbon capture and storage metal-organic framework(MOF) amino acids(AAs) defect-engineering motif-rich

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A time-step based steam accumulator simulation to define the optimal storage capacity

A time-step based steam accumulator simulation to define the...

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2023 Power and Energy Student Summit, PESS 2023

作者： Maletz, Maja Wolter, Martin Sauerhering, Jörg Institute of Electric Power Systems Otto von Guericke University Magdeburg Germany Department 7 – Applied Biosciences and Process Engineering University of Applied Sciences Anhalt Köthen Germany

ISBN: (纸本)9783800763191

A central point on the way to the increased integration of renewable energy sources is the possibility of energy storage. Since energy generation from renewable energy sources is highly volatile and dependent on external conditions - not on the consumer - energy storage systems are very important. Steam is used as a medium for many processes, especially in the industry. This paper therefore addresses the dimensioning of steam accumulators, a technology that is gaining in importance. It is emphasised why the integration of a steam accumulator is often the better option for storing oversupplied energy compared to an enlarged steam boiler volume. In addition, a transient simulation programme is presented that specifies and accelerates the dimensioning of steam accumulators. This is an improvement compared to todays practice of only estimating the steam accumulator based on empirical values. The programme uses a consumer load curve and the characteristic values of the steam generator to determine the state of charge of the boiler and of the steam accumulator for each time step. In addition, the calculation procedure is explained for one parameter as an example and the results are interpreted. © VDE VERLAG GMBH.

关键词： Steam accumulators

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Heterogeneous numerical modelling for the auto thermal reforming of crude glycerol in a fixed bed reactor

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Chinese Journal of Chemical engineering 2022年第2期35卷 261-268页

作者： Jason Williams Hussameldin Ibrahim Nima Karimi Kelvin Tsun Wai Ng Clean Energy Technologies Research Institute Process Systems EngineeringFaculty of Engineering and Applied ScienceUniversity of ReginaRegina SK S4S 0A2Canada Environmental Systems Engineering Faculty of Engineering and Applied ScienceUniversity of ReginaRegina SK S4S 0A2Canada

A mathematical model for the catalytic autothermal reforming(ATR)reaction of synthetic crude glycerol to hydrogen in a fixed bed tubular reactor(FBTR)and over an in-house developed metal oxide catalyst is presented in this *** heterogeneous model equations account for a two-phase system of solid catalyst and bulk feed ***,the ATR of crude glycerol reaction scheme and intrinsic kinetic rate model over an active,selective,and stable nickel-based catalyst were integrated in the developed ***,the model was validated using experimental data generated in our labs for the ATR of synthetic crude *** modelling results adequately described the detailed gas product composition and distribution,temperature profiles,and conversion propagation in the axial direction of the fixed bed reactor over a wide range of reaction temperature(773–923 K)and mass-time(12.71–158.23 g cat·min·(mol C)^(-1)).The crude glycerol conversion predicted with the model showing a close resemblance to those obtained experimentally with an average absolute deviation(AAD)of less than 8%.The maximum crude glycerol conversion and hydrogen yield were found to be 92%and 3 mol hydrogen/mol crude glycerol,***,the gas product concentration profile in the reactor was adequately described(90%)accuracy with a hydrogen concentration of 39%(volume).

关键词： Hydrogen crude glycerol Autothermal reforming Numerical analysis Fixed-bed reactor

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Robotic arm controlled Acoustofluidic End-Effector for particle manipulation 26

Robotic arm controlled Acoustofluidic End-Effector for parti...

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26th International Conference on Miniaturized systems for Chemistry and Life Sciences, MicroTAS 2022

作者： Durrer, Jan Agrawal, Prajwal Ahmed, Daniel Acoustic Robotics Systems Laboratory Institute for Mechanical Systems Department of Mechanical and Process Engineering ETH Zurich Rushlikon8803 Switzerland

ISBN: (纸本)9781733419048

With the development of microfluidics, fluid manipulation is becoming an increasingly critical process. In the macroscale environment, numerous robotic systems are commercially available, however development of these systems at the microscale requires expensive equipment's and reagents, as well as sample preparation at the microscale is relatively difficult. This work integrates robotics and microfluidics in order to demonstrate a robot-assisted acoustofluidic microscale manipulation system (RAMS), incorporating an acoustofluidic end effector and a robotic arm. This RAMS device will open the door to new potential applications such as micromixing, pumping, particle manipulation, and transfection, for example. © 2022 MicroTAS 2022 - 26th International Conference on Miniaturized systems for Chemistry and Life Sciences. All rights reserved.

关键词： End effectors

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Microparticle orientation and pattern in a combined acoustic and magnetic field 26

Microparticle orientation and pattern in a combined acoustic...

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26th International Conference on Miniaturized systems for Chemistry and Life Sciences, MicroTAS 2022

作者： Zhang, Zhiyuan Ahmed, Daniel Acoustic Robotics Systems Laboratory Institute of Robotics and Intelligent Systems Department of Mechanical and Process Engineering ETH Zurich Zurich Switzerland

ISBN: (纸本)9781733419048

Microparticle manipulation actuating by external fields, magnetic fields and acoustic fields, are attractive for lab-on-chip systems and microscale medical applications since they allow for the manipulation of microparticles without contact, and unaffected by object opacity. The combination of both fields could overcome the limitations encountered by single actuation methods and provide more freedoms of operations. Here we demonstrate the intentional control over the local orientation and pattern of microparticles in a bulk liquid medium, impelled by a combination of magnetic and acoustic fields. © 2022 MicroTAS 2022 - 26th International Conference on Miniaturized systems for Chemistry and Life Sciences. All rights reserved.

关键词： Acoustic fields

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Research progress of steel slag-based carbon sequestration

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Fundamental Research 2025年第1期5卷 282-287页

作者： Qing Zhao Chengjun Liu Xiaohui Mei Henrik Saxén Ron Zevenhoven Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China Process and Systems Engineering Laboratory Åbo Akademi UniversityÅbo/Turku 20500Finland

Large amounts of steel slag(SS)and CO_(2)are produced globally each year during steel *** SS-based carbon capture and utilization(SS-CCU)process for CO_(2)mineralization is suitable specifically for steel-making industries for simultaneous mitigation of CO_(2)emissions and valorization of ***,the SS-CCU process is currently in the stage of laboratory research and far away from industrial *** this review,some SS-CCU processes,including direct and indirect carbonation processes,were explored and ***,the key factors and mechanisms of the SS-based CO_(2)sequestration process were *** carbonation process efficacy and its environmental impact(including global warming,energy use,water use,and metallic pollutants)were ***,the challenges and prospects of the further development of the SS-CCU process were discussed.

关键词： Steel slag Carbon sequestration Carbon neutrality Resources recycling Carbonation

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Power Loss Analysis of Energy Management System with Model Predictive control in Mae Hong Son Microgrid 3

Power Loss Analysis of Energy Management System with Model P...

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3rd IEEE International Conference on Power Electronics, Intelligent control and Energy systems, ICPEICES 2024

作者： Prapanwattana, Nattakit Dechawatanapaisal, Donlapat Banjerdpongchai, David Rajan, Abhishek Center of Excellence in Intelligent Control Automation for Process Systems Chulalongkorn University Faculty of Engineering Dept. of Electrical Engineering 254 Phayathai Rd Bangkok Pathumwan10310 Thailand National Institute of Technology Sikkim Dept. of Electrical Engineering South Sikkim Ravangla737139 India

ISBN: (纸本)9798350387193

Energy management system (EMS) is an important tool for energy efficiency and reliability of the power system. The optimal power dispatch of energy resources can be obtained using the nonlinear model predictive control (NMPC). It is formulated as an optimization problem subject to linear and nonlinear constraints. Although the existing system works well under the current conditions, power loss has not been considered. Power loss in transmission lines occurs due to their resistance and a high amount of power flow to loads connecting to the system. The power loss leads to decreased efficiency in the electrical system and reduces the lifespan of equipment because of the high temperature from loss. This paper aims to analyze the power loss in the Mae Hong Son (MHS) microgrid. To achieve the research objectives, we employ the EMS of MHS with NMPC and calculate power loss in transmission lines for a period of 7 days. EMS considers three objective functions, namely, total operating cost, total carbon dioxide emission, and combined economic and emission dispatch and take into account of three seasons consisting of rainy, winter, and summer. © 2024 IEEE.

关键词： Predictive control systems

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Analytical Description of Transversally Symmetric Hinges with Semicircular Contours 16th

Analytical Description of Transversally Symmetric Hinges wi...

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16th International Federation of Theory of Machines and Mechanisms World Congress, IFToMM WC 2023

作者： Jahn, Hannes Fröhlich, Thomas Zentner, Lena TU Ilmenau Department of Mechanical Engineering Mechanics of Compliant Systems Group Ilmenau98693 Germany TU Ilmenau Department of Mechanical Engineering Institute of Process Measurement and Sensor Technology Ilmenau98693 Germany

ISBN: (纸本)9783031457081

Compliant mechanisms are becoming increasingly important, especially in force measurement and weighing technology, due to their zero backlash, wear resistance, and zero friction. Their deformation under external forces can be analyzed well with analytical calculations and FEM simulations. Analytically, only mechanisms with symmetrical and longitudinally symmetrical hinges are described. This paper presents a method that allows transversally symmetric hinges to be described analytically. The model must be computed numerically due to the built neutral fiber and the nonlinearities in the used calculation method. The developed method is then compared with FEM calculations in a parameter study and considered to be validated. Finally, outlooks are formulated on how the created method can for instance be used to develop load cells for later calculations. Moreover, it is shown to what extent it is possible to implement this method for general calculations of compliant mechanisms. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Hinges

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Hydrogen-based direct reduction of industrial iron ore pellets:Statistically designed experiments and computational simulation

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International Journal of Minerals,Metallurgy and Materials 2022年第10期29卷 1908-1921页

作者： Patrícia Metolina Tiago Ramos Ribeiro Roberto Guardani Chemical Systems Engineering Center Department of Chemical EngineeringUniversity of São PauloSão Paulo 05508-900Brazil Metallurgical Process Laboratory Institute of Technological ResearchSão Paulo 05508-901Brazil

As part of efforts to reduce anthropogenic CO_(2) emissions by the steelmaking industry,this study investigated the direct reduction of industrially produced hematite pellets with H_(2) using the Doehlert experimental design to evaluate the effect of pellet diameter(10.5-16.5 mm),porosity(0.36-0.44),and temperature(600-1200℃).A strong interactive effect between temperature and pellet size was observed,indicating that these variables cannot be considered *** increase in temperature and decrease in pellet size considerably favor the reduction rate,while porosity did not show a relevant *** change in pellet size during the reduction was negligible,except at elevated temperatures due to crack formation.A considerable decrease in mechanical strength at high temperatures suggests a maximum process operating temperature of 900℃.Good predictive capacity was achieved using the modified grain model to simulate the three consecutive non-catalytic gas-solid reactions,considering different pellet sizes and porosities,changes during the reaction from 800 to 900℃.However,for other temperatures,different mechanisms of structural modifications must be considered in the *** results represent significant contributions to the development of ore pellets for CO_(2)-free steelmaking technology.

关键词： hydrogen use non-catalytic gas-solid reaction grain model porous hematite pellet CO_(2)emissions reduction Doehlert experimental design

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Optimizing crude oil operations scheduling considering blending in tanks

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IFAC-PapersOnLine 2024年第14期58卷 67-72页

作者： Tomas Garcia Garcia-Verdier Gloria Gutierrez Carlos Mendez Cesar de Prada Dpt. of Systems Engineering and Automatic Control University of Valladolid Valladolid Spain Institute of Sustainable Processes University of Valladolid Valladolid Spain Center for Advanced Process Systems Engineering (CAPSE) INTEC (UNL - CONICET) Argentina

This paper focuses on the optimization of crude oil operations scheduling in a refinery that is supplied with crude oil by ship. One of the main challenges associated with the crude oil operations scheduling problem is the management of crude storage in tanks. Since storage capacity is limited and there are several types of crude oil depending on their composition, it is necessary to store mixtures of crude oil in tanks. This feature makes necessary the inclusion of nonlinear, non-convex constraints, which complicates the resolution of mathematical programming models. To address this problem, we have developed a mathematical programming model based on a continuous-time formulation using time slots, along with a strategy based on piecewise McCormick relaxation that allows us to efficiently handle the nonlinear constraints generated by blending crude oils in tanks.

关键词： Modelling decision making in complex systems Efficient strategies for large scale complex systems Production planning control Optimization control of large-scale network systems Complex logistic systems

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