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Molten salts-modified MgO-based adsorbents for intermediate-temperature CO_2 capture: A review

Journal of Energy Chemistry 2017年第5期26卷 830-838页

作者： Wanlin Gao Tuantuan Zhou Yanshan Gao Benoit Louis Dermot O'Hare Qiang Wang College of Environmental Science and Engineering Beijing Forestry University， Beijing 100083 China Laboratoire de Synthese Reactivite Organiques et Catalyse Institut de Chimie UMR 7177 Universite de Strasbourg1 rue Blaise Pascal 67000 StrasbourgFrance Chemistry Research Laboratory Department of Chemistry University of Oxford Mansﬁeld Road Oxford OX1 3TA United Kingdom

Carbon dioxide（CO2） capture using magnesium oxide（MgO）-based adsorbents at intermediate temperatures has been regarded as a very prospective technology for their relatively high adsorption capacity,low cost, and wide availability. During the past few years, great effort has been devoted to the fabrication of molten salts-modified MgO-based adsorbents. The extraordinary progress achieved by coating with molten salts greatly promotes the COcapture capacity of MgO-based adsorbents. Therefore, we feel it necessary to deliver a timely review on this type of COcapturing materials, which will benefit the researchers working in both academic and industrial areas. In this work, we classified the molten saltsmodified MgO adsorbents into four categories:（1） homogenous molten salt-modified MgO adsorbents,（2） molten salt-modified double salts-based MgO adsorbents,（3） mixed molten salts-modified MgO adsorbents, and（4） molten salts-modified MgO-based mixed oxides adsorbents. This contribution critically reviews the recent developments in the synthetic method, adsorption capacity, reaction kinetics, promotion mechanism, operational conditions and regenerability of the molten salts-modified MgO COadsorbents. The challenges and prospects in this promising field of molten salts-modified MgO COadsorbents in real applications are also briefly mentioned.

关键词： Global warming Magnesium oxide CO2 adsorption Molten salts Intermediate temperatures

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On the risks associated with wear quantification using profilometers equipped with skid tracers

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Friction 2016年第1期4卷 84-88页

作者： M.BELLANTONIO TRIBOtechnic 4 Rue Valiton Clichy 92110 France

In this study a wear track was generated on aluminium by rubbing it against a hard steel ball. The generated wear track has a typical depth of 50 [mu]m and exhibits marked ridges on its borders. The cross section profiles were measured using two different stylus profilometers equipped either with skidless or skid probes and compared to a skidless reference instrument. It was found that the use of a skid probe can introduce significant distortion of the measured wear track profiles and thus errors in wear quantification. The reason for that is attributed to the presence of the ridges that, by elevating the skid, alter artificially the reference height used for profile measurement.

关键词： profilometer wear track volume skidless profilometer wear measurement skidless tracer skid tracer

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Mass excess of ^(69)Br and the rp process

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Chinese Physics C 2015年第9期39卷 55-57页

作者： M.S.Antony J.-B.Bueb Résidence Einstein 11 rue de Klingenthal

The proton separation energy Sp of -786.07±11.49 keV has been evaluated for 69Br from a least squares fit of mass difference of analog states versus α/A1/3, where a is the average charge of the mirror nuclei and A is the mass number. The extracted Sp value is indicative of the rapid proton-capture process rp, and subsequent Type I X-ray bursts.

关键词： proton separation energy rapid proton-capture type I X-ray bursts analog levels

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Modelling of Electrical Conductivity of a Silver Plasma at Low Temperature

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Plasma Science and Technology 2016年第8期18卷 812-820页

作者： pascal ANDRE William BUSSIERE Alain COULBOIS Jean-Louis GELET David ROCHETTE Université Clermont Auvergne LAEPT MERSEN 15 rue Jacques de Vaucanson

During the working of electrical fuses, inside the fuse element the silver ribbon first begins to melt, to vaporize and then a fuse arc appears between the two separated parts of the element. Second, the electrodes are struck and the burn-back phenomenon takes place. Usually, the silver ribbon is enclosed inside a cavity filled with silica sand. During the vaporization of the fuse element, one can consider that the volume is fixed so that the pressure increase appears to reach pressures higher than atmospheric pressure. Thus, in this paper two pressures, 1 atm and 10 atm, are considered. The electrical field inside the plasma can reach high values since the distance between the cathode surface and the anode surface varies with time. That is to say from zero cm to one cm order. So we consider various electrical fields： 102 V/m, 103 V/m, 5×103 V/m, 104 V/m at atmospheric pressure and 105 V/m at a pressure of 10 atm. This study is made in heavy species temperature range from 2,400 K to 10,000 K. To study the plasma created inside the electric fuse, we first need to determine some characteristics in order to justify some hypotheses. That is to say： are the classical approximations of the thermal plasmas physics justified？ In other words： plasma frequency, the ideality of the plasma, the Debye-Hückel approximation and the drift velocity versus thermal velocity. These characteristics and assumptions are discussed and commented on in this paper. Then, an evaluation of non-thermal equilibrium versus considered electrical fields is given. Finally, considering the high mobility of electrons, we evaluate the electrical conductivities.

关键词： electrical conductivity silver fuses non-ideal plasma Debye-Hiickelapproximation drift velocity thermal velocity thermal non-equilibrium electrical fields

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Phenomenological behavior of rock salt:On the influence of laboratory conditions on the dilatancy onset

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Journal of Rock Mechanics and Geotechnical Engineering 2019年第4期11卷 723-738页

作者： A.Rouabhi P.Labaune M.Tijani N.Gatelier G.Hevin MINES ParisTech PSL Research UniversityCentre de Geosciences35 rue St HonoreFontainebleau77300France Geostock Entrepose 2 rue des MartinetsRueil-Malmaison92500France Storengy 12 rue Raoul NordlingBois-Colombes92274France

Recently,stress-based dilatancy criteria have become essential tools to design underground facilities in salt formations such as gas storage ***,these criteria can depend critically on the volumetric strain measurements used to deduce the dilatancy *** from conventional triaxial compression tests can show different volumetric behavior depending on the loading conditions,as well as on the measurement *** order to obtain a quantitative understanding of this problem,an experimental program was carried out and the testing procedure was investigated numerically under homogeneous and heterogeneous stress *** experimental results showed that the deviatoric stress corresponding to the dilatancy onset was significantly dependent on the measurement *** a heterogeneous stress state,the simulation results revealed that the strain measurements at different scales (referred to as local,hybrid or global) can provide different volumetric results with moderate to significant deviations from the idealized behavior,and hence different onsets of *** also proved that,under low confinement,tensile stresses can take place within the compressed specimen,leading to a great deviation of the dilatancy onset from the idealized *** both experimental and numerical investigations,the difference in sensitivity to the measurement techniques between the deviatoric and the volumetric behaviors is explained by the relatively small values of the volumetric *** non-ideal laboratory conditions have more impact on this strain than on the deviatoric *** findings can have implications for the interpretation of the dilatancy behavior of rock salt,and hence on the geomechanical design aspects in salt formations.

关键词： Rock salt Triaxial tests Dilatancy onset End restraint Viscoplasticity

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Potential of silicon carbide MOSFETs in the DC/DC converters for future HVDC offshore wind farms

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High Voltage 2017年第4期2卷 233-243页

作者： Thomas Lagier Philippe Ladoux Piotr Dworakowski SuperGrid Institute 130rue Léon BlumVilleurbanneFrance LAPLACE Universitéde ToulouseCNRSINPTUPS2 rue Charles CamichelToulouseFrance Thomas

High-voltage direct current(HVDC)is more and more often implemented for long distance electrical energy transmission,especially for off-shore wind *** this study,a full DC off-shore wind farm,which requires a high-power and high-voltage DC/DC converter,is *** order to reduce the size of the converter,the trend is to increase operating *** carbide(SiC)metal–oxide–semiconductor field-effect transistors(MOSFETs)are becoming industrially available and give scope for the realisation of high-performance DC/DC converters based on modular *** study presents a prospective analysis of the potential of such devices in HVDC power *** the characteristics of Si insulated-gate bipolar transistor and SiC MOSFET power modules,two DC/DC converter topologies are compared in terms of losses and number of *** conclusion,a study of the efficiency based on converter energy loss is presented.

关键词： MOSFETs converter bipolar

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SECURE USER'S MOBILITY:THE CURRENT SITUATION

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China Communications 2007年第1期4卷 95-104页

作者： M.Komarova M.Riguidel ENST 46 rue BarraultParis 13France

This paper describes the current situation concerning security in an IP mobile *** focuses on the problem of inter-domain WLAN roaming. Interoperability and adaptability issues are introduced when a mobile node roams across networks with different *** possibility of implementing different authentication schemes for handover operations in terms of quality of service (QoS) and security requirements is *** affecting handover latency and packet loss are *** are numerous fast handover solutions for intra-domain *** possibility of their implementation for global roaming is studied.

关键词： wireless LAN handover security mobility management

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XDEM multi-physics and multi-scale simulation technology: Review of DEM-CFD coupling, methodology and engineering applications

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Particuology 2019年第3期17卷 176-193页

作者： Bernhard Peters Maryam Baniasadi Mehdi Baniasadi Xavier Besseron Alvaro Estupinan Donoso Mohammad Mohseni Gabriele Pozzetti Universite du Luxembourg 6. rue Coudenhove-Kalergi L-1359 Luxembourg

The extended discrete element method (XDEM) multi-physics and multi-scale simulation platform is being developed at the Institute of Computational Engineering, the University of Luxembourg. The platform is an advanced multi-physics simulation technology that combines flexibility and versatility to establish the next generation of multi-physics and multi-scale simulation tools. For this purpose, the simulation framework relies on coupling various predictive tools based on an Eulerian and Lagrangian approach. The Euleria n approach represents the wide field of con tinuum models;the Lagra ngian approach is perfect for characterising discrete phases. Continuum models thus include classical simulation tools, such as computational fluid dynamics simulation and finite element analysis, while an extended configuration of the classical discrete element method addresses the discrete (e.g., particulate) phase. Apart from predicting the trajectories of in dividual particles, XDEM-suite extends the application of the XDEM to estimating the thermodynamic state of each particle using advanced and optimised algorithms. The thermodynamic state may include temperature and species distributions due to chemical reaction and external heat sources. Hence, coupling these extended features with either computational fluid dynamics simulation or finite element analysis opens a wide range of applications as diverse as pharmaceuticals, agriculture, food processing, mining, construction and agricultural machinery, metals manufacturing, energy production and systems biology.

关键词： Multi-phase modelling Coupled computational fluid dynamics-discrete element method

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An integrated hard- and soft-ware triboelectrochemical test rig for tribocorrosion experiments

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Friction 2015年第3期3卷 256-258页

作者： Marc BELLANTONIO TRIBOtechnic 4 rue ValitonF-92110 ClichyFrance

Tribocorrosion is a degradation mechanism resulting from the interaction of mechanical(wear)and chemical(corrosion)*** interaction leads to surface damage that does not correspond to the simple sum of wear and corrosion taken *** tribocorrosion of material pairings thus requires the capability not only to control the mechanical and chemical test parameters but also to identify the relative contribution of corrosion and wear in the overall material *** paper describes a novel laboratory tribocorrosion test set-up combining in one experiment the control of mechanical input(load,velocity,and frequency)and output(friction and wear)parameters as well as the control of corrosion phenomena through a series of dedicated electrochemical methods(open circuit,potentiostatic and potentiodynamic measurements).The possibilities offered by this set-up are illustrated by selected case studies.

关键词： tribocorrosion friction and corrosion tribotechnic

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GeSnOI mid-infrared laser technology

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Light(Science & Applications) 2021年第12期10卷 2408-2420页

作者： Binbin Wang Emilie Sakat Etienne Herth Maksym Gromovyi Andjelika Bjelajac Julien Chaste Gilles Patriarche Philippe Boucaud Frédéric Boeuf Nicolas Pauc Vincent Calvo Jérémie Chrétien Marvin Frauenrath Alexei Chelnokov Vincent Reboud Jean-Michel Hartmann Moustafa El Kurdi UniversitéParis-Saclay CNRSC2N10 boulevard Thomas Gobert91120 PalaiseauFrance UniversitéCôte d’Azur CNRSCRHEARue Bernard Grégory06905 Sophia-AntipolisFrance STMicroelectronics Rue Jean Monnet38054 CrollesFrance UniversitéGrenoble Alpes CEAIRIG-DePhy17 rue des Martyrs38000 GrenobleFrance UniversitéGrenoble Alpes CEALeti17 rue des Martyrs38000 GrenobleFrance

GeSn alloys are promising materials for CMOS-compatible mid-infrared lasers ***,Sn alloying and tensile strain can transform them into direct bandgap *** growing laser technology however suffers from a number of limitations,such as poor optical confinement,lack of strain,thermal,and defects management,all of which are poorly discussed in the ***,a specific GeSn-on-insulator(GeSnOI)stack using stressor layers as dielectric optical claddings is demonstrated to be suitable for a monolithically integration of planar Group-IV semiconductor lasers on a versatile photonic platform for the near-and mid-infrared spectral ***-shape resonators on mesa structures were fabricated from GeSnOI,after bonding a Ge_(0.9)Sn_(0.1) alloy layer grown on a Ge strain-relaxed-buffer,itself on a Si(001)*** GeSnOI microdisk mesas exhibited significantly improved optical gain as compared to that of conventional suspended microdisk resonators formed from the as-grown *** further show enhanced vertical out-coupling of the disk whispering gallery mode in-plane radiation,with up to 30%vertical out-coupling *** a result,the GeSnOI approach can be a valuable asset in the development of silicon-based mid-infrared photonics that combine integrated sources in a photonic platform with complex lightwave engineering.

关键词： GeSn OI coupling

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