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颗粒学报（英文版）
颗粒学报（英文版）

郭慕孙

双月刊

1674-2001

jcsp@home.ipe.ac.cn

010-82629146

100080

北京中关村北二条1号中科院过程所内

颗粒学报（英文版）/Journal China ParticuologyCSCDCSTPCD北大核心EISCI
查看更多>>本刊以创精品与国际化为办刊方针，旨在反映中国颗粒学研究的最新成果、及时追踪国际颗粒学领域的最新动态。学报主要刊登国内外颗粒学领域中的研究、工程和应用方面的优秀原始论文，包括颗粒测试与表征、颗粒制备与处理、流态化、气溶胶和超微颗粒等。本刊不仅设有论坛、研究论文、研究简报等内容，还有书评、会议信息与报道、测试仪器进展等栏目，便于相关人士进行学术交流，并为科技成果的展示提供平台，信息十分丰富。本刊已陆续被美国化学文摘（CA），俄罗斯文摘杂志（AJ），剑桥科学文摘（CSA）以及中国科技论文与引文数据库(CSTPCD)收录。China PARTICUOLOGY, a bimonthly interdisciplinary journal in English, purports to present the best papers in research, engineering and application in the overall field of PARTICUOLOGY, including particle characterization, particle preparation, aerosol, fluidization and ultra-fine particles. The word PARTICUOLOGY was coined to correspond to its Chinese terminology, which denotes both the science and technology of particles. Although the journal is China-based, it serves as a medium for all accepted papers of international origin, especially the best papers representing current advances in the world. Besides scientific and engineering papers, the journal includes the following sections: R & D notes, Current events, Editorials reviews, Forum for comments, opinions and qualified speculations, News on books, instruments and meetings.Now， China Particuology has been indexed by CA, AJ , CSA and CSTPCD.??读者对象（Audiences）： 中国颗粒学会会员、国内外从事颗粒学和颗粒技术研究和生产的大专院校师生、科研院所及企业的研究人员和技术人员。 Member of Chinese Society of Particuology, and researchers or experts who are engaged in the study of particle sciences and technology coming from colleges, institutes and corporations all over the world.
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    Atmospheric iron deposition in a megacity of northwest China:Solubility,speciation,and deposition fluxes

    Xiaotao YangPingping LiuZhiwei XueHao Zhang...
    383-393页
    查看更多>>摘要：Atmospheric iron has crucial effects on biogeochemical cycles,atmospheric processing,global climate,and human health.In this study,atmospheric dustfall samples were collected from six functional areas in Xi'an,China,from 2020 to 2021.The spatiotemporal distributions and deposition fluxes of total and water-soluble(ws)Fe as well as the speciation and potential sources of ws-Fe were characterized.In-dustrial areas had the highest concentrations of total Fe and ws-Fe,which were mainly due to copious emissions of heavy metals during manufacturing.The total Fe concentrations peaked in spring,primarily due to the substantial input of crustal dust,which also led to the lowest Fe solubility in this season.By contrast,the highest levels of ws-Fe occurred during winter due to an increase in biomass combustion.Among the water-soluble forms,ws-Fe(Ⅱ)was dominant and accounted for 74.8％of the total amount of ws-Fe.Crustal dust was the main contributor to total Fe,whereas biomass burning primarily contributed to peak ws-Fe concentrations.The average total and ws-Fe deposition fluxes in Xi'an were the highest in spring and lowest in autumn,which were related to the distributions of the dustfall deposition fluxes and their Fe contents during these periods.Our study provided a broader and comprehensive understanding of atmospheric iron deposition in Chinese urban area,which is of positive significance for understanding atmospheric chemistry and global climate change.
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    Heat transfer analysis in particle-laden flows using the immersed boundary method

    Ali Abbas Zaidi
    394-403页
    查看更多>>摘要：This paper investigates an efficient immersed boundary method(IBM)for multiple-core CPU machines with local grid refinement for the calculation of heat transfer between fluids and finite-sized particles.The fluid momentum equations are solved by using the fractional step method,while the energy equation is solved by employing the second-order Adams-Bashforth method.For efficient load balancing between the CPU cores,the coupling between particles and fluid is obtained by applying the body force in the fluid equations,which depends on the solid volume fraction of particles contained in each grid cell,and then by linearly interpolating the particle temperature and velocity on the fluid grid cell(in place of the delta function commonly used in literature).Several test cases from the literature are studied,and good agreement is observed between the simulation results and the literature.Finally,a scaling study on multiple core machines is performed,demonstrating the proposed IBM's capabilities for a significant reduction in processing time.
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    Numerical investigation of transient gas-solid heat transfer in a packed bed:Impact of intra-particle thermal diffusion

    Hanqiao CheYuanhe YueZhaohua JiangDuan Li...
    404-411页
    查看更多>>摘要：The transient heat transfer behaviours in a packed bed have been studied using coupled computational fluid dynamics(CFD)and discrete element method(DEM).Intra-particle thermal diffusion,which is a crucial but rarely explored issue,is considered by introducing a one-dimensional diffusion equation in the DEM solver.To achieve a sufficiently long physical time of simulations,we further reduce the computational cost by applying periodic boundary condition to a small segment of the packed bed.Our study demonstrates a shifting peak heat flow rate from the bottom to the top of the packed bed during the initial warming phase.We affirm that the influence of thermal diffusion within a particle is note-worthy only for particles exhibiting a high Biot number(e.g.,Bi=1.2).This insight enriches our un-derstanding of heat transfer mechanisms in packed beds and their practical engineering applications.
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    Analysis of synthetic parameters for coating aluminum powders with phenyltriethoxysilane coupling agent and their effects on powder flow behavior

    Lillian M.MawbyBellamarie LudwigBenjamin J.Lear
    412-417页
    查看更多>>摘要：Though silanization of aluminum powder is currently used to improve its flow properties,for use as an alternative fuel source,there are a wide range of experimental parameters for the process and not all of them have been thoroughly explored.Until this is complete,it is unknown if the process is optimized in terms of time,efficiency,and effect.Herein,we report on a study into the effects of changes in humidity,degree of agitation,reaction temperature,and curing time upon the deposition of phenyl triethoxysilane into 20 μm(d50)aluminum particles.We confirm the deposition of the coating via diffuse reflectance infrared spectroscopy and x-ray photoelectron spectroscopy.We then characterize the coated particles using apparent density measurements and Carney flow methods.Using analysis of variance,we find that,of the parameters explored,only changes in cure time and reaction temperature provide meaningful changes to the apparent density,while none of our parameters produced statistically significant changes in Carney flow values.Thus,we conclude that,when optimizing silanization of aluminum particles,environmental control of humidity is unneeded and that the reaction can be run with minimal agitation.The ability to largely ignore these parameters is a benefit to large-scale processing.
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    Mn-doped LiFePO4@C as a high-performance cathode material for lithium-ion batteries

    Wenjing ChenFangxiang SongYumei YangQianlin Chen...
    418-428页
    查看更多>>摘要：In this work,LiFe1-xMnxPO4@C(x=0,0.01,0.02,0.03)cathode materials were obtained by a simple co-precipitation method and heat treatment,and the influence of Mn-doped modification on the electro-chemical performance of LiFePO4@C cathode materials was investigated.Results show that by doping an appropriate amount of Mn,the cell volume became larger,and the electronic conductivity increased,which improved the Li+diffusion rate and thus its rate capability and cycle performance of Li-ion bat-teries.Among them,LiFe0.98Mn0.02PO4@C showed superior lithium storage capability;the discharge capacity can reach 150.7 mAh g-1 at 0.1 C.The cell could discharge up to 155.9 mAh g-1 at 1 C under high temperature at 45 ℃,which was higher than LiFePO4@C(142 mAh g-1)under the same test conditions.The discharge capacity of 1 C at room temperature was 139.9 mAh g-1,and the cycle stability was 95.9％after 200 cycles.It showed that it had good rate capability and excellent cycle performance.These results indicate that Mn-doped LFP is a simple and effective strategy for developing high-performance cathode materials.
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    Innovative construction of macroporous-mesoporous structured spherical alumina and its hydrothermal stability

    Yufan MoChunli LiHuiyu LiWei Han...
    429-435页
    查看更多>>摘要：The pore structure of spherical alumina supports is closely related to the dispersion of catalytically active components and the diffusion of reactants.Maintaining excellent pore structure under strict reaction conditions is of utmost importance.In this work,spherical γ-Al2O3 support with a bimodal pore structure,composed of macropores and mesopores,was successfully synthesized using dodecane as the pore-forming agent through the oil-ammonia column-shaping method.The morphology and internal pore structure of the alumina were found to be influenced by the amount of surfactant added and ul-trasound treatment conditions.Notably,when concentration of surfactant was 4‰ and ultrasound voltage of 20 V was applied,the resulting γ-Al2O3-4‰-20 displayed a highly concentrated distribution of macropores with an average pore size of 100 nm,resulting in an impressive porosity of 69.21％.In contrast,the untreated sample of γ-Al2O3-0-0 only exhibited a mesoporous distribution with a porosity of 54.03％.Moreover,after being subjected to a hydrothermal treatment in a high temperature(600 ℃)and high humidity(water vapor)environment for 120 h,the y-Al2O3-4‰-20 sample maintained a high BET specific surface area of 170.9 m2 g-1 and mercury intrusion porosimetry specific surface area of 263.3 m2 g-1.
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    A combined experimental and DEM investigation of grain interlocking in sheared granular assemblies

    Rui LuQiang LuoTengfei WangDavid P.Connolly...
    436-451页
    查看更多>>摘要：Compacted granular material,integral to geotechnical engineering,undergoes translation,rotation,and interlocking when subject to shear displacements or external loads.The present study focuses on the interlocking of heterogeneous granular materials,a complex behavior influenced by gradation,compaction,and varying particle geometry,and has consequently received limited attention in existing research.To address this research gap,we conducted an analysis on the effect of grain interlocking on the shear resistance of granular assemblies,using a combination of laboratory testing and the discrete element method(DEM).Initially,large-scale direct shear tests were conducted on gravel-sand mixes with varying degrees of compaction and normal pressure.One of the mixes also underwent subsequent shear reversal to explore the differences in grain interlocking between the two shearing processes on the shear plane.After analyzing the laboratory results,a mesoscopic scale investigation was performed by replicating the test using discrete element simulations.To facilitate this,granular particle geometries were measured using 3D laser scanning based on the physical lab tests.Subsequently,based on these scans,discrete element R-block and ball models were utilized to construct both the coarse and fine particles within the mix.Surface vibro-compaction was employed to regulate the degree of compaction.The results indicate that an increase in vertical pressure,coupled with a zero dilatancy angle,results in a rising stress ratio,indicative of grain interlocking.This interlocking exhibits a positive correlation with both the coarse content and the degree of compaction,and varies depending on the shear displacement.As interlocking progresses,the shear band,induced by particle movement,expands and is associated with reduced particle rotation near the shear band.The study further reveals a consistent positive correlation between interlocking and the principal orientation angle of strong normal contact forces,as well as a correlation between interlocking and mobilized contacts.
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    Investigation of micro-scale shear response of sand-rubber granule mixture in terms of particle shape and grain scale deformability effects

    Abdulmuttalip AriSuat Akbulut
    452-469页
    查看更多>>摘要：In this study,the effects of particle shape of rigid sand and soft rubber materials on macro-scale shear response were reasoned based on micro-scale parameters.For this purpose,first,the shape properties of three different sand and two different rubber samples were quantified using image processing tech-niques,and the contact model parameters were calibrated through physical experiments.The direct shear test was simulated in a two-dimensional discrete element software with realistic particle forms.The soft nature of rubber particles was reflected using body-centered cubic packing with a linear-parallel bond contact model.As a result,coordination number,distribution of contact forces(i.e.,strong contact,and fabric anisotropy),and contact sliding were derived by the numerical analyses.It has been observed that the particle shape leads to distinctive micro-scale responses due to the variations in the stiffness of the contacts.
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    Highly-efficient CoRuOx nanocatalysts for acidic oxygen evolution:The merit of optimum ordering degree of carbon nanotube support

    Wenwen LiYanni WangZhenzhen ZhaoMeiqi Liu...
    470-477页
    查看更多>>摘要：Hydrogen production from proton exchange membrane water electrolysis is constrained by the sluggish kinetics of the anodic oxygen evolution reaction.RuO2 has attracted considerable attention due to its low reaction overpotential,but its inferior stability remains a major challenge.Herein,a strategy is proposed to enhance the catalytic activity and stability of CoRuOx nanoparticles by doping Co and regulating the ordering degree of carbon nanotubes(CNTs)by air annealing.It was found that the CoRuOx@CNTs-300 catalyst exhibited the best catalytic activity and stability when the annealing temperature was 300 ℃.At the current density of 10 mA cm-2,the overpotential of this catalyst was only 201 mV,which was nearly 100 mV lower than that of commercial RuO2(300 mV).Surprisingly,there was no significant increase in the overpotential when tested at a current density of 10 mA cm-2 for 50 h.The density functional theory calculations indicate that the high activity of the catalyst is due to the electronic coupling of CoRuOx nanoparticles and CNTs,and that the introduction of Co and CNTs improves the electronic structure and solvation energies of the Ru in the active site,dramatically increasing the structural stability.
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    Research progress on simulation of multiscale mass transfer processes in gas-solid system by computational mass transfer

    Xu LiYaohui WangLeifu LiRunye Zhang...
    478-492页
    查看更多>>摘要：Particle-fluid system is one of the most popular systems in chemical processes.Owing to complex interface structure and high-velocity turbulence,the momentum and mass transfer exhibit nonlinear characteristics,which pose a great challenge for further study and application.To solve this problem,computational mass transfer(CMT)emerged and has been proved to be effective in deeply exploring the mass transfer behavior of particle-fluid systems.First,this paper reviews recent gas-solid numerical studies of turbulence issues from empirical to theoretical,then discusses interphase mass transfer rate models and the interfacial interaction force.Second,the present study particularly reviews researches on mass transfer process of fixed and fluidized regime by CMT,providing reliable analysis of turbulent anisotropy diffusivity as well as multiscale structure and presenting theoretical instruction for the in-dustrial optimization of mass transfer processes in chemical engineering.
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