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Research.progress on catalysts for organic sulfur h.drolysis: Review of activity and stability

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Ch.nese j.urnal of Ch.mical Engineering 2024年第7期71卷 203-216页

作者： Bingning Wang Xianzh. Wang song Yang Ch.o Yang h.iling Fan j. Sh.ngguan State Key Laboratory of Clean and Efficient Coal Utilization Taiyuan University of TechnologyTaiyuan 030024China Sh.nxi Engineering Center of Civil Clean Fuel Taiyuan University of TechnologyTaiyuan 030024China College of Ch.mical Engineering and Tech.ology Taiyuan University of TechnologyTaiyuan 030024China College of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China

Th. removal of organic sulfur th.ough.catalytic h.drolysis is a significant area of research.in th. field of *** review provides an overview of recent advancements in catalytic h.drolysis tech.ology of organic sulfur,including th. activity,stability,and atmosph.re effects of h.drolysis *** emph.sis is on strategies for enh.ncing h.drolysis activity and anti-oxygen poisoning property of *** modification,metal doping and nitrogen doping h.ve been found to improve th. activity of *** components modification is th. most commonly used meth.d,th. formation of oxygen vacancies th.ough.metal doping and creation of nitrogen basic sites th.ough.nitrogen doping also contribute to th. h.drolysis of organic *** strategies for anti-oxygen poisoning are discussed in a systematic *** structural regulation of catalysts is beneficial for th. desorption and diffusion of h.drogen sulfide(h.(2)S),th.reby effectively inh.biting its *** doping and th. addition of electronic promoters such.as transition metals can protect active sites and decrease th. number of active oxygen *** meth.ds h.ve been proven to enh.nce th. anti-poisoning performance of ***,th.s article summarizes h.w different atmosph.res affect th. activity of h.drolysis *** obj.ctive of th.s review is to pave th. way for th. development of efficient,stable and widely used catalysts for organic sulfur h.drolysis.

关键词： Organic sulfur h.drolysis Catalysts Activity Stability

CO2-Induced Modulation of Si-O Bonds for Low Temperature Plastic Deformation of Amorph.us Silica Nanoparticles with.Enh.nced Ph.toluminescence

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Energy & Environmental Materials 2024年第4期7卷 404-412页

作者： Kang h.ang Wenzh.o Wu song Xu Pengfei Yan Zh.ngming Wei Qun Xu h.nan Institute of Advanced Tech.ology Zhengzhou University College of Materials Science and Engineering Zhengzhou University State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences

Modulation of Si-O bonds under mild conditions h.s been a ch.llenging issue in th. field of material science,wh.ch.is critical to manufacture h.gh.erformance silica-based optical and ph.tonic ***,we introduce a nondestructive tech.ique to ach.eve Si-O bond rearrangement,leading to plastic deformation and ph.toluminescence enh.ncement of amorph.us silica nanoparticles using supercritical carbon dioxides in EtOh.h.O solution under mild temperature.

关键词： amorph.us silica anisotropic stress ph.toluminescence plastic deformation supercritical CO2

Experimental and numerical study on ignition and combustion ch.racteristics of boron-magnesium composite powders

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Particuology 2024年第1期84卷 12-29页

作者： Sh.yuan Liu Luyang h.n h.ngmei Liu Yingkai song Linlin Liu songqi h. Science and Tech.ology on Combustion Internal Flow and Thermo-Structure LaboratoryNorthwestern Polytechnical UniversityXi'an710072China Sch.ol of Mech.nical Engineering and Rail Transit Changzhou UniversityChangzhou213164China Sh.ngh.i Institute of Space Propulsion Shanghai201112China Sh.ngh.i Engineering Research.Center of Space Engine Shanghai201112China

A h.gh.pressure laser ignition and combustion system with.adj.stable oxidizer gas atmosph.re is establish.d to investigate th. ignition and combustion ch.racteristics of boron-magnesium(BM)com-posite *** ignition and combustion model of BM powders is establish.d and validated in th. present *** results sh.w th.t increasing water content,O_(2) content and Mg content all result in sh.rter ignition delay time of BM powders,among wh.ch.th. effect of water content is th. most ***,ignition delay time increases as pressure *** combustion time decreases with.increasing Mg content and ambient pressure but increases with.water *** th. increase of O_(2) content,combustion time of BM powders first increases and th.n decreases,wh.ch.means a critical O_(2) content exists above wh.ch.combustion time *** results sh.w th.t th.re exists a trade-off between ignition and combustion performance of BM composite powders.

关键词： Boron magnesium powder Laser ignition Ignition and combustion model Reaction mech.nism Numerical model

S-sch.me regulated Ni_(2)P-NiS/twinned Mn_(0.5)Cd_(0.5)S h.tero-h.moj.nctions for efficient ph.tocatalytic h.(2)evolution

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j.urnal of Materials Science & Tech.ology 2024年第2期169卷 148-157页

作者： Qiqi Zh.ng Zh.n Wang Yuh.ng song j.n Fan Tao Sun Enzh.u Liu Sch.ol of Ch.mical Engineering/Xi’an Key Laboratory of Special Energy Materials Northwest UniversityXi’an 710069China

Effective bulk ph.se and surface ch.rge separation is critical for ch.rge utilization during th. ph.to-catalytic energy conversion *** th.s work,th. ternary Ni_(2)P-NiS/twinned Mn_(0.5)Cd_(0.5)S(T-MCS)nanoh.brids were successfully constructed via combining Ni_(2)P-NiS with.T-MCS solid solution for visible ligh. ph.tocatalytic h.(2)evolution.T-MCS is composed of zinc blende Mn_(0.5)Cd_(0.5)S(ZB-MCS)and wurtzite Mn_(0.5)Cd_(0.5)S(WZ-MCS)and th.se two alternatively arranged crystal ph.ses endow T-MCS with.excellent bulk ph.se ch.rge separation performance for th. sligh. energy level difference between ZB-MCS and WZ-MCS.S-sch.me carriers transfer route between NiS and T-MCS can accelerate th. interfacial ch.rge separation and retain th. active electrons and h.les,meanwh.le,co-catalyst Ni_(2)P as electron receiver and proton reduction center can furth.r optimize th. h.(2)evolution reaction kinetics based on th. surface Sch.ttky barrier *** above-formed h.mo-h.teroj.nctions can establish.multiple ch.rge transfer ch.nnels in th. bulk ph.se of T-MCS and interface of T-MCS and Ni_(2)*** th. synergistic effect of twinned h.moj.nction,S-sch.me h.teroj.nction,and Sch.ttky barrier,th. ternary Ni_(2)P-NiS/T-MCS com-posite manifested an h.(2)production rate of 122.5 mmol h.(-1)g^(-1),wh.ch.was 1.33,1.24,and 2.58 times h.gh.r th.n th.se of th. NiS/T-MCS(92.4 mmol h.(-1)g^(-1)),Ni_(2)P/T-MCS(98.4 mmol h.(-1)g^(-1)),and T-MCS(47.5 mmol h.(-1)g^(-1)),*** work demonstrates a promising strategy to develop efficient sul-fides ph.tocatalyst toward targeted solar-driven h.(2)evolution th.ough.h.mo-h.teroj.nction engineering.

关键词： Ph.tocatalytic h.(2)evolution Twinned Mn_(0.5)Cd_(0.5)S h.moj.nction S-sch.me h.teroj.nction Sch.ttky barrier

Effect of Incoming Vortex on Secondary Flows in Turbine Cascades with.Planar and Non-Axisymmetric Endwall

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j.urnal of Th.rmal Science 2024年第1期33卷 138-157页

作者： CAO Zh.yuan WANG Ch.xuan song Zh.gao GAO Xi Zh.O Wei LIU Bo Sch.ol of Power and Energy Northwestern Polytechnical UniversityXi'an 710072China National Key Laboratory of Science and Tech.ology on Aerodynamic Design and Research Northwestern Polytechnical UniversityXi'an 710072China Institute of Engineering Th.rmoph.sics Chinese Academy of SciencesBeijing 100080China Sch.ol of Aeronautics and Astronautics University of Chinese Academy of SciencesBeijing 100080China

Non-Axisymmetric Endwall Profiling(NAEP) is commonly utilized in turbines to eliminate secondary ***,most of th. NAEP meth.ds consider a single-blade row environment with.ut incorporating th. effect of th. stage *** paper aims to investigate th. influence mech.nism of th. incoming vortex on th. endwall secondary flow structures of NAEP in a h.gh.y loaded turbine *** model th. incoming vortex in a stage environment,th.s study considers a h.lf-delta wing as th. vortex generator at th. upstream of th. turbine *** NAEP is th.n carried out for a h.gh.y loaded turbine cascade with.an in-h.use numerical optimization design platform subj.ct to no incoming *** simulation is also carried out under th. influence of th. incoming vortex for th. turbine cascades with.both.planar and non-axisymmetric *** paper furth.rs investigated th. pitch.ise effect of th. incoming vortex on th. near endwall secondary *** results indicate th.t th. NAEP effectively improves th. endwall secondary flow of th. turbine cascade,wh.re th. total pressure loss coefficient and th. secondary kinetic energy(SKE) are reduced by 7.3%,and 45.7%,*** is furth.r seen th.t with.th. incoming vortex,th. NAEP ach.eves a considerable control effect on th. endwall secondary flow of th. turbine *** incoming vortex,th. NAEP can still ach.eve considerable control effect on th. endwall secondary flow of th. turbine cascade;th. averaged reductions of loss coefficient and SKE are 7.8% and 14.2%,*** some pitch.ise locations,incoming vortex can suppress th. convection of cross-passage flow toward th. suction corner greatly and reduce th. loss coefficient of th. baseline *** incoming vortex at 4/7 pitch.impinged righ. at th. blade leading edge,leading to th. generation of low-momentum fluid,wh.ch.increased th. size and th. strength.of th. h.rsesh.e *** all th. pitch.ise locations,NAEP can suppress th. seco

关键词： non-axisymmetric endwall secondary flow incoming vortex passage vortex stage environment

A h.drodynamic modelling of wave-activated bodies for wavelet marine regions

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Clean Energy 2024年第2期8卷 35-47页

作者： j.S.Peh.Moh.mmed W.Muh.eldeen N.h.Sh.aib Mech.nical Engineering Department Faculty of EngineeringTechnology&Built EnvironmentUCSI UniversityKuala Lumpur56000Malaysia MTC Engineer Sdn.Bh. Shah AlamSelangorMalaysia

Recently,most wave energy research.h.s targeted sea areas with.h.gh.power density under extreme wave conditions for *** trend often leads to h.gh.r energy costs for wave power ***,many marine areas with.low power density,ch.racterized by wavelet conditions and less destructive forces th.n extreme wave conditions,remain ***,th.s study aimed to propose a wave-activated body model for sea regions with.wavelet *** wave-activated body design process encompassed site selection,parameter determination,geometry design,comparison and performance evaluation using th. ANSYS®AQWA *** results indicated th.t th. proposed device ach.eved th. desired h.ave motion,with.an amplitude range of 1.2 to-2.5 m,validating its potential for deployment in marine regions with.wavelet ***,wh.le th. proposed design is optimized for wavelet conditions,it was found to h.ve potential limitations in extreme wave *** observation emph.sizes th. ch.llenge of formulating a generalized design suitable for both.***,it is pivotal for wave-activated body designs to be customized based on th. specific ocean conditions th.y target,underscoring th. need for specialized designs of wave energy converters th.t consider th. unique wave ch.racteristics of th.ir deployment sites.

关键词： wave energy converter South.Ch.na sea renewable and sustainable energy wavelet ANSYS AQWA h.drodynamic wave-activated bodies

Effects of low molecular weigh. polysacch.ride from Sargassum th.nbergii against palmitic acid-induced intracellular lipid accumulation in 3T3-L1 adipocyte and h.pG2 cells

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Food Science and h.man Wellness 2024年第4期13卷 2244-2252页

作者： h.o-Geun Lee D.P.Nagah.watta M.j.M.S.Kurera Kyung-Mo song Yun-Sang Ch.i You-j.n j.on Min-Ch.ol Kang Department of Marine Life Sciences Jeju National UniversityJeju 63243Republic of Korea Department of Biotech.ology Faculty of Agriculture and Plantation ManagementWayamba University of Sri LankaMakanduraGonawila(NWP)60170Sri Lanka Research.Group of Food Processing Korea Food Research Institute245Wanju 55365Republic of Korea

Low molecular weigh. polysacch.rides can be isolated from Sargassum th.nbergii(LMPST)and in vitro experiments were conducted to evaluate th. inh.bitory effects on *** natures of LMPST were attained from *** and appraised th.ir LMPST on palmitic acid(PA)induced lipid accretion in h.p G2,and 3T3-L1 *** treatment lessened lipid deposition and intracellular free fatty acid and triglyceride intensities in PA-treated above mentioned *** mech.nistic study publicized th.t LMPST2 significantly suppressed adipogenesis and stimulated th. PA-treated 3T3-L1 cells occupied in th. lipolysis ***,in PA-treated h.p G2 cells,th. free fatty acid oxidation was significantly increased by *** th.se constructive properties of LMPST2 from ***,is a potential candidate for diminish.ng th. intracellular lipids,and for a th.rapeutic agent in th.se conditions.

关键词： Sargassum th.nbergii Low molecular weigh. polysacch.ride Lipid accumulation Obesity Liver steatosis

Enantioselective Alkylation of Aldeh.des with.Organoborons Enabled by Nickel/N-h.terocyclic Carbene Catalysis

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Ch.nese j.urnal of Ch.mistry 2024年第18期42卷 2161-2165页

作者： song-Yang Liu Zi-Ch.o Wang Sh.-Liang Sh. College of Ch.mistry and Material Science Shanghai Normal University100 Guilin RoadShanghai 200234China State Key Laboratory of Organometallic Ch.mistry Shanghai Institute of rganic ChemitryUniversity of Chinee Academy of Scienc Chinese Academy of Sciences345 Lingling RoadShanghai 200032China

Transition-metal-catalyzed asymmetric alkylation of aldeh.des represents a straigh.forward strategy for th. synth.sis of ch.ral secondary ***,efficient meth.ds using organoborons as coupling reagents are ***,we report a h.gh.y enantioselective nickel-catalyzed alkylation reaction of aldeh.des,using readily available alkylborons as nucleoph.les.A wide variety of ch.ral secondary alcoh.ls were prepared from commercially available aldeh.des with.h.gh.*** key to th. excellent enantioselectivity and ch.moselectivity was th. employment of a bulky C2-symmetric ch.ral Nh. *** protocol features excellent enantiocontrol,mild conditions,and good functional group compatibility.

关键词： Enantioselective alkylation Nickel catalysis N-h.terocyclic carbene Organoborons Ch.ral alcoh.ls Asymmetric catalysis C-C coupling Synth.tic meth.ds

A vectorial model for th. nonlinear gradient force exerted on metallic Rayleigh.nanoparticles

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Ch.nese Optics Letters 2024年第2期22卷 207-213页

作者：朱政张聿全闵长俊 Aurèle j.LAdam h.Paul Urbach.袁小聪 Research.Center for h.manoid Sensing Research Institute of Intelligent SensingZhejiang LabHangzhou 311100China Nanoph.tonics Research.Center Institute of Microscale Optoelectronics&State Key Laboratory of Radio Frequency Heterogeneous IntegrationShenzhen UniversityShenzhen 518060China Optics Research.Group ImPhys DepartmentFaculty of Applied SciencesDelft University of TechnologyDelft 2628 CJThe Netherlands

Optical tweezers h.ve proved to be a powerful tool with.a wide range of *** gradient force plays a vital role in th. stable optical trapping of *** scalar meth.d is convenient and effective for analyzing th. gradient force in traditional optical ***,wh.n th. th.rd-order nonlinear effect of th. nano-obj.ct is stimulated,th. scalar meth.d cannot adequately present th. optical response of th. metal nanoparticle to th. external optical ***,we propose a th.oretical model to interpret th. nonlinear gradient force using th. vector *** combining th. optical Kerr effect,th. polarizability vector of th. metallic nanoparticle is derived.A quantitative analysis is obtained for th. gradient force as well as for th. optical potential *** vector meth.d yields better agreement with.reported experimental *** suggest th.t th.s meth.d could lead to a deeper understanding of th. ph.sics relevant to nonlinear optical trapping and binding ph.nomena.

关键词： gradient forces nonlinear effect metallic nanoparticles