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light olefin production by catalytic co-cracking of Fischer–Tropsch distillate with methanol and the reaction kinetics investigation

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Chinese Journal of Chemical Engineering 2020年第1期28卷 143-151页

作者： Hui Zou Teng Pan Yanwen Shi Youwei Cheng Lijun Wang Yu Zhang Xi Li Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Institute of Zhejiang University Jiuhua Boulevard NorthQzhou 324000China Ningxia Shenyao Technology Co. Ltd.China Energy Investment Co.West Desheng Road 1Yinchuan 750200China

Catalytic co-cracking of Fischer–Tropsch(FT) light distillate and methanol combines highly endothermic olefin cracking reaction with exothermic methanol conversion over ZSM-5 catalyst to produce light olefins through a nearly thermoneutral process. The kinetic behavior of co-cracking reactions was investigated by different feed conditions: methanol feed only, olefin feed only and co-feed of methanol with olefins or F–T distillate. The results showed that methanol converted to C2–C6 olefins in first-order parallel reaction at low space time, methylation and oligomerization–cracking prevailed for the co-feed of methanol and C2–C5 olefins, while for C6–C8 olefins,monomolecular cracking was the dominant reaction whether fed alone or co-fed with methanol. For FT distillate and methanol co-feed, alkanes were almost un-reactive, C3–C5 olefins were obtained as main products, accounting for 71 wt% for all products. A comprehensive co-cracking reaction scheme was proposed and the model parameters were estimated by the nonlinear least square method. It was verified by experimental data that the kinetic model was reliable to predict major product distribution for co-cracking of FT distillate with methanol and could be used for further reactor development and process design.

关键词： Fischer–Tropsch distillate Catalytic co-cracking light olefins Methanol Reaction kinetics

light-Material Interactions Using Laser and Flash Sources for Energy Conversion and Storage Applications

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Nano-Micro Letters 2024年第12期16卷 468-514页

作者： Jung Hwan Park Srinivas Pattipaka Geon-Tae Hwang Minok Park Yu Mi Woo Young Bin Kim Han Eol Lee Chang Kyu Jeong Tiandong Zhang Yuho Min Kwi-Il Park Keon Jae Lee Jungho Ryu Department of Mechanical Engineering(Department of Aeronautics Mechanical and Electronic Convergence Engineering)Kumoh National Institute of Technology61Daehak-RoGumiGyeongbuk 39177Republic of Korea Department of Materials Science and Engineering Pukyong National University45Yongso-RoNam-GuBusan 48513Republic of Korea Energy Technologies Area Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea Division of Advanced Materials Engineering Jeonbuk National UniversityJeonju 54896JeonbukRepublic of Korea School of Electrical and Electronic Engineering Harbin University of Science and TechnologyHarbin 150080People’s Republic of China Key Laboratory of Engineering Dielectrics and Its Application Ministry of EducationHarbin University of Science and TechnologyHarbin 150080People’s Republic of China Department of Materials Science and Metallurgical Engineering Kyungpook National University80 Daehak-RoBuk-GuDaegu 41566Republic of Korea School of Materials Science and Engineering Yeungnam UniversityDaehak-RoGyeongsan-Si 38541Gyeongsangbuk-doRepublic of Korea

This review provides a comprehensive overview of the progress in light-material interactions(LMIs),focusing on lasers and flash lights for energy conversion and storage *** discuss intricate LMI parameters such as light sources,interaction time,and fluence to elucidate their importance in material *** addition,this study covers various light-induced photothermal and photochemical processes ranging from melting,crystallization,and ablation to doping and synthesis,which are essential for developing energy materials and ***,we present extensive energy conversion and storage applications demonstrated by LMI technologies,including energy harvesters,sensors,capacitors,and *** the several challenges associated with LMIs,such as complex mechanisms,and high-degrees of freedom,we believe that substantial contributions and potential for the commercialization of future energy systems can be achieved by advancing optical technologies through comprehensive academic research and multidisciplinary collaborations.

关键词： light light-material interaction Nanomaterials Energy conversion and storage devices

light-driven artificial muscles based on electrospun microfiber yarns

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Science China(Technological Sciences) 2019年第6期62卷 965-970页

作者： MENG JunXing HOU ChengYi ZHANG QingHong LI YaoGang WANG HongZhi State Key Laboratory for Modification of Chemical Fibres and Polymer Materials College of Materials Science and Engineering Donghua UniversityShanghai 201620 China Engineering Research Center of Advanced Glasses Manufacturing Technology MOEDonghua University Shanghai 201620 China

Artificial muscles are widely potential in diverse fields including medical treatment, humanoid robotics and industrial automation. Soft materials due to bio-friendly interaction are suitable for those applications. Planar and fiber shape based artificial muscles that use the polymer as substrate materials can be triggered by various stimuli like electric, moisture and heat. Here,artificial muscles based on electrospun microfiber yarns are demonstrated, which can be remotely controlled. The carbon nanotubes embedded in polyurethane microfibers enable the yarns to efficiently absorb near-infrared light and radiate heat,which induces the fast temperature change that leads to the contraction/expansion motions along the axial direction. Microfiber mats are collected by a rotating cylinder that results in highly oriented alignment. The yarns from microfiber mats are highly twisted into the coiled structure, which generates maximum contractive actuation of 6.7% at 70°C. 1000 cycles were demonstrated without an obvious decline of actuating performances. The light-driven artificial muscles can be potentially applied in wireless control, bio-medical devices and so on.

关键词： coiled fiber electrospinning artificial muscle NIR light

light-Induced Agglomeration and Diffusion of Different Particles with Optical Tweezers

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Chinese Physics Letters 2010年第9期27卷 221-224页

作者：李雪璁孙秀冬刘鸿鹏张建隆 Department of Physics Harbin Institute of Technology Harbin 150001

The dynamic process of light-induced agglomeration of carbon nanotubes （CNTs）, C60 and Escherichia coli （***） in aqueous solutions is demonstrated using an optical tweezers system. Based on the results, the diameter of the agglomerated region and the agglomeration rate increase with the increasing laser power. After the saturation-stable period, CNTs diffuse completely, C60 clusters only diffuse partially, and E. coli never diffuses in the agglomeration region. Theoretical analyses show that the molecular polarization and thermal diffusion of particles play crucial roles in the diffusion process. The and sort nanoparticles. results indicate the possibility of using light to aggregate

关键词： lighting light Processing Uses Agglomerating Diffusion

light Extraction Enhancement of GaN LED with a Two-Dimensional Photonic Crystal Slab

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Chinese Physics Letters 2011年第5期28卷 161-163页

作者： LIU Hong-Wei KAN Qiang WANG Chun-Xia HU Hai-Yang XU Xing-Sheng CHEN Hong-Da School of Electronics and Information Engineering Tianjin Polytechnic UniversityTianjin 300160 Institute of Semiconductors Chinese Academy of SciencesBeijing 100083

light extraction effects ora photonic crystal slab with a micrometer scale lattice constant are studied.A GaN light emitting diode(LED)with a photonic crystal slab is *** light extraction effects and the enhancement mechanism are *** theoretical analysis,it is found that the characteristics of LED light emission are modulated by the photonic crystal *** results show that the LED light emission intensity is enhanced by 38%due to guide mode extracting by the photonic crystal.

关键词： GaN Crystal light

light trajectory in geometrical optics and metric optics

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Science China Mathematics 1997年第7期40卷 755-760页

作者：朱莳通沈文达 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of SciencesShanghai 201800China Department of Physics Shanghai UniversityShanghai 201800China

The light trajectory in an inhomogeneous medium is studied by the variation of Lagrangians L and which correspond to Fermat’s principle in the geometrical optics and the null geodesic in the metric optics,*** relation between the metric coefficients of the three-dimensional space and of the four-dimensional space-time is *** physical meaning of the equivalence and difference of both the descriptions is *** is shown that Fermat’s principle is a direct result of the null geodesic.

关键词： light trajectory geometrical optics metric optics Fermat’s principle null geodesic.

light Regulation to Chlorophyll Synthesis and Plastid Development of the Chlorophyll-Less Golden-Leaf Privet

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Journal of Integrative Plant Biology 2010年第9期52卷 809-816页

作者： Ming Yuan Mo-Yun Xui Shu Yuan Yang-Er Chen Jun-Bo Du Fei Xu Zhong-Wei Zhang Zi-Chan Guo Zhong-Yi Zhao Hong-Hui Lin Key Laboratory for Bio-Resource and Eco-Environment M~nistry of Education School of Life Sciences Sichuan University Chengdu 610064 China College of Biology and Science Sichuan Agricultural University Ya'an 625014 China Plant Physiology Laboratory School of Life Sciences Sichuan University Chengdu 610064 China

Ligustrum vicaryi L. is a hybrid of Ligustrum ovalifolium Hassk. var. aureo-marginatum and Ligustrum vulgale L., and displays a chlorophyll-less phenotype. Therefore it is widely used as a horticultural shrub because of its golden-color leaves. Its putative mechanism, light responses, chlorophyll synthesis and plastid development were studied. L. vicaryi has a higher level of *** acid （ALA）, but lower levels of chlorophylls compared with L. quihoui. The yellowish phenotype of L. vicaryi upper leaves could be attributed to their hampered conversion from chlorophyllide into chlorophyll a. Despite the enhanced ALA level and the decreased thylakoid stacking in plastids, L. vicaryi golden leaves contain normal levels of Lhcb transcripts and photosystem apoproteins. Furthermore, reactive oxygen species （ROS） accumulation is almost the same in L. vicaryi and L. quihoui. The golden leaves often turn green and the contents of chlorophylls increase with decreasing light intensity. Dynamic changes of chlorophyll- synthesis-system under the light transition were also analyzed.

关键词： Chlorophylls Ligustrum lighting light Phenotypes Colour Plastids Leaves

light A physics in the lepton-specific two-Higgs doublet model

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Science China(Physics,Mechanics & Astronomy) 2010年第11期53卷 1981-1987页

作者： CAO JunJie 1,HENG ZhaoXia 2,3 & WAN PeiHua 1 1 College of Physics & Information Engineering,Henan Normal University,Xinxiang 453007,China 2 Key Laboratory of Frontiers in Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China 3 Kavli Institute for Theoretical Physics China,Chinese Academy of Sciences,Beijing 100190,China College of Physics & Information Engineering Henan Normal University Xinxiang China Key Laboratory of Frontiers in Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing China Kavli Institute for Theoretical Physics China Chinese Academy of Sciences Beijing China

We examine various direct and indirect constraints on the lepton-specific two-Higgs doublet model and discuss its phenomenology at colliders in the allowed parameter *** constraints we consider come from the precision electroweak data,the direct search for Higgs boson,the muon anomalous magnetic moment,as well as some theoretical consistency *** find that in the allowed parameter space the CP-odd Higgs boson A is rather light (m A < 30 GeV with 95% possibility),which is composed dominantly by the leptonic Higgs and decays dominantly into τ + τ;while the SM-like Higgs boson h (responsible largely for electroweak symmetry breaking) decays dominantly in the mode h → AA → 4τ with a large decay width,which will make the Higgs discovery more difficult at the ***,this scenario predicts rare Z decays Z → AAA and Z →τ + τA with their branching ratios ranging from 10-8 to 10-and 10-5 to 10-4 respectively,which may be accessible at the GigaZ option of the ILC.

关键词： Lepton-specific two-Higgs doublt model light Higgs boson A Z decays

light sensitizes IFNγ-mediated apoptosis of HT-29 human carcinoma cells through both death receptor and mitochondria pathways

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Cell Research 2004年第2期14卷 117-124页

作者： Man Chao ZHANG~*, Hong Peng LIU, Lisa L DEMCHIK, Yi Fan ZHAI, Da Jun YANG Division of Hematology/Oncology, Department of Internal Medicine, the University of Michigan, Ann Arbor, MI 48109-0934, USA. Division of Hematology/Oncology Department of Internal Medicine the University of Michigan Ann Arbor USA

light [homologous to lymphotoxins, shows inducible expression, and competes with herpes simplex virus glycoprotein D for herpes virus entry mediator (HVEM/TR2)] is a new member of TNF superfamily. The HT-29 colon cancer cell line is the most sensitive to light-induced, IFNγ-mediated apoptosis among the cell lines we have examined so far. Besides downregulation of Bcl-XL, upregulation of Bak, and activation of both PARP [poly (ADP-ribose) polymerase] and DFF45 (DNA fragmentation factor), light-induced, IFNγ-mediated apoptosis of HT-29 cells involves extensive caspase activation. Caspase-8 and caspase-9 activation, as shown by their cleavages appeared as early as 24 h after treatment, whereas caspase-3 and caspase-7 activation, as shown by their cleavages occurred after 72 h of light treatment. Caspase-3 inhibitor Z-DEVD-FMK (benzyloxycarbonyl-Asp-Glu-Val-Asp-fluoromethylketone) and a broad range caspase inhibitor Z-VAD-FMK (benzyloxycarbonyl-Val-Ala-Asp fluoromethylketone) were able to block light-ind

关键词： HT-29 light apoptosis Bcl-X_L caspase.