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Efficient hydrothermal deoxygenation of methyl palmitate to diesel-like hydrocarbons on carbon encapsulated Ni–Sn intermetallic compounds with methanol as hydrogen donor

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Frontiers of chemical Science and engineering 2023年第2期17卷 139-155页

作者： Haonan Shi Xiaoyu Gu Yinteng Shi Dandan Wang Sihao Shu Zhongze Wang Jixiang Chen Tianjin Key Laboratory of Applied Catalysis Science and Technology Department of Catalysis Science and EngineeringSchool of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China

Porous carbon-encapsulated Ni and Ni-Sn intermetallic compound catalysts were prepared by the one-pot extended Stöber method followed by carbonization and tested for in-situ hydrothermal deoxygenation of methyl palmitate with methanol as the hydrogen *** the catalyst preparation,Sn doping reduces the size of carbon spheres,and the formation of Ni-Sn intermetallic compounds restrain the graphitization,contributing to larger pore volume and pore ***,a more facile mass transfer occurs in carbon-encapsulated Ni-Sn intermetallic compound catalysts than in carbonencapsulated Ni *** the in-situ hydrothermal deoxygenation,the synergism between Ni and Sn favors palmitic acid hydrogenation to a highly reactive hexadecanal that easily either decarbonylate to n-pentadecane or is hydrogenated to *** high reaction temperature,hexadecanol undergoes dehydrogenation-decarbonylation,generating ***,the C-C bond hydrolysis and methanation are suppressed on Ni-Sn intermetallic compounds,favorable for increasing the carbon yield and reducing the H_(2) *** npentadecane and n-hexadecane yields reached 88.1%and 92.8%on carbon-encapsulated Ni_(3) Sn_(2) intermetallic compound at 330℃.After washing and H_(2) reduction,the carbon-encapsulated Ni_(3) Sn_(2) intermetallic compound remains stable during three recycling *** is ascribed to the carbon confinement that effectively suppresses the sintering and loss of metal particles under harsh hydrothermal conditions.

关键词： extended Stöber method carbon encapsulated Ni-Sn intermetallic compounds confinement in-situ hydrothermal deoxygenation hydrogenation decarbonylation

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Regulating local electron transfer environment of covalent triazine frameworks through F,N co-modification towards optimized oxygen reduction reaction

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Chinese chemical Letters 2025年第1期36卷 344-348页

作者： Quanyou Guo Yue Yang Tingting Hu Hongqi Chu Lijun Liao Xuepeng Wang Zhenzi Li Liping Guo Wei Zhou Shandong Provincial Key Laboratory of Molecular Engineering School of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Ji’nan 250353China

The high conductivity of electrocatalyst can eliminate the Schottky energy barrier at the interface of heterogeneous phases during an electrocatalytic reaction and accelerate the rapid electron transfer to the catalytic active ***,the electronic conductivity is a vital parameter for oxygen reduction reaction(ORR).Covalent triazine frameworks(CTFs)have shown great potential application as electrocatalysts in ORR with a merit of the diverse building ***,the intrinsic low conductivity and high impedance of CTFs could be significant setbacks in electrocatalytic ***,CTFs were constructed by introducing F and N co-modification for efficient 2e^(-)*** with the pristine CTF,the co-presence of F,N could increase the conductivity obviously by *** a result,F-N-CTF exhibits enhanced catalytic performance of H_(2)O_(2)generation and selectivity towards reaction *** work reveals the importance of conductivity optimization for CTFs and provides guidance for designing high conductivity non-metallic organic semiconductor catalysts for 2e^(-)ORR.

关键词： Covalent triazine frameworks Conductivity Co-modification Electrocatalysis Oxygen reduction reaction

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Uncovering fantastic synergistic lithium adsorption with manganese-titanium based composite nanospheres:Mild synthesis and molecular dynamics simulation insights

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Journal of Energy Chemistry 2025年第2期101卷 52-67,I0003页

作者： Yameng Wang Zi-Yu Liu Yubei Su Yu Liu Aoqun Liu Xiaoye Zhang Yugang Huang Liyun Zhang Haisheng Chen Wancheng Zhu Department of Chemical Engineering Qufu Normal UniversityQufu 273165ShandongChina Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China

In light of the burgeoning energy technology sector and the ever-growing demand for lithium across diverse industrial domains,conventional lithium extraction methods have been proven inadequate due to their limited production capacity and high operational *** work introduces a novel approach to the manganese-titanium based composite HMTO(Mn:Ti=1:4)lithium ion-sieve(LIS)nanospheres,employing lithium acetate dihydrate,manganese carbonate and titanium dioxide P25 as the primary *** nanospheres exhibit relatively uniform spherical morphology,narrow size distribution,small average particle size(ca.55 nm),large specific surface area(43.58 m^(2)g^(-1))and high surface O_(2)-content(59.01%).When utilized as the adsorbents for Li^(+)ions,the HMTO(Mn:Ti=1:4)LIS demonstrates a fast adsorption rate,approaching equilibrium within 6.0 h with an equilibrium adsorption capacity(qe)of 79.5 mg g^(-1)and a maximum adsorption capacity(qm)of 87.26 mg g^(-1)(initial concentration CO:1.8 g L^(-1)).In addition,the HMTO(Mn:Ti=1:4)also delivers a high lithium extraction from the simulated high magnesium-lithium molar ratio salt lake brine(Mg:Li=103),achieving a qeof 33.85 mg g^(-1)along with a remarkable selectivity(α_(Mg)^(Li)=2192.76).Particularly,the HMTO(Mn:Ti=1:4)LIS showcases a satisfactory recycling adsorption *** adsorption capacity remains at a high level,even that determined after the 5th cycle(55.45 mg g^(-1))surpasses that of the most recently reported ***,the fantastic synergistic lithium adsorption mechanism is deliberately uncovered by leveraging the ion exchange principles and molecular dynamics(MD)simulations.

关键词： Lithium ion-sieves Manganese titanium composite Adsorption performance lon exchange Salt lake brine lithium extraction

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Aggregation-induced Emission Probe for Fluorescence/Photoacoustic Dual-modality Imaging and Photodynamic/Photothermal Treatment

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chemical Research in Chinese Universities 2024年第2期40卷 293-304页

作者： CHEN Peiyu ZHANG Guoyang LI Jiguang MA Lijun ZHOU Jiaying ZHU Mingguang LI Shuo WANG Zhuo State Key Laboratory of Chemical Resource Engineering College of ChemistryBeijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing100029P.R.China

The combination of near-infrared(NIR)fluorescence imaging(FLI)and photoacoustic imaging(PAI)can effectively compensate for each other’s inherent limitations,which can provide reliable and rich information on tumor ***,the development of FL/PA dual-modality imaging probes is beneficial for achieving precision cancer diagnosis and ***,we designed an efficient phototherapy agent methoxy bithiophene indene(OTIC),which was based on aggregation-induced emission(AIE)active *** improve the water dispersion and enrichment of OTIC at the tumor site,OTIC nanoparticles(OTIC NPs)were prepared by a nanoprecipitation *** balance between radiation and non-radiation energy dissipation was regulated by the strong donor-acceptor interaction and intramolecular *** OTIC NPs exhibited bright NIR fluorescence,photoacoustic signals,efficient generation of reactive oxygen species,and high photothermal conversion efficiency under NIR *** imaging of the tumor and mice sentinel lymph nodes(SLNs)with OTIC NPs was visualized by NIR FL/PA dual-modal *** the comprehensive imaging information provided by OTIC NPs in vivo,tumors were ablated under laser irradiation,which greatly improved the therapeutic *** NPs would be possible to realize the precise guidance of FL/PA imaging for tumor treatment in the future clinical application.

关键词： Aggregation-induced emission Dual-modality imaging Photodynamic/photothermal treatment

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Au^(δ-)-O_(v)-Ti^(3+):Active site of MO_(x)-Au/TiO_(2) catalysts for the aerobic oxidation of 5-hydroxymethylfurfural

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Green Energy & Environment 2023年第3期8卷 785-797页

作者： Weiyao Yang Mengchen Fu Chenyu Yang Yiwen Zhang Chun Shen Beijing Key Laboratory of Bioprocess College of Life Science and TechnologyBeijing University of Chemical TechnologyNo.15 of North Three-Ring East RoadChaoyang DistrictBeijing100029China The State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing100084China

Despite wide applications of noble metal-based catalysts in 5-hydroxymethylfurfural(HMF)oxidation,promoting the catalytic performance at low loading amounts still remains a significant ***,a series of metal oxide modified MO_(x)-Au/TiO_(2)(M=Fe,Co,Ni)catalysts with low Au loading amount of 0.5 wt%were *** of transition metal oxides promotes electron transfer and generation of the Au^(δ-)-O_(v)-Ti^(3+)interface.A combination study reveals that the dual-active site(Au^(δ-)-O_(v)-Ti^(3+))governs the catalytic performance of the ratedetermining step,namely hydroxyl group ***^(δ-) site facilitates chemisorption and activation of O_(2) *** the same time,O_(v)-Ti^(3+) site acts as the role of“killing two birds with one stone”:enhancing adsorption of both reactants,accelerating the activation and dissociation of H_(2)O,and facilitating activation of the adsorbed O_(2).Besides,superoxide radicals instead of base is the active oxygen species during the rate-determining *** this basis,a FDCA yield of 71.2% was achieved under base-free conditions,complying with the“green chemistry”*** work provides a new strategy for the transition metal oxides modification of Au-based catalysts,which would be constructive for the rational design of other heterogeneous catalysts.

关键词： 5-Hydroxymethylfurfural Base-free oxidation Interfacial catalysis Active oxygen species

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High-safety and high-voltage lithium metal batteries enabled by nonflammable diluted highly concentrated electrolyte

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Nano Research 2024年第4期17卷 2638-2645页

作者： Han Zhang Ziqi Zeng Shuping Wang Yuanke Wu Changhao Li Mengchuang Liu Xinlan Wang Shijie Cheng Jia Xie State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China State Grid Anhui Electric Power Research Institute Anhui Province Key Laboratory of Electric Fire and Safety Protection(State Grid Laboratory of Fire Protection for Transmission and Distribution Facilities)Hefei 230601China School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074China

Lithium metal batteries(LMBs)show great promise for achieving energy densities over 400 Wh·kg^(-1).However,highly flammable organic electrolytes are a long-lasting problem that triggers safety hazards and hinders the commercial application of ***,a nonflammable diluted highly concentrated electrolyte(DHCE)with ethoxy(pentafluoro)cyclotriphosphazene(PFPN)as a diluent is developed to simultaneously achieve high safety and cycling stability of high-voltage *** optimal DHCE not only ensures reversible Li deposition/dissolution behavior with a superior average Coulombic efficiency(CE)over 99.1%on lithium metal anode(LMA),but also suppresses side reactions and stress crack on the LiCoO_(2)(LCO)under high cut-off *** newly developed DHCE exhibits high thermal stability,showing complete nonflammability and reduced heat generation between the electrolyte and delithiated LCO/cycled *** work offers an opportunity for rational designing nonflammable electrolytes toward high-voltage and safe LMBs.

关键词： lithium metal batteries thermal stability nonflammable electrolyte high-voltage phosphazene

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Strategies for enhancing peroxymonosulfate activation by heterogenous metal-based catalysis:A review

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Chinese Journal of chemical engineering 2022年第10期50卷 12-28页

作者： Jiahao Wei Fan Li Lina Zhou Dandan Han Junbo Gong State Key Laboratory of Chemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin Tianjin 300072China

Sulfate radical-advanced oxidation processes(SR-AOPs)are promising technologies for organic pollutants *** metal-based catalysis has been widely studied and applied to activate peroxymonosulfate(PMS)for producing sulfate *** highly efficient catalysts is crucial for future extensive ***,the catalytic activity is mainly determined by mass and electron *** paper aims to overview the recent enhancement strategies for developing heterogeneous metalbased catalysts as effective PMS *** main strategies,including surface engineering,structural engineering,electronic modulation,external energy assistance,and membrane filtration enhancement,are *** potential mechanisms for improving catalytic activity are also ***,the challenges and future research prospects of heterogenous metal-based catalysis in SR-AOPs are *** work is hoped to guide the rational design of highly efficient heterogenous catalysts in SR-AOPs.

关键词： Peroxymonosulfate Heterogeneous catalyst Sulfate radical-advancedoxidation processes(SR-AOPs) Water treatment Enhancement strategies

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Hydrothermal synthesis of high crystallinity ZSM-5 zeolite from coal gasification coarse slag and mother liquor circulation for efficient coal chemical wastewater purification

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Environmental Science and Pollution Research 2024年第25期31卷 36849-36860页

作者： Ma, Lu Li, Kangning Xiao, Yi Shi, Keren Ma, Yulin Yang, Mei Yang, Yifei Li, Yuanyuan Ma, Yulong Sun, Yonggang Ji, Wenxin State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical Engineering Ningxia University Yinchuan China

A hydrothermal synthesis method was developed to produce high crystallinity ZSM-5 zeolite using coal gasification coarse slag (CGCS) as the raw material. Instead of the expensive NaOH(s.), Na2SiO3(s.) was utilized to activate, depolymerize, and recombine Si and Al elements in the CGCS. The mother liquor circulation technology was employed to recover and reuse raw materials and residual reagents (Na2SiO3(aq.) and TPABr), reducing waste emissions and enhancing resource utilization efficiency. The synthesized ZSM-5 had a specific surface area of 455.675 m2 g−1, pore volume of 0.284 cm3 g−1, and pore diameter of 2.496 nm. The influence of various factors on the morphology and crystallinity of ZSM-5 was investigated, resulting in the production of ZSM-5 with higher specific surface area and pore volume. Adsorption experiments showed that WU-ZSM-5 exhibited a removal efficiency of 85% for ammonia nitrogen (NH4+-N(aq.)), validating its effectiveness in coal chemical wastewater purification. The mother liquor recycling technology enabled zero-emission utilization of solid waste resources and improved the utilization rate of alkali and template to 90%. These results demonstrate the potential application of the developed method in the efficient treatment of coal chemical wastewater. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Ammonia

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Electrochemical Cascade Annulation for the Synthesis of 3-Sulfanylquinoline Derivatives under Mild Conditions

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Chinese Journal of Chemistry 2024年第16期42卷 1833-1838页

作者： Ke Li Ming-Zhong Guo Zhuo Chen Hao-Ran Li Weisi Guo Ming Li Lin-Bao Zhang State Key Laboratory Base of Eco-Chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science&TechnologyQingdaoShandong 266042China

An efficient electrochemical approach has been developed for the construction of 3-sulfanylquinoline derivatives by treating phenylethynylbenzoxazinanones with disulfides in an undivided *** protocol provided a convenient route to functionalized quinolines with good functional group ***,it does not require any metal catalysts or additives,furnishing a series of biologicalquinolines inmoderatetogoodyields.

关键词： Electrocatalysis Electrooxidation Annulation 3-Sulfany quinoline C3-thioetherification

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Single-Ni-atoms on nitrogenated humic acid based porous carbon for CO_(2) electroreduction

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Frontiers of chemical Science and engineering 2024年第5期18卷 37-47页

作者： Delei Yu Ying Chen Yao Chen Xiangchun Liu Xianwen Wei Ping Cui Anhui Key Laboratory of Coal Clean Conversion&Utilization School of Chemistry and Chemical EngineeringAnhui University of TechnologyMa’anshan 243002Chin

tWe proposed a facile synthesis of single-Ni-atom catalysts on low-cost porous carbon using a calcina-tion method at the temperatures of 850-1000°C,which were used for CO_(2) electrochemical reduction to *** porous carbon was prepared by carbonizing cheap and abundant humic *** structural characterizations of the as-synthesized catalysts and their electrocatalytic performances were *** results showed that the single-Ni-atom catalyst activated at 950°C showed an optimum catalytic performance,and it reached a CO Faradaic efficiency of 91.9% with a CO partial current density of 6.9 mAcm^(-2)at-0.9 V *** hydrogen electrode(RHE).Additionally,the CO Faradaic efficiency and current density of the optimum catalyst changed slightly after 8 h of continuous operation,suggesting that it possessed an excellent *** structure-activity relations indicate that the variation in the CO_(2) electroche-mical reduction performance for the as-synthesized catalysts is ascribed to the combined effects of the increase in the content of pyrrolic N,the evaporation of Ni and N,the decrease in pore volume,and the change in graphitization degree.

关键词： CO_(2) electroreduction single-Ni-atom cataly-sts humic acid based porous carbon

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