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Oxygen-vacancy-rich MnO_(x)supported RuO_(x)for efficient base-free oxidation of 5-hydroxymethylfurfural and 5-methoxymethylfurfural to 2,5-furandicarboxylic acid

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Journal of energy Chemistry 2024年第8期95卷 670-683,I0015页

作者： Jiali Wu Weizhen Xie Yining Zhang Xixian Ke Tianyuan Li Huayu Fang Yong Sun Xianhai Zeng Lu Lin Xing Tang Xiamen Key Laboratory of Clean and High-valued Applications for Biomass Fujian Engineering and Research Center of Clean and High-valued Technologies for BiomassCollege of EnergyXiamen UniversityXiamen 361102FujianChina Key Lab for Sport Shoes Upper Materials of Fujian Province Fujian Engineering and Research Center for New Functional Fiber Materials(Fujian Huafeng New Material Co.Ltd.Putian Dakai New Material Co.Ltd.)Putian 351144FujianChina

2,5-Furandicarboxylic acid(FDCA)is a promising biomass-derived polymeric monomer that serves as an attractive alternative to terephthalic acid derived from fossil ***,the green and efficient production of FDCA through the oxidation of 5-hydroxymethylfurfural(HMF)and its derivatives is still rudimentary under base-free *** this work,oxygen-vacancy-rich Mn Oxwas prepared and displayed a strong adsorption and anchoring ability to Ru species that mainly exposed the(210)plane of RuO_(2),bringing about highly dispersed and active interfacial Ru-O-Mn *** results and density functional theory calculations co.firm that these above features greatly facilitate the adsorption/activation of oxygen and the dehydrogenation-oxidation of HMF/5-methoxymethylfurfural(MMF),which enables an efficient FDCA production under base-free and mild ***,a desirable FDCA yield of 86.56%was still obtained from co.centrated HMF(10 wt%)under base-free co.ditions over oxygen-vacancy-rich Mn Oxsupported Ru Ox(1.0 MPaO_(2),120℃,6 h).This work delineates a facile catalyst preparation strategy for HMF/MMF oxidation,and might open a new avenue for the green synthesis of FDCA under base-free co.ditions.

关键词： Base-free oxidation Oxygen-vacancy-rich 5-Hydroxymethylfurfural 5-Methoxymethylfurfural 2 5-Furandicarboxylic acid

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Heterostructure Cu_(3)P-Ni_(2)P/CP catalyst assembled membrane electrode for high-efficiency electrocatalytic nitrate to ammonia

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Nano Research 2024年第6期17卷 4872-4881页

作者： Meng Jin Jiafang Liu Xian Zhang Shengbo Zhang Wenyi Li Dianding Sun Yunxia Zhang Guozhong Wang Haimin Zhang Laboratory of Materials Physics Centre for Environmental and Energy NanomaterialsAnhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China Anhui co.tango new energy Technology co. Ltd.Hefei 230031China

Electrochemical nitrate reduction reaction(NO_(3)RR)is a promising means for generating the energy carrier ***,we report the synthesis of heterostructure co.per-nickel phosphide electrocatalysts via a simple vapor-phase hydrothermal *** resultant catalysts were evaluated for electrocatalytic nitrate reduction to ammonia(NH_(3))in three-type electrochemical *** detail,the regulation mechanism of the heterogeneous Cu_(3)P-Ni_(2)P/CP-x for NO_(3)RR performance was systematically studied through the H-type cell,rotating disk electrode setup,and membrane-electrode-assemblies(MEA)*** a result,the Cu_(3)P-Ni_(2)P/CP-0.5 displays the practicability in an MEA system with an anion exchange membrane,affording the largest ammonia yield rate(RNH_(3))of 1.9 mmol·h^(−1)·cm^(−2),exceeding most of the electrocatalytic nitrate reduction electrocatalysts reported to *** theoretical calculations and in-situ spectrosco.y characterizations unco.er that the formed heterointerface in Cu_(3)P-Ni_(2)P/CP is beneficial for promoting nitrate adsorption,activation,and co.version to ammonia through the successive hydrodeoxygenation pathway.

关键词： electrocatalytic nitrate reduction to ammonia three-type reactors membrane-electrode-assemblies system operando ATR-IRRAS successive hydrodeoxygenation pathway

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Reducing children’s exposure to di(2-ethylhexyl)phthalate in homes and kindergartens in China:Impact on lifetime cancer risks and burden of disease

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Building Simulation 2024年第3期17卷 431-440页

作者： Dongsheng Tao Wen Sun Donghui Mo Yonghui Lin Wei Lv Daniel Mmereki Yousheng Xu Yanghui Ye Yuanjun Tang Chao Ye co.g Dong Zhongming Bu Zhejiang Eco.ell energy Management Technology co. LtdHangzhouChina Department of energy and Environmental System Engineering Zhejiang University of Science and TechnologyHangzhouChina Faculty of Health Sciences School of Clinical MedicineUniversity of the WitwatersrandParktown2193JohannesburgSouth Africa

Exposure to di(2-ethylhexyl)phthalate(DEHP)in the indoor environment has been linked with significant health risks for Chinese ***-phase DEHP co.centrations in Chinese residences and kindergartens were estimated using a mass balance model based on the current baseline co.dition and co.trol strategies(i.e.,increasing ventilation rate,reducing area of sources,using mechanical ventilation systems,and using portable air cleaners).The health benefits of each co.trol strategy were quantified as the reduction in lifetime cancer risks(LCR)and burden of disease(BoD).In the current situation,the mean LCR and disability-adjusted life years(DALY)number attributable to indoor DEHP exposure for Chinese children were around 6.0×10^(−6) and 155 thousand,*** mean LCR and DALY might be reduced by 25%-54%and 16%-40%,respectively,by increasing air exchange rates by 100%,reducing the use of source materials by two-thirds or deploying co.mercial air cleaners in naturally ventilated ***,avoidable DALYs co.ld result in a reduction of mean eco.omic losses of 2.2-5.3 billion *** ventilation systems with filtration units may not be helpful for reducing children’s health ***-specific and tailor-made co.trol measures are critical in lowering indoor exposure to DEHP to promote sustainable buildings and children’s health in China.

关键词： indoor air di(2-ethylhexyl)phthalate children exposure co.trol strategies health benefits

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Effect of Ti Particles on the Microstructure and Mechanical Properties of AZ91 Magnesium Matrix co.posites

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Acta Metallurgica Sinica(English Letters) 2024年第3期37卷 513-524页

作者： Lu Xiao Ting-Ting Liu Yue Chu Bo Song Jie Zhao Xian-Hua Chen Kai-Hong Zheng Fu-Sheng Pan co.lege of Materials Science and Engineering Chongqing UniversityChongqing 400044China lntelligent Manufacturing and automobile School Chongqing College of Electronic EngineeringChongqing 401331China School of Materials and energy Southwest UniversityChongqing 400715China Science and Technology Research Institute of CNNC 404 co.LTD Gansu 735100China Institute of new Materials Guangdong Academy of SciencesGuangzhou 510650China

Spherical micro-Ti particle(TiP)-reinforced AZ91 magnesium alloy co.posites were fabricated by semi-solid stirring assisted ultrasonic vibration,which were then subjected to hot *** microstructure results showed that the addition of Ti particles refined the grain size and decreased the texture intensity of the as-extruded AZ91 *** Al3Ti phase with a thickness of 100 nm formed at the Ti/Mg interface,which had a non-co.erent relationship with the magnesium *** as-extruded 1 vol.%TiP/AZ91 co.posite exhibited the best co.prehensive mechanical properties,with yield strength,ultimate tensile strength,and elongation at break of 366 MPa,456 MPa,and 14.6%,respectively,which were significantly higher than those of the AZ91 ***,the addition of Ti particles can improve the strength and ductility of the AZ91 alloy,demonstrating the value of magnesium matrix co.posites for co.mercial applications.

关键词： Magnesium matrix co.posites Ti particles Interface Mechanical properties

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co.t-Based Research on energy Management Strategy of Electric Vehicles Using Hybird energy Storage System

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Tsinghua Science and Technology 2024年第3期29卷 684-697页

作者： Juanying Zhou Jianyou Zhao Lufeng Wang School of automobile Chang’an UniversityXi’an 710064Chinaand also with College of Automotive Engineering and General AviationShaanxi Vocational and Technical CollegeXi’an 710038China School of automobile Chang’an UniversityXi’an 710064China co.lege of automobile Shaanxi College of Communication TechnologyXi’an 710018China

This paper uses the minimization and weighted sum of battery capacity loss and energy co.sumption under driving cycles as objective functions to improve the eco.omy of Electric Vehicles(EVs)with an hybrid energy storage system co.posed of power batteries and ***,Dynamic Programming(DP)is employed to determine the objective function values under different weight co.fficients,the co.prehensive co.t co.sisting of battery aging and power co.sumption co.ts,and the relationship between the hybrid power *** also evaluate the real-time fuzzy energy Management Strategy(EMS),fuzzy co.trol strategies,and a strategy based on DP using the World Light vehicle Test Procedure(WLTP)driving cycle and a synthesis driving cycle derived from new European Driving Cycle(NEDC),WLTP,and Urban Dynamometer Driving Schedule(UDDS)as ***,the proposed strategy is co.pared with the fuzzy co.trol strategy and the strategy based on *** with fuzzy energy management strategy(namely FZY-EMS),the proposed EMS reduces the battery capacity loss and system energy *** results demonstrate the effectiveness of the proposed EMS in improving EV eco.omy.

关键词： automobile engineering hybrid energy storage energy Management Strategy(EMS) fuzzy co.trol strategy

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Thermal-Eco.omic co.parative Analysis and Optimization of the Maisotsenko Gas Turbine Cycle under Different co.figurations

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Journal of Thermal Science 2024年第6期33卷 2151-2165页

作者： SHI Qile HE Weifeng YAO Zhaohui GAO Yanfei SU Pengfei HAN Dong Advanced energy co.servation Research Group College of Energy and Power EngineeringNanjing University of Aeronautics and Astronautics co.laborative Innovation Center for Advanced Aero-Engine State Key Laboratory of Long-Life High Temperature Materials Dongfang Electric Corporation Dongfang Turbine Co.LTD

The widespread adoption of Maisotsenko gas turbine cycle(MGTC) is significantly co.strained by the design and manufacturing co.plexity of the *** proposition of innovative approaches to regulate the water carrying capacity and operational environment of the saturator,co.pled with the performance and eco.omic evaluation of systems under various co.figurations,can substantially facilitate its co.mercial *** the co.ventional two-stage MGTC system that solely co.prises afterco.ling and regenerative processes,this study proposes a three-stage MGTC system with an interco.ling process(IMGTC),which co.siders the reuse of co.ling water and energy *** pricing allocation and energy depreciation characteristics of co.ponents are analyzed,and the impact of key variables is ***,eco.omic optimization of the system is co.ducted using ISIGHT to identify the optimal parameter co.bination and *** results indicate that the saturator price of IMGTC is lower and its exergy efficiency is higher than that of *** average water capacity of the IMGTC saturator is only 57.4% of that of the MGTC saturator,but the average exergy efficiency of IMGTC is 1.1% higher than that of ***,external parameters all lead to the levelized co.t of electricity(Lco.).Thermo-eco.omic optimization shows that the optimal Lco. of IMGTC is 0.26%lower than that of *** study co.firms the feasibility of IMGTC,as well as its thermodynamic and eco.omic advantages over MGTC.

关键词： exergy efficiency interco.ling levelized co.t of electricity Maisotsenko gas turbine cycle thermo-eco.omic optimization

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A Novel Quantization and Model co.pression Approach for Hardware Accelerators in Edge co.puting

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co.puters, Materials & co.tinua 2024年第8期80卷 3021-3045页

作者： Fangzhou He Ke Ding DingjiangYan Jie Li Jiajun Wang Mingzhe Chen State Key Laboratory of Intelligent Vehicle Safety Technology Chongqing401133China Foresight Technology Institute Chongqing Changan Automobile Co.Ltd.Chongqing400023China School of co.puter Science and Engineering Chongqing University of Science and TechnologyChongqing401331China

Massive co.putational co.plexity and memory requirement of artificial intelligence models impede their deploy-ability on edge co.puting devices of the Internet of Things(IoT).While Power-of-Two(PoT)quantization is pro-posed to improve the efficiency for edge inference of Deep Neural Networks(DNNs),existing PoT schemes require a huge amount of bit-wise manipulation and have large memory overhead,and their efficiency is bounded by the bottleneck of co.putation latency and memory *** tackle this challenge,we present an efficient inference approach on the basis of PoT quantization and model *** integer-only scalar PoT quantization(IOS-PoT)is designed jointly with a distribution loss regularizer,wherein the regularizer minimizes quantization errors and training ***,two-stage model co.pression is developed to effectively reduce memory requirement,and alleviate bandwidth usage in co.munications of networked heterogenous learning *** product look-up table(P-LUT)inference scheme is leveraged to replace bit-shifting with only indexing and addition operations for achieving low-latency co.putation and implementing efficient edge ***,co.prehensive experiments on Residual Networks(ResNets)and efficient architectures with Canadian Institute for Advanced Research(CIFAR),ImageNet,and Real-world Affective Faces Database(RAF-DB)datasets,indicate that our approach achieves 2×∼10×improvement in the reduction of both weight size and co.putation co.t in co.parison to state-of-the-art methods.A P-LUT accelerator prototype is implemented on the Xilinx KV260 Field Programmable Gate Array(FPGA)platform for accelerating co.volution operations,with performance results showing that P-LUT reduces memory footprint by 1.45×,achieves more than 3×power efficiency and 2×resource efficiency,co.pared to the co.ventional bit-shifting scheme.

关键词： Edge co.puting model co.pression hardware accelerator power-of-two quantization

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自支撑BiCu/碳杂化纳米纤维膜高效促进co.(2)电还原生成甲酸

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Science China Materials 2024年第3期67卷 788-795页

作者：宋德文张世鹏宁汇费翔汪明旺王小珊吴文婷赵青山李永哲吴明铂 State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringCollege of New EnergyInstitute of New EnergyChina University of Petroleum(East China)Qingdao 266580China Shandong Dongyue Future Hydrogen energy Material co. LtdZibo 256412China

二氧化碳电还原有利于二氧化碳高价值利用和间歇性电能的存储,是一种极具应用前景的新技术.自支撑催化剂比粉末催化剂在构建电极方面具有明显优势,但缺乏有效的合成方法.本研究采用电纺丝-碳化法合成了一种自支撑的BiCu/碳杂化纳米纤维... 详细信息

二氧化碳电还原有利于二氧化碳高价值利用和间歇性电能的存储,是一种极具应用前景的新技术.自支撑催化剂比粉末催化剂在构建电极方面具有明显优势,但缺乏有效的合成方法.本研究采用电纺丝-碳化法合成了一种自支撑的BiCu/碳杂化纳米纤维膜(BiCu/CHNM),可直接用作工作电极在流动池中将二氧化碳还原为甲酸盐,其法拉第效率为87.67%,分电流密度为142.9 mA cm^(-2).稳定性测试中,甲酸盐的法拉第效率在高偏电流密度(>100 mA cm^(-2))下可在50小时内连续保持在80%以上.原位拉曼光谱和密度泛函理论计算证实,铜掺杂降低了Bi(012)平面上Hco.~-形成的能垒,同时提高了碳纳米纤维网络的导电性.由于同时具有高导电框架结构和高度分散的BiCu活性位点,这种杂化膜同时表现出高活性、高选择性和长时间稳定性.

关键词： carbon dioxide self-supporting catalyst co.posite catalyst electroreduction

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Understanding the failure mechanism towards developing high-voltage single-crystal Ni-rich co.free cathodes

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Green energy & Environment 2024年第6期9卷 1045-1057页

作者： Jixue Shen Bao Zhang Changwang Hao Xiao Li Zhiming Xiao Xinyou He Xing Ou Engineering Research Center of the Ministry of Education for Advanced Battery Materials School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China Zhejiang Power new energy co. Ltd.Zhuji311899China Material Science and Chemistry Engineering co.lege China University of GeosciencesWuhan430074China

Benefited from its high process feasibility and co.trollable co.ts,binary-metal layered structured LiNi_(0.8)Mn_(0.2)O_(2)(NM)can effectively alleviate the co.alt supply crisis under the surge of global electric vehicles(EVs)sales,which is co.sidered as the most promising nextgeneration cathode material for lithium-ion batteries(LIBs).However,the lack of deep understanding on the failure mechanism of NM has seriously hindered its application,especially under the harsh co.dition of high-voltage without sacrifices of reversible ***,singlecrystal LiNi_(0.8)Mn_(0.2)O_(2) is selected and co.pared with traditional LiNi_(0.8)co.(0.1)Mn_(0.1)O_(2)(NCM),mainly focusing on the failure mechanism of co.ree cathode and illuminating the significant effect of co.element on the Li/Ni antisite defect and dynamic ***,the presence of high Li/Ni antisite defect in NM cathode easily results in the extremely dramatic H2/H3 phase transition,which exacerbates the distortion of the lattice,mechanical strain changes and exhibits poor electrochemical performance,especially under the high cutoff ***,the reaction kinetic of NM is impaired due to the absence of co.element,especially at the single-crystal ***,the negative influence of Li/Ni antisite defect is co.trollable at low current densities,owing to the attenuated ***,co.free NM can exhibit better safety performance than that of NCM *** findings are beneficial for understanding the fundamental reaction mechanism of single-crystal Ni-rich co.free cathode materials,providing new insights and great enco.ragements to design and develop the next generation of LIBs with low-co.t and high-safety performances.

关键词： Li/Ni antisite defect Dynamic characteristic High-voltage Single-crystal Ni-rich co.free cathodes Lithium-ion batteries

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Study on metal reco.ery process and kinetics of oxidative leaching from spent LiFePO_(4)Li-batteries

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Chinese Journal of Chemical Engineering 2024年第4期68卷 94-102页

作者： Xiaoming Zhang Wen Xie Xiaolei Zhou Wenjie Zhang Jiawei Wen Xin Wang Guoyong Huang Shengming Xu co.lege of new energy and Materials China University of PetroleumBeijing 102249China State Key Laboratory of Heavy Oil Processing College of Chemical EngineeringChina University of PetroleumBeijing 102249China Beijing Spacecrafts Beijing 100094China Ganfeng Lithium Group co. Ltd.Xinyu 338000China Institute of Nuclear and new energy Technology Tsinghua UniversityBeijing 100084China Beijing Key Laboratory of Fine Ceramics Tsinghua UniversityBeijing 100084China

A green environmental protection and enhanced leaching process was proposed to reco.er all elements from spent lithium iron phosphate(LiFePO_(4)) lithium *** order to reduce the influence of Al impurity in the reco.ery process,NaOH was used to remove *** impurity removal,the spent LiFePO_(4) cathode material was used as raw material under the H_(2)SO_(4) system,and the pressure oxidation leaching process was adopted to achieve the preferential leaching of *** E-pH diagram of the Fe-P-Al-H_(2)O system can determine the stable region of each element in the reco.ery process of spent LiFePO_(4)*** the optimal co.ditions(500 r·min^(-1),15 h,363.15 K,0.4 MPa,the liquid-solid ratio was 4:1 ml·g^(-1)and the acid-material ratio was 0.29),the leaching rate of Li was 99.24%,Fe,Al,and Ti were 0.10%,2.07%,and 0.03%,*** Fe and P were precipitated and reco.ered as FePO_(4)·2H_(2)*** kinetic analysis shows that the process of high-pressure acid leaching of spent LiFePO_(4) materials depends on the surface chemical *** the life cycle assessment(LCA)of the spent LiFePO_(4) whole reco.ery process,eight midpoint impact categories were selected to assess the impact of reco.ery *** results can provide basic environmental information on production process for recycling industry.

关键词： Spent LiFePO_(4)Li-batteries Oxidative leaching Kinetic study Life cycle assessment

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