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开放实验:微电场下氯化钠水溶液的结构和物理性质

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化学教育（中英文） 2024年第20期45卷 43-50页

作者：李非张丁予冯明远于晓晴何艳张婷婷刘杰郭小甫汪婧纪志永郎利影河北工业大学化工学院海水资源高效利用化工技术教育部工程研究中心天津300401 河北省现代海洋化工技术协同创新中心天津300401 河北工业大学建筑与艺术设计学院天津300401 河北工业大学本科生院天津300401

电渗析法海水制盐是一项成熟的工业技术,可替代传统日晒法海水制盐,但电场作用下离子迁移过程尚不够明晰,对其理论认知亟需推进。从外电场对氯化钠水溶液结构的影响入手,设计综合性开放实验:以电渗析实际操作条件为依据,选取0 V和4.5 V... 详细信息

电渗析法海水制盐是一项成熟的工业技术,可替代传统日晒法海水制盐,但电场作用下离子迁移过程尚不够明晰,对其理论认知亟需推进。从外电场对氯化钠水溶液结构的影响入手,设计综合性开放实验:以电渗析实际操作条件为依据,选取0 V和4.5 V直流电压条件,指导本科生应用拉曼光谱法和分子动力学模拟2种手段表征和分析有无电场下NaCl水溶液的微观结构,并测试溶液黏度,尝试将溶液的微观结构与宏观物理性质进行关联,引导学生探索事物的微观本质,激发创新意识。实验整体具有高阶性、创新性和挑战度。

关键词：开放实验溶液结构电渗析黏度

Hydrogen production from coke oven gas over LiNi/γ-Al_2O_3 catalyst modified by rare earth metal oxide in a membrane reactor

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Journal of Natural Gas Chemistry 2009年第4期18卷 407-414页

作者： Zhibin Yang Yunyan zhang Weizhong ding Yuwen zhang Peijun Shen Yuding Zhou Yong Liu Shaoqing Huang Xionggang Lu Shanghai Key Laboratory of Modern Metallurgy and Materials Processing Shanghai University Shanghai 200072 China

The performance of LiNi/γ-Al2O3 catalysts modified by rare earth metal oxide （La2O3 or CeO2） packed on BCFNO membrane reactor was discussed for the partial oxidation of methane （POM） in coke oven gas （COG） at 875 ℃. The NiO/γ-Al2O3 catalysts with different amounts of La2O3 and CeO2 were prepared with the same preparation method and under the same condition in order to compare the reaction performance （oxygen permeation, CH4 conversion, H2 and CO selectivity） on the membrane reactor. The results show that the oxygen permeation flux increased significantly with LiNiREOx/γ-Al2O3 （RE = La or Ce） catalysts by adding the element of rare earth especially the Ce during the POM in COG. Such as, the Li15wt%CeO29wt%NiO/γ-Al2O3 catalyst with an oxygen permeation flux of 24.71 ml·cm^-2·min^-1 and a high CH4 conversion was obtained in 875 ℃. The resulted high oxygen permeation flux may be due to the added Ce that inhibited the strong interaction between Ni and Al2O3 to form the NiAl2O4 phase. In addition, the introduction of Ce leads up to an important property of storing and releasing oxygen.

关键词： rare earth metal oxide oxygen permeation membrane reactor

钠离子电池正极材料磷酸焦磷酸铁钠的研究进展

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南京工业大学学报（自然科学版） 2024年第3期46卷 235-250页

作者：张鼎周启坤刘镇铭胡新颖叶子贤药志超李卫武汉工程大学化工与制药学院湖北武汉430205 浙江瓦司特钠科技有限公司浙江嘉兴314000 内蒙古师范大学物理与电子信息学院内蒙古呼和浩特010000

钠离子电池(SIB)是继锂离子电池(LIB)后,最具有应用前景的电池技术之一,而磷酸焦磷酸铁钠是一种具备较高可逆比容量、长循环寿命的复合型钠离子电池聚阴离子型正极材料。系统地总结了磷酸焦磷酸铁钠的制备方法与电化学性能,揭示了磷酸... 详细信息

钠离子电池(SIB)是继锂离子电池(LIB)后,最具有应用前景的电池技术之一,而磷酸焦磷酸铁钠是一种具备较高可逆比容量、长循环寿命的复合型钠离子电池聚阴离子型正极材料。系统地总结了磷酸焦磷酸铁钠的制备方法与电化学性能,揭示了磷酸焦磷酸铁钠材料具备的基本结构特性与储钠电极反应机制。同时,分析了已有的磷酸焦磷酸铁钠正极材料的改性方法和电化学性能提升机制,展望了该领域的发展趋势,指出深入的理论研究和工艺改进是重要的研究方向。

关键词：钠离子电池聚阴离子正极材料磷酸焦磷酸铁钠制备方法电化学性能

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海拔高度对安康市烤烟品质的影响探究

陕西农业科学 2024年第8期70卷 43-48页

作者：张旭李小芳张玎王智慧刘海轮赵鹏马翎健西北农林科技大学农学院陕西杨凌712100 陕西省烟草公司安康市公司陕西安康725000 安康市气象局陕西安康725000

【目的】研究安康烟区不同海拔高度与烤烟品种云烟99三种等级烟叶(B2F、C3F、X2F)烤烟质量以及风格特征的关联性。【方法】选择秦岭巴山一带海拔高度在355~1500 m之间的植烟区域,以云烟99作为研究对象,探究不同海拔高度对应烤烟在常规... 详细信息

【目的】研究安康烟区不同海拔高度与烤烟品种云烟99三种等级烟叶(B2F、C3F、X2F)烤烟质量以及风格特征的关联性。【方法】选择秦岭巴山一带海拔高度在355~1500 m之间的植烟区域,以云烟99作为研究对象,探究不同海拔高度对应烤烟在常规化学成分组成以及感官质量之间的影响作用。【结果】随着海拔高度的提升,不同等级烤烟常规化学成分和风格特性变化规律呈现差异性。其中B2F等级烤烟中烟碱、总氮和两糖比呈现下降趋势,总糖、还原糖、钾、氯、糖碱比、钾氯比呈现上升趋势,同时海拔高度越高,B2F等级烤烟香气质、香气量随之提升,而浓度、劲头、杂气和刺激性随之下降;C3F等级烤烟中烟碱、还原糖、氯、总氮和两糖比呈现下降趋势,总糖、钾、糖碱比、钾氯比呈现上升趋势,同时海拔高度越高,C3F等级烤烟香气质、香气量、杂气和刺激性随之提升,而浓度和劲头随之下降;X2F等级烤烟中烟碱、氯、总氮和两糖比呈现下降趋势,总糖、还原糖、钾、糖碱比、钾氯比呈现上升趋势,同时海拔高度越高,X2F等级烤烟香气质、香气量、浓度和劲头随之提升,而杂气和刺激性随之下降。【结论】随着海拔提升,不同等级烤烟总糖、钾、糖碱比、氮碱比皆保持上升趋势,同时烤烟的香气质和香气量也随着海拔提高而提高,其它因素存在差异性变化,因此认为适当提高植烟海拔高度,有利于提升烤烟的质量和烤烟中的清甜香型口味。

关键词：海拔安康烤烟烤烟品质

熔覆电流对高钼高钒铁基硬质涂层组织结构与性能的影响

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铸造技术 2024年第6期45卷 557-564页

作者：张顶宋庆雷张平郭喜平柳学强沈承金中国矿业大学材料与物理学院江苏徐州221116 西北工业大学凝固技术国家重点实验室陕西西安710072 徐州巴特工程机械股份有限公司江苏徐州221005

刃板的磨损失效往往导致整个挖斗报废,为了提高其耐磨性能,采用等离子熔覆技术在刃板材料Q345B表面制备高钼高钒铁基耐磨涂层,研究熔覆电流(120、140、160 A)对涂层组织结构的影响,考察涂层的显微硬度、摩擦磨损与耐冲击性能。结果表明... 详细信息

刃板的磨损失效往往导致整个挖斗报废,为了提高其耐磨性能,采用等离子熔覆技术在刃板材料Q345B表面制备高钼高钒铁基耐磨涂层,研究熔覆电流(120、140、160 A)对涂层组织结构的影响,考察涂层的显微硬度、摩擦磨损与耐冲击性能。结果表明,电流大小对涂层的组织结构与界面状态影响较大,涂层组织主要由马氏体基体、弥散分布的细小球形碳化钒(VC)、多边形块状硼化钼(Mo_(2)B)和层片状复合硼碳化物(M_(2)(B,C))组成。120 A下制备的涂层与基材界面处存在局部未熔合区,增大电流导致涂层中VC的尺寸和分布间距变大,Mo_(2)B消失,M_(2)(B,C)增多且尺寸增大。涂层的平均显微硬度约为920 HV0.1,是耐磨钢NM400的2倍多,同等条件下的磨损失重仅为NM400的1/20,表现出优异的耐磨性能。带基材的涂层具有良好的耐冲击性能,且平行熔覆纹路的耐冲击性能优于垂直熔覆纹路的。

关键词：等离子熔覆高钼高钒铁基硬质涂层组织结构耐磨性能熔覆纹路

Superconductivity above 28K in single unit cell FeSe ?lms interfaced with GaO_(2-δ) layer on NdGaO_3(110)

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Science Bulletin 2019年第8期64卷 490-494页

作者： Haohao Yang Guanyu Zhou Yuying Zhu Guan-Ming Gong Qinghua zhang Menghan Liao Zheng Li Cui ding Fanqi Meng Mohsin Rafique Heng Wang Lin Gu ding zhang Lili Wang Qi-Kun Xue State Key Laboratory of Low-Dimensional Quantum Physics Department of Physics Tsinghua University Laboratory for Advanced Materials & Electron Microscopy Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Collaborative Innovation Center of Quantum Matter

The discovery of high temperature superconductivity in single unit cell(UC)FeSe on TiO2-δterminated perovskite SrTiO3(001)substrates[1]has attracted intensive attention on searching for new superconducting systems wi... 详细信息

关键词： Ga 110 lms interfaced with GaO Superconductivity above 28K in single unit cell FeSe layer on NdGaO3 UC

Synthesis of hierarchically porous carbon materials by zinc salts-assisted carbonization of biomass and organic solid wastes

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Particuology 2024年第1期84卷 45-52页

作者： Le-Le zhang Lei Tong Yanwei ding Wanqun zhang Hai-Wei Liang Hefei National Research Center for Physical Sciences at the Microscale Department of ChemistryUniversity of Science and Technology of ChinaHefei230026China

Hierarchically porous carbons(HPCs)with multimodal pores have attracted considerable attention due to their unique physical and chemical properties and various application potentials in heterogeneous catalysis,environmental treatment,and energy storage and ***,we report a general and simple zinc salts-assisted method for the synthesis of HPCs with varied porosity and chemical func-tionalities by the direct carbonization of diverse biomass and *** the carbonization,zinc salts are thermally decomposed into nanoparticles that serve as in-situ templates to introduce nanopores in *** prepared HPCs exhibit high specific surface areas(up to 2432 m2 g-1),large pore volumes(up to 4.30 cm^(3)g^(-1)),and broad pore size ***,the zinc salts can be recovered and recycled,supporting the sustainable production of HPCs on large *** prepared HPCs-supported catalysts with atomically dispersed metal sites exhibit promising electrocatalytic performance for the oxygen reduction reaction.

关键词： Hierarchical porous carbon Zinc salts Biomass Wastes Electrocatalysis

Integrated Active Suspension and Anti-Lock Braking Control for Four-Wheel-Independent-Drive Electric Vehicles

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Chinese Journal of Mechanical Engineering 2024年第1期37卷 87-98页

作者： Ze Zhao Lei zhang Xiaoling ding Zhiqiang zhang Shaohua Li Liang Gu National Engineering Research Center for Electric Vehicles Beijing Institute of TechnologyBeijing 100081China State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures Shijiazhuang Tiedao UniversityShijiazhuang 050043China

This paper presents an integrated control scheme for enhancing the ride comfort and handling performance of a four-wheel-independent-drive electric vehicle through the coordination of active suspension system(ASS)and anti-lock braking system(ABS).First,a longitudinal-vertical coupled vehicle dynamics model is established by integrating a road input *** the coupling mechanisms between longitudinal and vertical vehicle dynamics are *** ASS-ABS integrated control system is proposed,utilizing an H∞controller for ASS to optimize load transfer effect and a neural network sliding mode control for ABS ***,the effectiveness of the proposed control scheme is evaluated through comprehensive tests conducted on a hardware-in-loop(HIL)test *** HIL test results demonstrate that the proposed control scheme can significantly improve the braking performance and ride comfort compared to conventional ABS control methods.

关键词： Four-wheel-independent-drive electric vehicles Active suspension system(ASS) Anti-lock braking system(ABS) Vertical-longitudinal vehicle dynamics

The formation and tectonic evolution of Philippine Sea Plate and KPR

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Acta Oceanologica Sinica 2011年第4期30卷 75-88页

作者： FANG Yinxia LI Jiabiao LI Mingbi ding Weiwei zhang Jie The Second Institute of Oceanography State Oceanic Administration Hangzhou 310012 China

The Philippine Sea Plate has an extremely special tectonic background. As an oceanic plate,it is almost entirely surrounded by subduction zones with complex internal tectonic features. On the basis of enormous published literature,this paper offers a comprehensive overview of the tectonic and evolution history of the Philippine Basin and the Kyushu-Palau Ridge（KPR） in the Philippine Sea Plate,and discusses the geological features of KPR. Referring to relevant definitions of various ＂ridges＂ stipulated in United Nations Convention on the Law of the Sea,so the KPR is believed to be a remnant arc formed during the opening of the Parece Vela and Shikoku Basins in the Philippine Sea Plate. It is a submarine ridge on oceanic plate rather than a submarine elevation. And thus,it is not a natural component of the Japan continental margin.

关键词： Philippine Sea Plate West Philippine Basin KPR submarine ridge