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Catalytic oxidation of vinyl chloride over Co-Ce composite oxides derived from ZIF-67 template:Effect of cerium incorporation

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Journal of Rare Earths 2023年第6期41卷 870-880,I0003页

作者： Hongliang Zhang Shuoming wang mingju wang Guanghao Li Lihang Yu Xuehua Liu Zhong wang Chuanhui Zhang Institute of Materials for Energy and Environment College of Materials Science and EngineeringQingdao UniversityQingdao 266071China Key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China

Transition metal oxides are regarded as an economical and efficient catalytic alternate for catalytic oxidation of volatile organic compounds(VOCs)*** morphological decoration and the incorporation of extrinsic metals were demonstrated to be effective strategies for achieving noticeable catalytic *** this work,a novel Co-Ce composite oxides catalyst was obtained by the pyrolysis of ZIF-67 template with the impregnation of certain cerium cations(denoted as ZIF-CoCe).Compared with the reference Co-Ce composite oxides by the sol-gel(denoted as SG-CoCe)and physical mixing(denoted as MIX-CoCe)methods,ZIF-CoCe delivers significantly higher catalytic activity for vinyl chloride oxidation,which are demonstrated to be closely related with its superior redox capacity,more abundance of surface active Co^(3+)sites and adsorbed active oxygen species from oxygen *** addition,the unique cage-like morphological feature of the Co-based catalysts derived from ZIF-67 template plays a crucial function in kinetically facilitating the mass transfer of catalytic reaction and promoting the catalytic VC oxidation *** regard to in situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTs)analysis,enol and carboxylic acid species are identified to be the key organic intermediates during catalytic vinyl chloride oxidation.

关键词： Rare earth Catalytic oxidation Cerium incorporation Redox behavior Surface oxygen species

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民法典视阙下《反食品浪费法》研究

乐山师范学院学报 2023年第6期38卷 121-129,140页

作者：王明菊河北地质大学法政学院河北石家庄050000

《反食品浪费法》实现了反食品浪费由“事理”向“法理”的转变。但自其实施以来,暴露出反餐饮浪费多重主体义务履行受阻、食品捐赠制度原则性规定尚未明确等问题,导致其无法满足新时代“保障粮食安全”“实现可持续发展”的现实需要。... 详细信息

《反食品浪费法》实现了反食品浪费由“事理”向“法理”的转变。但自其实施以来,暴露出反餐饮浪费多重主体义务履行受阻、食品捐赠制度原则性规定尚未明确等问题,导致其无法满足新时代“保障粮食安全”“实现可持续发展”的现实需要。因而应在民法典的新生视阙下,于条文检视的基础之上,提出反餐饮浪费的对应之策:完善标准化及信息手段方面的相关策略;构建以消费者为核心的社会共治格局;积极促进环境公益诉讼的接入,以期实现反食品浪费领域的“良法善治”。

关键词：《反食品浪费法》餐饮浪费《民法典》社会共治

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Theoretical and experimental investigations on single-atom catalysis:Pt1/FeOx for water-gas shift reaction Shan-Fei wang1,§,Yangyang Li2,3,§,Haiyan wang1,Jin-Xia Liang1(✉),Chun Zhu1

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Nano Research 2024年第9期17卷 8627-8637页

作者： Shan-Fei wang Yangyang Li Haiyan wang Jin-Xia Liang Chun Zhu Botao Qiao School of Chemistry and Chemical Engineering Guizhou UniversityGuiyang 550025China CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China

Oxide-supported metal single-atom catalysts(SACs)have exhibited excellent catalytic performance for water-gas shift(WGS)***,we report the single-atom catalyst Pt1/FeOx exhibits excellent medium temperature catalytic performance for WGS reactions by the density functional theory(DFT)calculations and experimental *** calculations indicate that H_(2)O molecules are easily dissociated at oxygen vacancies,and the formed*OH and*O are adsorbed on Pt1 single atoms and the adjacent O atoms,*** studying four possible reaction mechanisms,it is found that the optimal WGS reaction pathway is proceeded along the carboxyl mechanism(pathway III),in which the formation of*COOH intermediates can promote the stability of Pt1/FeOx SAC and the easier occurrence of WGS *** energy barrier of the rate-determining step during the entire reaction cycle is only 1.16 eV,showing the high activity for the medium temperature WGS reaction on Pt1/FeOx SAC,which was verified by experimental ***,the calculated turnover frequencies(TOFs)of CO_(2)and H_(2)formation on Pt1/FeOx at 610 K(337℃)can reach up to 1.14×10^(-3)s^(-1)·site^(-1)through carboxyl *** this work,we further expand the application potential of Pt1/FeOx SAC in WGS reaction.

关键词： water-gas shift(WGS)reaction single-atom catalyst(SAC) density functional theory(DFT) thermocatalysis

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工业机器人药品装盒工作站的设计

机械制造 2023年第11期61卷 73-76页

作者：纪海宾汪明具徐州工业职业技术学院机电工程学院江苏徐州221006 江苏省工程装备智能制造技术研发中心江苏徐州221006

针对现有粉剂袋装药品装盒时存在的效率低、成本高等问题,基于SCARA机器人和输送链跟踪系统,设计了工业机器人药品装盒工作站。应用SolidWorks软件和RobotStudio软件,进行工业机器人药品装盒工作站的搭建与仿真。仿真结果表明,所设计的... 详细信息

针对现有粉剂袋装药品装盒时存在的效率低、成本高等问题,基于SCARA机器人和输送链跟踪系统,设计了工业机器人药品装盒工作站。应用SolidWorks软件和RobotStudio软件,进行工业机器人药品装盒工作站的搭建与仿真。仿真结果表明,所设计的工业机器人药品装盒工作站布局合理,运行灵活,拾取节拍约为每袋1 s,装盒节拍约为每盒10 s,包装准确率高,漏装率低,对粉剂袋装药品装盒自动线的设计而言具有参考价值。

关键词：工业机器人药品装盒工作站设计

The reformation of catalyst:From a trial-and-error synthesis to rational design

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Nano Research 2024年第4期17卷 3261-3301页

作者： Ligang wang Jiabin Wu Shunwu wang Huan Liu Yao wang Dingsheng wang Department of Chemistry Tsinghua UniversityBeijing 100084China

The appropriate catalysts can accelerate the reaction rate and effectively boost the efficient conversion of various molecules,which is of great importance in the study of chemistry,chemical industry,energy,materials and environmental ***,efficient,environmentally friendly,and easy to operate synthesis methods have been used to prepare various types of *** previous studies have reported the synthesis and characterization of the aforementioned catalysts,more still remain in trial and error methods,without in-depth consideration and improvement of traditional synthesis ***,we comprehensively summarize and compare the preparation methods of the trial-and-error synthesis strategy,structure–activity relationships and density functional theory(DFT)guided catalysts rational design for nanomaterials and atomically dispersed *** also discuss in detail the utilization of the nanomaterials and single atom catalysts for converting small molecules(H_(2)O,O_(2),CO_(2),N_(2),etc.)into value-added products driven by electrocatalysis,photocatalysis,and ***,the challenges and outlooks of mass preparation and production of efficient and green catalysts through conventional trial and error synthesis and DFT theory are featured in accordance with its current development.

关键词： trial-and-error synthesis structure–activity relationships density functional theory(DFT)guidance nanomaterials atomically dispersed catalysts

Effect of magnetism on the adsorption of methylene blue using engineered biochar pyrolyzed from agricultural waste

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Effect of magnetism on the adsorption of methylene blue usin...

Numerical Analysis of PRISM-PY Calculations for Hard-and Soft-Core Generic Polymer Models

河南省化学会2016年学术年会

作者： Guoting Li mingju wang Bingtao Liu Xinbao Li Yiping Guo Department of Environmental and Municipal Engineering North China University of Water Resources and Electric Power

Agricultural waste is a realistic source for synthesizing low-cost adsorbent. Recently attention has been paid to the utilization and application of biochar, which is derived from the biomass via inco

关键词： magnetism biochar adsorption agricultural waste

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Chinese Journal of Polymer Science 2024年第4期42卷 532-543页

作者： Qiang wang Department of Chemical and Biological Engineering Colorado State University1370 Campus DeliveryFort CollinsCO80523-1370USA

Generic polymer models capturing the chain connectivity and excluded-volume interactions between polymer segments can be classified, according to whether or not the 3D integral of the latter diverges, into hard- and soft-core models. Taking homogeneous systems of compressible homopolymer melts (or equivalently homopolymer solutions in an implicit, good solvent) in the continuum as an example, we recently compared the correlation effects on the structural and thermodynamic properties of the hard- and soft-core models given by the polymer reference interaction site model (PRISM) theory with the Percus-Yevick (PY) closure (Polymers 2023, 15, 1180). Here we analyzed in detail the numerical errors and behavior of the interchain pair correlation functions (PCFs) given by the PRISM-PY calculations of these models using an efficient numerical approach that we proposed. Our numerical approach has the least number of independent variables to be iteratively solved, analytically treats the discontinuities caused by the non-bonded pair potential (such as that of the hard spheres) and takes only the inverse Fourier transform of the interchain indirect PCF between polymer segments (which is continuous and decays towards 0 with increasing wavenumber much faster than both the interchain direct and total PCFs), and is essential for us to accurately solve the PRISM-PY theory for chain length N as large as 106. To capture the correlation-hole effect, the real-space cut-off in the PRISM calculations should be proportional to the square root of N.

关键词： Generic polymer models Soft potentials Polymer reference interaction site model theory

Linear-Quadratic Pareto Cooperative Game for Mean-Field Backward Stochastic System

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Journal of Systems Science & Complexity 2024年第3期37卷 947-964页

作者： wang Yu School of Control Science and Engineering Shandong UniversityJinan 250061China

This paper focuses on a Pareto cooperative differential game with a linear mean-field backward stochastic system and a quadratic form cost functional. Based on a weighted sum optimality method, the Pareto game is equivalently converted to an optimal control problem. In the first place,the feedback form of Pareto optimal strategy is derived by virtue of decoupling technology, which is represented by four Riccati equations, a mean-field forward stochastic differential equation(MF-FSDE),and a mean-field backward stochastic differential equation(MF-BSDE). In addition, the corresponding Pareto optimal solution is further obtained. Finally, the author solves a problem in mathematical finance to illustrate the application of the theoretical results.

关键词： Backward stochastic differential equation linear-quadratic control mean-field Pareto optimality

Light People: Professor Fanglin Bao and his cover story

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Light(Science & Applications) 2024年第6期13卷 1015-1020页

作者： Ji wang School of Science Westlake UniversityHangzhouZhejiangPR China

Qu Yuan,a renowned ancient Chinese poet,once pondered in his work Heavenly Inquiry:“If the sun’s light is absent,from where does the radiance of the Hero Flower emanate?”The ability to see clearly in the darkest of nights has long been a sought-after magical power by *** holds not only immense technological significance for computer vision and remote sensing but also profound implications for transcending the dichotomy between day and night in our daily *** Fanglin Bao from Westlake University has made significant breakthroughs in this field,bringing us closer to a world where we can transform night into *** groundbreaking research on Heat-Assisted Detection and Ranging(HADAR)and night vision was featured as the cover story in Nature on July 26,2023.

关键词： bringing breakthrough holds