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Energy & Environmental Materials 2022年第3期5卷 935-943页

作者： xianli wu Guosheng Han Hao Wen Yanyan Liu Lei Han Xingyu Cui Jiajing Kou Baojun Li Jianchun Jiang Research Center of Green Catalysis College of ChemistryZhengzhou University100 Science RoadZhengzhou 450001China National Engineering Laboratory for Biomass Chemical Utilization Institute of Chemical Industry of Forest ProductsChinese Academy of ForestryNanjing 210042China College of Science Henan Agricultural UniversityZhengzhou 450002China Davidson School of Chemical Engineering Purdue University480 Stadium Mall DriveIN 47906United States State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University28 Xianning West RoadXi'an 710049China

The development of efficient catalytic electrode toward oxygen reduction reaction(ORR)is still a great challenge for the wide use of zinc–air ***,Co_(2)N nanoparticles(NPs)anchored on N-doped carbon from cattail were verified with excellent catalytic performances for *** onset and half-wave potentials over the optimal catalyst reach to 0.96 V and 0.84 V,*** retention rates of 96.8%after 22-h test and 98.8%after running 1600 s were obtained in 1 M methanol *** functional theory simulation proposes an apparently increased electronic states of Co_(2)N in N-doped carbon layer close to the Fermi *** charge density,favorable adsorption,and charge transfer of intermediates originate from the coexistence of Co_(2)N NPs and N atoms in carbon *** superior catalytic activity of composites also was confirmed in zinc–air *** novel catalytic property and controllable preparation approach of Co_(2)Ncarbon composites provide a promising avenue to fabricate metal-containing catalytically active carbon from biomass.

关键词： catalytically active carbon Co2N nanoparticles N-doping oxygen reduction reaction zinc–air battery

Wood-derived integrated air electrode with Co-N sites for rechargeable zinc-air batteries

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Nano Research 2022年第2期15卷 1415-1423页

作者： Benji Zhou Yanyan Liu xianli wu Huan Liu Tao Liu Yi Wang Sehrish Mehdi Jianchun Jiang Baojun Li Research Center of Green Catalysis College of ChemistryZhengzhou University100 Science RoadZhengzhou 450001China Institute of Chemical Industry of Forest Products CAFNational Engineering Lab for Biomass Chemical UtilizationNanjing 210042China College of Science Henan Agricultural UniversityZhengzhou 450002China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafery National Center for Nanoscience and TechnologyBeijing 100190China Department of Chemistry The Women UniversityKutchery CampusL.M.Q.RoadMultan 66000Pakistan

The sluggish reaction kinetics in oxygen reduction reaction(ORR)is one of the bottlenecks in next generation energy conversion *** integrated design strategy based on simultaneously constructing active sites and forming porous carbon network will address this concern by facilitating charge exchange,mass transfer and electron *** this article,a three-dimensional integrated air electrode(Co-N@ACS)containing Co-N sites and hierarchically porous carbon is fabricated via growth of Co-doped ZIF-8 in activated wood substrate and synchronous *** optimized integrated air electrodes exhibit ultrahigh ORR activity(E_(1/2)=0.86 V).Co-N sites provide outstanding ORR activity,and hierarchically porous structures facilitate oxygen diffusion and electrolyte *** zinc-air battery assembled with Co-N@ACS possesses open-circuit voltage of 1.46 V,peak power density of 155 mW cm^(-2) and long-term stability of 540 cycles(180 h).Solid-state zinc-air battery assembled with Co-N@ACS shows open-circuit voltage up to 1.36 V and low charge-discharge voltage gap(0.8 V).This design strategy paves the way for the conversion of wood biomass to integrated air electrodes and catalytically active carbon for next generation energy storage and conversion devices.

关键词： atomically dispersed Co integrated air electrode oxygen reduction reaction wood biomass zinc-air batteries

Polar O-Co-P Surface for Bimolecular Activation in Catalytic Hydrogen Generation

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Energy & Environmental Materials 2023年第1期6卷 224-233页

作者： Huanhuan Zhang Ke Zhang Saima Ashraf Yanping Fan Shuyan Guan xianli wu Yushan Liu Baozhong Liu Baojun Li Research Center of Green Catalysis College of ChemistryZhengzhou University100 Science RoadZhengzhou 450001China College of Chemistry and Chemical Engineering Henan Polytechnic University2001 Century AvenueJiaozuo 454000China

Boron hydrides release an abundant amount of hydrogen in the presence of a suitable *** bimolecular activation kinetics is the key to designing cost-effective catalysts for borohydride *** this study,the bimolecular activation of a polar O-Co-P site demonstrated superior hydrogen-generation kinetics(turnover frequency,TOF=37 min−1,298 K)and low activation energy(41.0 kJ mol^(−1))close to that of noble-metal-based *** a combination of experiments and theoretical calculations,it was revealed that the activated dangling oxygen atom in the Co–O precursor effectively replaced via surface-phosphorization because of strong electronic interactions between the dangling oxygen and P *** substitution modulated the local coordination environment and electronegativity around the surface Co sites and formed a new polar O-Co-P active site for optimizing the activation kinetics of ammonia borane and *** strategy based on bimolecular activation may create new avenues in the field of catalysis.

关键词： bimolecular activation borohydride hydrolysis hydrogen generation noble-metal-free catalysts polar site

For more and purer hydrogen-the progress and challenges in water gas shift reaction

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能源化学:英文版 2023年第8期83卷 363-396,I0010页

作者： Limin Zhou Yanyan Liu Shuling Liu Huanhuan Zhang xianli wu Ruofan Shen Tao Liu Jie Gao Kang Sun Baojun Li Jianchun Jiang 218 Laboratory for Energy Catalysis Research Center of Green CatalysisCollege of ChemistryZhengzhou UniversityZhengzhou 450001HenanChina Institute of Chemical Industry of Forest Products CAFNational Engineering Lab.for Biomass Chemical UtilizationNanjing 210042JiangsuChina College of Science Henan Agricultural UniversityZhengzhou 450002HenanChina National Center for Nanoscience and Technology Beijing 100190China School of Life Sciences Northwestern Polytech UniversityXi'an 710072ShaanxiChina

The water gas shift(WGS) reaction is a standard reaction that is widely used in industrial hydrogen production and removal of carbon monoxide. The improved catalytic performance of WGS reaction also contributes to ammonia synthesis and other reactions. Advanced catalysts have been developed for both high and low-temperature reactions and are widely used in industry. In recent years, supported metal nanoparticle catalysts have been researched due to their high metal utilization. Low-temperature catalysts have shown promising results, including high selectivity, high shift rates, and higher activity potential. Additionally, significant progress has been made in removing trace CO through the redox reaction in electrolytic cell. This paper reviews the development of WGS reaction catalysts, including the reaction mechanism, catalyst design, and innovative research methods. The catalyst plays a crucial role in the WGS reaction, and this paper provides an instant of catalyst design under different conditions. The progress of catalysts is closely related to the development of advanced characterization ***, modifying the catalyst surface to enhance activity and significantly increase reaction kinetics is a current research direction. This review goals to stimulate a better understanding of catalyst design, performance optimization, and driving mechanisms, leading to further progress in this field.

关键词： Water gas shift reaction Hydrogen production Heterogeneous catalysis Reaction Mechanism Single atomic catalysts

Engineering Vacancy-Atom Ensembles to Boost Catalytic Activity toward Hydrogen Evolution

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Energy & Environmental Materials 2023年第1期6卷 325-332页

作者： Ruofan Shen Yanyan Liu Hao Wen xianli wu Zhikun Peng Sehrish Mehdi Tao Liu Huanhuan Zhang Shuyan Guan Erjun Liang Baojun Li School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Research Center of Green Catalysis College of ChemistryZhengzhou UniversityZhengzhou 450001China College of Science Henan Agricultural UniversityZhengzhou 450002China Department of Chemistry The Women UniversityKutchery CampusMultan 66000Pakistan CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and TechnologyBeijing 100190China

The dissociation of water is the rate-determining step of several energy-relating reactions due to high energy barrier in homolysis of H-O ***,engineering vacancy-atom ensembles via injecting oxygen vacancy(V O)into single facet-exposed TiO_(2)-Pd catalyst to form V_(O)-Pd ensemble is proposed and *** outstanding activity of as-prepared catalyst,1.5-PdTV_(O),toward water dissociation is established with a turnover frequency of 240 min^(−1) in ammonia borane hydrolysis at 298 *** functional theory simulation suggests that the V_(O)-Pd ensemble is responsible for the high intrinsic catalytic *** molecules tend to be dissociated on V_(O) sites and ammonia borane molecules on Pd *** H atoms from water dissociation on V_(O) combine with H atoms from ammonia borane on Pd atoms to generate H_(2).This insights into engineering vacancy-atom ensembles catalysis provide a new avenue to design catalytic materials for important energy chemical reactions.

关键词： ammonia borane hydrogen evolution palladium vacancy-atom ensembles water dissociation

基础化学实验室安全管理改进与探索——以郑州大学化学实验中心为例

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山东化工 2024年第7期53卷 224-225,240页

作者：韩国胜张宇虹武现丽李艳阳张旭东郑州大学化学学院绿色催化研究中心河南郑州450000

近期,国内各高校实验室事故时有发生,忽视安全、对预防工作的重视程度不够是频发事故的主要因素之一。本文结合实验教学实践,分析了基础化学实验室普遍存在的安全问题,给出了改革安全管理方面问题的措施,提出了一系列新方法、新思路,对... 详细信息

近期,国内各高校实验室事故时有发生,忽视安全、对预防工作的重视程度不够是频发事故的主要因素之一。本文结合实验教学实践,分析了基础化学实验室普遍存在的安全问题,给出了改革安全管理方面问题的措施,提出了一系列新方法、新思路,对实验安全管理具有一定的借鉴意义。

关键词：化学实验室化学国家级实验教学示范中心安全教育及管理

Study on relaxation oscillation of Er^(3+)/Yb^(3+) co-doped phosphate glass optical waveguide laser

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Chinese Science Bulletin 2009年第20期54卷 3653-3657页

作者： LIU HuaDong ZHANG XiaoXia wu xianli ZHANG Qin LIU YongZhi School of Optic-Electronic Information University of Electronic Science and Technology of China Chengdu 610054 China

Based on the principle and fabrication of the optical waveguide laser,and through the configuration of the energy level of Er3+/Yb3+ co-doped system,the time-dependent rate equations are formed and then solved by Runge-Kutta *** dynamic characteristic of the waveguide laser pumped unidirec-tionally by 980 nm LD is *** curves of the relaxation oscillation are drawn,showing that the photon number and inverted population vary *** attenuation characteristic of the peak power is *** is gained that time constant changes with pump power,length of waveguide and the reflectivity of output ***,the impact of the above three parameters on the frequency and end-time of relaxation oscillation is *** frequency of relaxation oscillation is propor-tional to the pump *** high reflectivity conditions,the length of waveguide has a weak impact on the *** end-time decreases as the three parameters *** features and results provide a theoretical basis for designing the Er3+/Yb3+ co-doped phosphate optical waveguide laser.

关键词：波导激光器磷酸盐玻璃振荡参数共掺时间依赖振荡频率镱高反射率

Simulation of Countercurrent Multi-Effect Drying System

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Advances in Materials Physics and Chemistry 2012年第4期2卷 206-211页

作者： Hong Li Lianying wu xianli wu Yangdong Hu Department of Chemical Engineering Ocean University of China Qingdao 266000 China

The paper bulids a countercurrent multi-effect drying process model which can be expressed as a linear programming(LP) problem with the minimum total energy consumption as target function. Based on the model it can be conventient to solve the heat load , degree of drying and other drying parameters of each effect. And it realizes the mathematical simulation an analysis of multi-effect drying process. Such process not only reuses the secondary steam but also utilizes the high energy grade. Drying silica sand using 1-effect drying to 5-effect drying is presented as an example. The energy consumption and energy saving rate are compared by using co-current multi-effect drying and countercurrent multi-effect drying. As a summary, the countercurrent multi-effect drying is better than co-current drying. Considered the equipment investment and energy conservation, the study also concluded that the countercurrent 4-effect drying is the optimum selection, and it can save 57.6% energy compared to countercurrent 1-effect drying.

关键词： Countercurrent Drying Multi-Effect Drying Secondary Steam LP

基于T-H图的全过程能量利用系统逐步优化综合策略

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化工学报 2013年第5期64卷 1696-1703页

作者：吴现力伍联营胡仰栋中国海洋大学化学化工学院山东青岛266100

针对大规模复杂过程的能量利用提出了基于T-H图的逐步优化的综合策略。该策略以系统冷、热物流的T-H图为基础,分析系统能量集成的瓶颈和不合理的换热过程,指导系统引入热机、热泵,或进行工艺改进,从而增加或改变冷热物流,使T-H图发生改... 详细信息

针对大规模复杂过程的能量利用提出了基于T-H图的逐步优化的综合策略。该策略以系统冷、热物流的T-H图为基础,分析系统能量集成的瓶颈和不合理的换热过程,指导系统引入热机、热泵,或进行工艺改进,从而增加或改变冷热物流,使T-H图发生改变。如此重复,通过多次改进,逐步调整冷、热物流在T-H图上的相对位置,构造出两条近似平行的冷、热物流曲线,使系统能量得到梯次合理的利用,从而达到最大限度降低系统公用工程消耗量的目的。该策略综合考虑了能量利用、转换环节的改进以及公用工程和工艺过程的有机结合,能够实现全过程能量利用的综合优化。应用这种策略,对甲醇制烯烃的能量利用系统进行了优化设计,结果表明所提策略是有效且简便易行的。

关键词： T-H图能量综合工艺改进热机热泵逐步优化

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互联网+智慧矿山发展方向

煤炭科学技术 2016年第7期44卷 28-33,63页

作者：霍中刚武先利煤炭科学技术研究院有限公司安全装备技术研究分院北京100013 煤炭资源高效开采与洁净利用国家重点实验室北京100013 北京市煤矿安全工程技术研究中心北京100013

针对目前国内智慧矿山还处于起步建设阶段,各个煤矿存在的多系统缺乏统一规范标准,不能及时挖掘大数据潜在价值,大部分矿井没有三维实景综合信息展示平台,不能有效解决实时感知重大灾害的预警预报,有效及时搜救决策等迫切需要解决的问题... 详细信息

针对目前国内智慧矿山还处于起步建设阶段,各个煤矿存在的多系统缺乏统一规范标准,不能及时挖掘大数据潜在价值,大部分矿井没有三维实景综合信息展示平台,不能有效解决实时感知重大灾害的预警预报,有效及时搜救决策等迫切需要解决的问题,讨论了互联网+智慧煤矿的建设应该着重推进综采工作面智慧感知、"一网一站"综合智慧通信、三维实景智慧管理平台、智慧矿山数据挖掘及增值利用等方面的建设内容,并介绍了以山西王坡煤矿为示范工程的智慧矿山建设成效及下一步的发展方向。

关键词：智慧矿山互联网+ 一网一站三维实景数据挖掘增值服务