Results 21 to 30 of about 564,955 (175)
氢能作为能够与核能高效耦合、优势互补的重要储能形式,在多能互补系统中具备突出的应用潜力与发展价值。针对风机与光伏发电出力波动性和间歇性及多能互补系统中各单元运行难以协调控制的问题,构建了基于可逆固体氧化物电池(Reversible Solid Oxide Cells,RSOC)的风光氢储一体化系统,依托MATLAB/Simulink平台搭建了光伏、风机、RSOC与蓄电池等核心单元的数学模型,并结合各单元运行特性设计了不同的控制策略。基于实测风速与光辐照度数据开展仿真分析 ...
钱 昕瑶 +5 more
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在MP2/ SMD/6-311++g(3df,2pd)//WB97X-D/SMD/6-311++G(d,p)理论水平上,研究了水液相环境下羟自由基诱导的苯丙氨酸分子的损伤机理。研究发现,羟自由基(水分子簇) 抽取α-氢、β-氢、苯环-氢以及羟自由基与苯环加成均可致苯丙氨酸分子损伤。势能面计算表明,羟自由基(水分子簇) 抽取α-氢和β-氢的最低能垒分别为68.4 和89.3 kJ·mol-1,羟自由基抽取苯环-氢的最低能垒为111.6 kJ·mol-1,羟自由基加成到苯环不同位点碳的能垒大约在106.5 ...
PANYu(潘宇) +6 more
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分别采用共沉淀法和溶胶凝胶法制备了具有高水热稳定性的Ce0.5M0.5O2 (M=Zr,Ti)载体,并通过浸渍法制得高分散Pt/Ce0.5M0.5O2(M=Zr,Ti)催化剂,分析了短链脂肪醇作为氢供体用于香兰素加氢脱氧反应的催化性能.实验结果表明,复合氧化物催化剂Pt/Ce0.5M0.5O2(M=Zr,Ti)具有高的水热稳定性和优良的加氢脱氧活性,且Pt/Ce0.5Zr0.5O2较Pt/Ce0.5Ti0.5O2的催化性能更胜一筹,催化剂的加氢脱氧性能与其表面的酸性质以及贵金属Pt在载体上的高度分散有关.
CHANGAo(常傲) +3 more
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ABSTRACT Engineering of the catalyst interface and modulation of transition–metal d–band play critical roles in the electrocatalytic hydrogen evolution reaction (HER). Herein, a synthetic strategy is developed to fabricate nitrogen‐doped carbon nanotubes (N–CNTs)–supported Ni3Se4–CeO2 heterojunction catalysts through a facile chemical vapor deposition (
Zhiqiang Sun +10 more
wiley +1 more source
ABSTRACT Cross‐scale assembly of metal (sub) nanoparticles and/or single atoms into millimeter/nanostructured metal monolithic catalysts (Min‐SMCs) is highly appealing for sustainable water cleanup, due to energy‐efficient catalyst recyclability, high infrastructure compatibility, and low metal‐releasing risks.
Jia‐Cheng E. Yang +4 more
wiley +1 more source
采用密度泛函理论的B3LYP 方法、微扰理论的MP2 方法和自洽反应场(SCRF) 理论的SMD 模型方法,研究了水环境下羧基与氨基间为单氢键的α-Ala 旋光异构及羟自由基和氢氧根作用的反应。研究发现:α- Ala 的旋光异构可在a 和b 两个通道实现,a 通道为羧基顺反异构后,水分子簇作媒介质子以氨基为桥从α 碳的一侧向另一侧迁移;b 通道为水分子簇作媒介,质子从α 碳向氨基氮的迁移与羧基顺反异构协同进行。在a 通道,羟自由基水分子簇可致α-Ala 损伤。势能面计算表明:水环境下,在a 通道3 ...
YANHongyan(闫红彦) +3 more
doaj +1 more source
为解决含甘油解猪油的食品在贮藏过程中易被氧化的问题,向甘油解猪油中加入二氢槲皮素,制备负载二氢槲皮素的甘油解猪油微乳液,通过体外模型测定该微乳液的还原力以及对DPPH、ABTS和羟自由基的清除能力,探讨含二氢槲皮素甘油解猪油微乳液的体外抗氧化性,同时通过体外模拟胃肠消化测定其消化性。结果表明:该微乳液具有一定的还原力及DPPH、ABTS、羟自由基的清除能力,且还原力及自由基清除能力均随着二氢槲皮素负载量的增加而升高,相关性显著;该微乳液经胃消化2 h后二氢槲皮素的保留率为79.25 ...
李杨,刘丽美,唐志国,马丽媛,刘东琦,张雨迪 LI Yang,LIU Limei,TANG Zhiguo,MA Liyuan,LIU Dongqi,ZHANG Yudi
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ABSTRACT Semiconductor photocatalysis represents a pivotal frontier in the quest for sustainable energy and environmental remediation. Among the diverse catalytic materials, Bismuth Oxychloride (BiOCl) has emerged as a particularly promising candidate due to its unique layered structure, featuring [Bi2O2]2+ layers intertwined with halogen ions, which ...
Liu Han +5 more
wiley +1 more source
Emerging MBenes for Energy Technologies
ABSTRACT The escalating global demand for sustainable energy is driving the search for transformative materials that transcend the limitations of conventional systems. Two‐dimensional (2D) transition metal borides (MBenes) have recently emerged as a compelling class, distinguished by unique electronic structures, tunable surface chemistry, and ...
Yingrui Ding +5 more
wiley +1 more source
ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang +7 more
wiley +1 more source

