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An easy approach to encapsulating Fe 3 O 4 nanoparticles in multiwalled carbon nanotubes

Carbon 2010年第13期48卷 3975-3975页

作者： Jian-hua Li Ruo-yu Hong Guo-hua Luo Ying Zheng Hong-zhong Li Dong-guang Wei Department of Chemical Engineering and Key Laboratory of Organic Synthesis of Jiangsu Province Soochow University Suzhou 215123 China Kailuan Zhongrun Coal Chemical Com. Ltd. Seaport Economic Development Zone Tangshan 063611 China State Key Laboratory of Multiphase Reaction Institute of Process Engineering Chinese Academy of Sciences Beijing 100080 China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical Engineering Tsinghua University Beijing 100084 China Department of Chemical Engineering University of New Brunswick Fredericton Canada Center for Nanoscale System School of Engineering & Applied Science Harvard University 11 Oxford St. Cambridge MA 02139 USA

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Room‐Temperature Activation of H2by a Surface Frustrated Lewis Pair

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Angewandte Chemie 2019年第28期131卷

作者： Lu Wang Tingjiang Yan Rui Song Wei Sun Yuchan Dong Jiuli Guo Zizhong Zhang Xuxu Wang Geoffrey A. Ozin Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S3H6 Canada College of Chemistry and Chemical Engineering Qufu Normal University Qufu Shandong 273165 P. R. China International Research Center for Renewable Energy & State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shanxi 710049 P. R. China Department of Chemistry Nankai University Tianjin 300071 P. R. China State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P. R. China

Surface frustrated Lewis pairs (SFLPs) have been implicated in the gas‐phase heterogeneous (photo)catalytic hydrogenation of CO 2 to CO and CH 3 OH by In 2 O 3− x (OH) y . A key step in the reaction pathway is envisioned to be the heterolysis of H 2 on a proximal Lewis acid–Lewis base pair, the SFLP, the chemistry of which is described as In⋅⋅⋅In‐OH + H 2 → In‐OH 2 + ⋅⋅⋅In‐H − . The product of the heterolysis, thought to be a protonated hydroxide Lewis base In‐OH 2 + and a hydride coordinated Lewis acid In‐H − , can react with CO 2 to form either CO or CH 3 OH. While the experimental and theoretical evidence is compelling for heterolysis of H 2 on the SFLP, all conclusions derive from indirect proof, and direct observation remains lacking. Unexpectedly, we have discovered rhombohedral In 2 O 3− x (OH) y can enable dissociation of H 2 at room temperature, which allows its direct observation by several analytical techniques. The collected analytical results lean towards the heterolysis rather than the homolysis reaction pathway.

关键词： Gasphasenreaktionen Heterolytische H2-Dissoziation Indiumoxid Oberflächenchemie Oberflächenfrustriertes Lewis-Paar

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Cobalt Nanoskeletons: One‐Pot Solution Synthesis of Cubic Cobalt Nanoskeletons (Adv. Mater. 16/2009)

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Advanced Materials 2009年第16期21卷

作者： Xi Wang Hongbing Fu Aidong Peng Tianyou Zhai Ying Ma Fangli Yuan Jiannian Yao Beijing National Laboratory for Molecular Science Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P.R. China) Graduate School of the Chinese Academy of Sciences Beijing 100049 (P.R. China) State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 (P.R. China)

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Coagulation of Chitin and Cellulose from 1‐Ethyl‐3‐methylimidazolium Acetate Ionic‐Liquid Solutions Using Carbon Dioxide†

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Angewandte Chemie 2013年第47期125卷

作者： Patrick S. Barber Chris S. Griggs Gabriela Gurau Zhen Liu Shan Li Zengxi Li Xingmei Lu Suojiang Zhang Robin D. Rogers Center for Green Manufacturing and Department of Chemistry The University of Alabama Tuscaloosa AL 35487 (USA) U.S. Army ERDC Environmental Laboratory Vicksburg MS 39180 (USA) College of Chemistry and Chemical Engineering Graduate University of Chinese Academy of Sciences Beijing 100049 (China) State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Graduate University of Chinese Academy of Sciences Beijing 100190 (China)

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Dynamics and energy harvesting of a flow-induced snapping sheet with nonuniform stiffness distribution

International Journal of Fluid Engineering

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International Journal of Fluid engineering 2024年第4期1卷 44-55页

作者： Zhaokun Wang Jingyu Cui Fuwang Zhao M.N.Mumtaz Qadri Yuanye Zhou Hui Tang Department of Mechanical Engineering The Hong Kong Polytechnic UniversityKowloonHong KongChina School of Fashion and Textiles The Hong Kong Polytechnic UniversityKowloonHong KongChina Zhejiang Key Laboratory of Multiphase Flow and Fluid Machinery Zhejiang Sci-Tech UniversityHangzhou 310018China Department of Aerospace Engineering School of Mechanical and Manufacturing EngineeringNUSTIslamabad 44000Pakistan Shenzhen Research Institute of Shandong University A301 Virtual University Park in South District of ShenzhenShenzhenChina

Energy harvesting through periodic snap-through of a buckled sheet has recently gained considerable attention because of its potential applications in energy harvesting in low incoming *** the snapping dynamics of uniform buckled sheets has been extensively studied,the present work focuses on the energy harvesting and dynamics of a nonuniform snapping sheet with both of its ends clamped in a channel *** analysis reveals that the sheet undergoes periodic snap-through oscillations,with its rear half consistently serving as the main contributor to effective energy harvesting,and the potential energy contributing significantly more than the kinetic *** the stiffness differenceΔEI^(*)shows that increasing the stiffness of the rear part and decreasing that of the fore part shifts the deformation wave toward upstream and enhances the snapping amplitude of the fore part,optimizing energy *** a length compression ratioΔL^(*)=0.3,the maximum potential energy is observed forΔEI^(*)=1,and the total energy peaks atΔEI^(*)=*** study also identifies an optimalΔL^(*)=0.4that maximizes both total and potential energies,and triples the potential energy in comparison withΔL^(*)=***,the enhancement of nonuniformity disappears atΔL^(*)>0.3 for the total energy andΔL^(*)>0.2 for the potential *** findings provide insights to aid optimization of the design and performance of snapping sheet energy harvesters.

关键词： stiffness energy harvesting

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科学的时代特征——应对全球挑战中转变范式（英文）

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engineering 2022年第12期 22-23页

作者：董超李静海 Daya Reddy National Natural Science Foundation of China State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences University of Cape Town

Whether the goal is to meet global challenges or to enable a paradigm shift, it is always essential for science to move beyond conventional thinking. Moreover, the mutually beneficial interactions between global challenges and paradigm shifts require a great deal of effort. To this end, it is imperative for the scientific

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Inside Back Cover: Volume 2 Issue 2

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SmartMat 2021年第2期2卷

作者： Niuwa Yang Dong Chen Penglei Cui Tingyu Lu Hui Liu Chaoquan Hu Lin Xu Jun Yang State Key Laboratory of Multiphase Complex Systems Chinese Academy of Sciences Beijing China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China Nanjing IPE Institute of Green Manufacturing Industry Nanjing Jiangsu China Jiangsu Key Laboratory of New Power Batteries School of Chemistry and Materials Science Nanjing Normal University Nanjing Jiangsu China Lin Xu School of Chemistry and Materials Science Jiangsu Key Laboratory of New Power Batteries Nanjing Normal University Nanjing 210023 Jiangsu China.

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Hard‐Sphere Random Close‐Packed Au47Cd2(TBBT)31Nanoclusters with a Faradaic Efficiency of Up to 96 % for Electrocatalytic CO2Reduction to CO

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Angewandte Chemie 2019年第8期132卷

作者： Shengli Zhuang Dong Chen Lingwen Liao Yan Zhao Nan Xia Wenhao Zhang Chengming Wang Jun Yang Zhikun Wu Key Laboratory of Materials Physics Anhui Key Laboratory of Nanomaterials and Nanotechnology CAS Center for Excellence in Nanoscience Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 P. R. China Institute of Physical Science and Information Technology Anhui University Hefei Anhui 230601 P. R. China State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 P. R. China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 P. R. China

Metal nanoclusters have recently attracted considerable attention, not only because of their special size range but also because of their well‐defined compositions and structures. However, subtly tailoring the compositions and structures of metal nanoclusters for potential applications remains challenging. Now, a two‐phase anti‐galvanic reduction (AGR) method is presented for precisely tailoring Au 44 (TBBT) 28 to produce Au 47 Cd 2 (TBBT) 31 nanoclusters with a hard‐sphere random close‐packed structure, exhibiting Faradaic efficiencies of up to 96 % at −0.57 V for the electrocatalytic reduction of CO 2 to CO.

关键词： Cadmium CO2-Reduktion Elektrokatalyse Gold-Nanocluster Antigalvanische Reduktion

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Elucidating Confinement and Microenvironment of Ru Clusters Stably Confined in MFI Zeolite for Efficient Propane Oxidation

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Angewandte Chemie 2024年第5期137卷

作者： Jingjing Wang Dr. Zeyu Jiang Hengyue Xu Prof. Xinzhe Li Dr. Yanfei Jian Dr. Lianghui Xia Dr. Pei Su Qiyuan Liu Prof. Shouning Chai Dr. Mudi Ma Dr. Abdallah Amedlous Dr. Mathias Barreau Prof. Zhengping Hao Prof. Jiaguo Yu Prof. Chi He State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an 710049 Shaanxi P.R. China Laboratoire Catalyse & Spectrochimie Normandie Univ ENSICAEN UNICAEN CNRS Caen 14000 France Department of Chemistry Tsinghua University Beijing 100084 P.R. China College of Environmental and Chemical Engineering Yanshan University Qinhuangdao 066004 P.R. China National Engineering Laboratory for VOCs Pollution Control Material & Technology University of Chinese Academy of Sciences Beijing 101408 P.R. China Laboratory of Solar Fuel Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 430078 P.R. China

Achieving active and stable heterogeneous catalysts by encapsulating noble metal species within zeolites is highly promising for high utilization and cost efficiency in thermal and environmental catalytic reactions. Ru, considered an economical noble metal alternative with comparable performance, faces great challenges within MFI-type microporous zeolites due to its high cohesive energy and mobility. Herein, an innovative strategy was explored that couples hydrothermal in situ ligand protection with stepwise calcination in a flowing atmosphere to embed ultrasmall Ru clusters anchored at K + -healed silanol sites (≡Si−Ru δ+ −O−K complexes) within 10-membered ring sinusoidal channels of MFI. Comprehensive experiments and theoretical calculations unveiled that the interplay between confined Ru clusters and MFI induces local strain in MFI, creating a unique catalytic microenvironment around the Ru clusters. This synergy interaction enhances alkane deep oxidation as the confined Ru clusters and the MFI microenvironment collectively pre-activate C 3 H 8 and O 2 , facilitate the cleavage of C−H and C−C bonds at low temperatures. Notably, the stable geometric and electronic properties of the confined Ru show exceptional thermal stability up to 1000 °C, rivaling fresh catalysts. These findings shed vital methodological and mechanistic insights for developing efficacious heterogeneous catalysts for thermal catalysis.

关键词： heterogeneous catalysis microenvironment Ruthenium strain zeolite

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flow behaviors of shale oil in kerogen slit by molecular dynamics simulation

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Chemical engineering Journal 2022年 434卷

作者： Jie Liu Yongfei Yang Shuyu Sun Jun Yao Jianlong Kou Physical Science and Engineering Division (PSE) Computational Transport Phenomena Laboratory King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia Key Laboratory of Unconventional Oil & Gas Development (China University of Petroleum (East China)) Ministry of Education Qingdao 266580 PR China Research Center of Multiphase Flow in Porous Media School of Petroleum Engineering China University of Petroleum (East China) Qingdao 266580 PR China Institute of Condensed Matter Physics Zhejiang Normal University Jinhua 321004 PR China

In the last decades, shale oil, mainly distributed in the nanopores of shale, has been considered as the representative of unconventional energy to alleviate the energy crisis. But the ideal pore models greatly overestimate the flowing capability of shale oil. To get more accurate and reasonable flow behavior, the multicomponent shale oil in the realistic kerogen channel is studied by using molecular dynamic simulation. Both density and velocity distributions that along and perpendicular to the flow direction are studied in kerogen channel, where the influence of branch chain of kerogen is also took into consideration. The heavy component tends to form the adsorbed layers on the kerogen wall, as a result of the extremely strong affinity between kerogen and hydrocarbons, and some asphaltene molecules in bulk phase form the cluster in middle of slit. On the flow direction, the velocity profile preforms the peristaltic behavior due to the effect of branch chain of kerogen, and the toluene and asphaltene components contribute it mostly. According to the heterogeneous characteristics of shale oil flow, we define the fictitious slip boundary, which corresponds to the boundary between bulk phase and adsorbed phase, to describe shale oil flow precisely. We also examine the effects of driving pressure gradient, temperature and pore size on the flow behaviors. The enhancements of driving force and temperature both facilitate shale oil flow, and the maximum velocity reaches the stable value within larger kerogen pores. The potential energy distribution and the interaction force contour verified the peristaltic flow behavior and the validity of fictitious slip boundary.

关键词： Shale oil Kerogen flow behavior Molecular simulation

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