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《化学科学与工程前沿(英文)》 2021年 第15卷 第6期 页码 1500-1513 doi: 10.1007/s11705-021-2086-2
关键词: in-situ carbon-doped surface unsaturated sulfur enriched pseudocapacitive energy storage biomass-derived carbon lithium-ion capacitors
Polyolefin-nanocomposites with special properties by in-situ polymerization
Walter Kaminsky
《化学科学与工程前沿(英文)》 2018年 第12卷 第3期 页码 555-563 doi: 10.1007/s11705-018-1715-x
Exceptionally strong polyolefin nanocomposites are synthesized by in-situ polymerization using soluble metallocene/methylaluminoxane (MAO) as catalysts in a two-step process. First, the soluble metallocene/MAO or other single site catalysts are absorbed on the surface of the nanofillers. Then by addition of ethene or propene, a polyolefin film is formed, covering the nanoparticles, layered silicates, or fibers. The resulting polyethylene and polypropylene nanocomposites are characterized by better physical and chemical properties such as stiffness, gas barrier properties, degradation temperatures, and crystallization rates. They show better mechanical properties than materials produced by mechanical blending. The thickness of the polyolefin can be controlled by the pressure of ethene or propene and by the polymerization time. Carbon fibers and carbon nanotubes are covered with isotactic or syndiotactic polypropylene. Because of the hydrophobic character of the carbon surface, the polymer is drawn on the fiber. This leads to a reinforced combined polymer with special properties. The crystallization temperature is 10 °C higher and therefore the crystallization rate up to 20 times faster than that of pure syndiotactic polypropylene. The form stability increases by 100% if 3 wt-% of carbon nanotubes are incorporated.
关键词: polyolefin nanocomposites metallocenes methylaluminoxane
《化学科学与工程前沿(英文)》 2022年 第16卷 第12期 页码 1807-1817 doi: 10.1007/s11705-022-2243-2
关键词: Ru/C catalyst in-situ H2 reduction and moderate oxidation in-situ reduction non-in-situ reduction hydrogenation of 3 5-dimethylpyridine
《化学科学与工程前沿(英文)》 2023年 第17卷 第2期 页码 139-155 doi: 10.1007/s11705-022-2217-4
关键词: extended Stöber method carbon encapsulated Ni–Sn intermetallic compounds confinement in-situ hydrothermal deoxygenation hydrogenation decarbonylation
《化学科学与工程前沿(英文)》 2022年 第16卷 第3期 页码 443-460 doi: 10.1007/s11705-021-2079-1
关键词: Stöber method carbon-coated Ni-Co alloy in-situ hydrodeoxygenation methyl palmitate decarbonylation/decarboxylation
梁健臻,冯景春,张卉,张偲
《中国工程科学》 2024年 第26卷 第2期 页码 23-37 doi: 10.15302/J-SSCAE-2024.02.004
深海孕育了世界上最大的生态系统,对深海相关演变规律的深刻认知将支撑人类社会的可持续发展;深海极端环境条件决定了开展原位实验作业非常困难,也对深海科学实验装备提出了苛刻的要求。本文从深海科学实验研究的视角出发,按照深海试验装备及试验场、深海原位探测与实验装备、深海环境模拟实验装备的主要划分,系统梳理了国内外深海科学实验装备的发展态势和面临的问题。我国在深海科学实验装备领域已形成了一批自主研发的装备技术,推动了深海科学研究进步,部分优势方向已跻身国际先进水平;但在高精尖装备及其关键核心技术方面未能构建成熟的产业链,导致部分装备发展受限、一些技术薄弱环节凸显。需要加强顶层谋划、协调技术攻关,建立激励机制、推动创新转化,建设示范平台、形成标准体系,突破传感技术、加快国产进程,加强国际合作、提升创新能力,以深海科学实验装备高质量发展推动深海科学研究和海洋强国建设。
In-situ condition monitoring of reinforced concrete structures
Sanjeev Kumar VERMA,Sudhir Singh BHADAURIA,Saleem AKHTAR
《结构与土木工程前沿(英文)》 2016年 第10卷 第4期 页码 420-437 doi: 10.1007/s11709-016-0336-z
关键词: concrete carbonation chloride corrosion monitoring models
《环境科学与工程前沿(英文)》 2022年 第16卷 第5期 doi: 10.1007/s11783-021-1491-6
• A high-efficiency N-doped porous carbon adsorbent for Cr(VI) was synthesized.
关键词: Chromium(VI) Nitrogen-doped porous carbon Adsorption Reduction Loofah sponge
Kun OUYANG, Yu HUANG, Haoyi CHEN, Tao LI, Fahai CAO, Dingye FANG
《化学科学与工程前沿(英文)》 2011年 第5卷 第1期 页码 67-73 doi: 10.1007/s11705-010-0541-6
关键词: glycerol aqueous-phase reforming 1 3-propanediol in-situ reduction
Phosphorus-doped Ni–Co sulfides connected by carbon nanotubes for flexible hybrid supercapacitor
《化学科学与工程前沿(英文)》 2023年 第17卷 第5期 页码 491-503 doi: 10.1007/s11705-022-2257-9
关键词: cobalt nickel sulfide phosphorus-doping hybrid supercapacitor carbon nanotube density functional theory
density measurement for plastic injection molding via ultrasonic technology
《机械工程前沿(英文)》 2022年 第17卷 第4期 doi: 10.1007/s11465-022-0714-2
关键词: ultrasonic measurement melt density in-situ measurement injection molding
Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for
《化学科学与工程前沿(英文)》 2023年 第17卷 第11期 页码 1788-1800 doi: 10.1007/s11705-023-2326-8
关键词: carbon nanospheres size-controlled nitrogen-doped high-rate supercapacitors
Wei Wang, Haijun Lv, Juan Du, Aibing Chen
《化学科学与工程前沿(英文)》 2021年 第15卷 第5期 页码 1312-1321 doi: 10.1007/s11705-020-2033-7
关键词: carbon nanobelts polypyrrole N-doped confined pyrolysis supercapacitor
A novel six-legged walking machine tool for
Jimu LIU, Yuan TIAN, Feng GAO
《机械工程前沿(英文)》 2020年 第15卷 第3期 页码 351-364 doi: 10.1007/s11465-020-0594-2
关键词: legged robot parallel mechanism mobile machine tool in-situ machining
《化学科学与工程前沿(英文)》 2022年 第16卷 第9期 页码 1367-1376 doi: 10.1007/s11705-022-2153-3
关键词: metal phosphonate cobalt/nickel phosphide N-doped carbon oxygen electrochemistry Zn−air battery
标题 作者 时间 类型 操作
Carbon-doped surface unsaturated sulfur enriched CoS@rGO aerogel pseudocapacitive anode and biomass-derivedporous carbon cathode for advanced lithium-ion capacitors
期刊论文
Development of an H reduction and moderate oxidation method for 3,5-dimethylpyridine hydrogenation in trickle bed reactor
期刊论文
Efficient hydrothermal deoxygenation of methyl palmitate to diesel-like hydrocarbons on carbon encapsulated
期刊论文
Carbon-coated Ni-Co alloy catalysts: preparation and performance for aqueous phase hydrodeoxygenation
期刊论文
In-situ condition monitoring of reinforced concrete structures
Sanjeev Kumar VERMA,Sudhir Singh BHADAURIA,Saleem AKHTAR
期刊论文
Concurrent adsorption and reduction of chromium(VI) to chromium(III) using nitrogen-doped porous carbon
期刊论文
Thermodynamic analysis of liquid phase in situ hydrogenation of glycerol for 1,3-propanediol synthesis
Kun OUYANG, Yu HUANG, Haoyi CHEN, Tao LI, Fahai CAO, Dingye FANG
期刊论文
Phosphorus-doped Ni–Co sulfides connected by carbon nanotubes for flexible hybrid supercapacitor
期刊论文
Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for
期刊论文
Fabrication of N-doped carbon nanobelts from a polypyrrole tube by confined pyrolysis for supercapacitors
Wei Wang, Haijun Lv, Juan Du, Aibing Chen
期刊论文