Fe or Ni Particles at the Tips of Carbon Nanofibers: Highly Active and Stable Catalysts for COx-free

来源 :第十五届全国氢能会议暨第7届两岸三地氢能研讨会 | 被引量 : 0次 | 上传用户:yjfc000
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Catalytic ammonia decomposition to generate COx-free hydrogen enables the hydrogen provision for further applications in energy and environmental industries.Although Ru shows the highest activity among single-metal catalysts,its expense and scarcity encourage the researchers to develop low-cost alternatives or catalysts.
其他文献
本文从不同岩层钻进效率对比和工堪成本组成分析钻头的效率与寿命关系,认为提高钻进效率、降低工勘综合成本是市场对电镀钻头的主要需求,针对极软、软、中软等岩石研磨性不强的地层,可采用单粒度粗颗粒的金刚石,改进电镀工艺,改变胎体结构等方式不断提升电镀钻头的钻进时效。针对坚硬和研磨性适中的地层,可采用金刚石的粗细粒度搭配,改进电镀工艺,增加溶液中钻含量等方式提高胎体镀层的耐磨性和金刚石的出刃率。针对坚硬和研
高压科学与超硬材料总是密不可分的,金刚石以其极高的硬度、高透光性,以及在高温高压等极端条件下的稳定性成为高压装置——金刚石对顶砧压腔(DAC)的重要组成材料。为了满足高压科学研究对大颗粒高质量单晶金刚石的需求,美国卡内基研究院地球物理实验室自21世纪初开始了对采用微波等离子体化学气相沉积法(MPCVD)合成单晶金刚石的研究,十几年来在生长速度,光学质量和机械性能上取得了一系列处于国际前沿的重大突破
会议
针对国内外金刚石拉丝模激光打孔机研究开发现状和金刚石拉丝模加工的技术要求,提出了研制金刚石拉丝模精密激光打孔机的总体设计方案;设计了打孔机的光学系统,实现了激光光束传输、变换系统的两大功能,获得了高功率密度的焦点光斑;采用高强度轻质铝合金材料设计制造了一种新型三轴一体工作台,解决了传统工作台工作时模具容易发生失稳或偏离光路轴心的问题;提出并设计了新型拉丝模自定心旋转夹具,实现了夹持模具、模具旋转以
针对烧结金刚石制品在硬脆材料加工过程中加工性能不稳定的弊病,分析了现有解决这个弊病的3种方法及其不足,提出了还原工艺的应用及整体烧结炉的结构改造思路.通过荧光光谱仪分别测试了未还原的刀头和还原了的刀头氧含量,并进行锯片对比切割635#花岗岩试验.结果表明:还原工艺能大大减少刀头胎体的氧化;与未经过还原处理的金刚石锯片相比,还原处理过的金刚石锯片锋利度平均提高25%以上,且在切割过程中锋利度比较稳定
Because of their compactness and operating convenience,the hydrogen separators and purifiers based on palladium membranes are of great importance for hydrogen energy systems.Compared with the conventi
会议
China is abundant in coal resource and suffering from the heavy pollution caused by coal burning in the air.Supercritical water gasification is a clean and effective method in converting coal with no
会议
In recent years,zinc cadmium sulphide (ZnxCd1-xS) alloy compounds have paid much attention in the fields of opto-electronics,particularly in photocatalyst because of its tunable energy gap and the lat
会议
Proton exchange membrane (PEM) water electrolysis typically operated at 80℃ suffers from high ohmic voltage losses in long term use due to the high proton transport resistanceofthecatalyst layers (CLs
会议
SPE water electrolyzer (SPEWE) has been proven as an efficient solution to convert nowadays great proportion of excess power generated by renewable energy.By dispersed and anchored on the surface of c
会议
One-dimensional anodic titanium oxide nanotube(TONT)arrays provide a direct pathway for charge transport,and thus hold great potential as working electrodes for electrochemical energy conversion and s
会议