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Cu(In 4

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甘肃金川铜镍(铂)硫化物矿床岩浆通道前进方向探讨

刘美玉,苏尚国,宋晨,蔡楠

《中国工程科学》 2015年 第17卷 第2期   页码 73-84

摘要: 整体说来,自西向东,Pd/Ir-Ni/Cu在各矿体间呈递减趋势,分析认为造成这种规律的原因是矿石的形成经历了单硫化物固溶体(MSS)的分离结晶作用。

关键词: 金川;Cu-Ni-PGE);硫化物矿床;岩浆通道成矿系统;前进方向;定量化结构分析    

中国铜镍(铂族)岩浆硫化物矿床主要成矿构造背景

钱壮志,段俊,冯延清,徐刚,张江江

《中国工程科学》 2015年 第17卷 第2期   页码 19-28

摘要:

本文基于中国铜镍(铂族)岩浆硫化物矿床区域分布和找矿新进展及新的研究资料,对中国该类矿床的主要成矿构造背景进行总结研究,归纳出大火成岩省、克拉通边缘裂谷或陆内拉张环境、造山带碰撞后伸展环境和活动大陆边缘或岛弧4类重要成矿构造背景,与世界上该类矿床成矿构造背景比照,中国尚缺绿岩带、蛇绿岩带等构造背景的矿床实例。另外,中国的造山带碰撞后伸展环境大规模成矿也是世界上罕见的。由此,今后找矿勘查部署上应充分考虑上述4类成矿构造背景中的小岩体。

关键词: 铜镍(铂族);岩浆硫化物矿床;成矿构造背景;主要类型;中国    

Catalytic hydrolysis of gaseous HCN over CuNi/γ-Al

Linxia Yan, Senlin Tian, Jian Zhou, Xin Yuan

《环境科学与工程前沿(英文)》 2016年 第10卷 第6期 doi: 10.1007/s11783-016-0872-8

摘要: ? The Cu–Ni/γ-Al O catalyst was prepared to study HCN hydrolysis ? On catalyst calcined at 400°C, the HCN removal efficiency reaches a maximum. ? HCN removal is the highest at 480 min at a H O/HCN volume ratio of 150 ? The presence of CO facilitates HCN hydrolysis and increases NH production. ? O increases the HCN removal and NO production but decreases NH production GRAPHIC ABSTRACT To decompose efficiently hydrogen cyanide (HCN) in exhaust gas, g-Al O -supported bimetallic-based Cu–Ni catalyst was prepared by incipient-wetness impregnation method. The effects of the calcination temperature, H O/HCN volume ratio, reaction temperature, and the presence of CO or O on the HCN removal efficiency on the Cu–Ni/g-Al O catalyst were investigated. To examine further the efficiency of HCN hydrolysis, degradation products were analyzed. The results indicate that the HCN removal efficiency increases and then decreases with increasing calcination temperature and H O/HCN volume ratio. On catalyst calcined at 400°C, the efficiency reaches a maximum close to 99% at 480 min at a H O/HCN volume ratio of 150. The HCN removal efficiency increases with increasing reaction temperature within the range of 100°C–500°C and reaches a maximum at 500°C. This trend may be attributed to the endothermicity of HCN hydrolysis; increasing the temperature favors HCN hydrolysis. However, the removal efficiencies increases very few at 500°C compared with that at 400°C. To conserve energy in industrial operations, 400°C is deemed as the optimal reaction temperature. The presence of CO facilitates HCN hydrolysis andincreases NH production. O substantially increases the HCN removal efficiency and NO production but decreases NH production.

关键词: Hydrogen cyanide     Cu–Ni/g-Al2O3     Catalytic hydrolysis    

岩浆镍铜铂族矿床成矿过程中流体的作用——对小岩体超大型矿床的启示

张铭杰,汤庆艳,李文渊、余明、胡沛青、李建平

《中国工程科学》 2015年 第17卷 第2期   页码 40-49

摘要:

超大型岩浆镍、铂族元素(PGE)硫化物矿床控制了Ni-PGE的资源量,本文根据地幔岩浆事件中NiCuPGE等在部分熔融、岩浆结晶和硫化物熔离过程的行为,讨论了岩浆Ni-Cu-PGE硫化物矿床的成矿岩浆类型与规模认为地幔大规模的高度部分熔融(即要求高Mg岩浆)促使地幔硫化物及橄榄石中巨量的NiPGE进入岩浆,硫化物熔离富集成矿金属形成大型层状(或通道)岩体赋存的超大型Ni-Cu-PGE硫化物矿床;地幔超临界流体可能大范围内搬运聚集大量Ni-PGE金属元素,对岩浆硫化物矿床成矿可能有重要贡献,是小规模岩浆(小岩体)成矿的可能机制。

关键词: 流体;小岩体;成矿作用    

Ni-Ti-Cu-V四元薄膜库中微观结构和相变的组合合成和高通量表征 Article

Naila M. Al Hasan, Huilong Hou, Suchismita Sarkar, Sigurd Thienhaus, Apurva Mehta, Alfred Ludwig, Ichiro Takeuchi

《工程(英文)》 2020年 第6卷 第6期   页码 637-643 doi: 10.1016/j.eng.2020.05.003

摘要:

过去70年来,基于Ni-Ti的形状记忆合金(shape memory alloy, SMA)已得到广泛使用,但是提高 其功能稳定性仍然是实现更稳健和更高级应用的关键。本研究采用磁控溅射的方法,在热氧化的硅晶片上制备了具有成分分布的Ni-TiCu-V薄膜库。使用高通量波长色散光谱、同步加速器X射线衍射和温度相关的电阻,测量研究并 确定了成分相关的相变温度和微观结构。

关键词: Ni–Ti–Cu–V合金     组合材料科学     四元合金     形状记忆合金     薄膜库     弹性冷却     热弹性冷却     相变     高通量表征     属性映射     机器学习    

东天山地区铜镍矿找矿评价指标探讨

刘欢,焦建刚,张国鹏、高栋、邵乐奇

《中国工程科学》 2015年 第17卷 第2期   页码 106-112

摘要:

岩浆铜镍硫化物矿床主要赋存在镁铁-超镁铁质岩体中,赋矿岩体规模一般较小,矿体主要赋存在岩体的下盘,形成了很多小岩体大矿床的现象。世界上镁铁-超镁铁质岩体很多,如何判定岩体深部是否具有成矿潜力一直是大家关注的焦点。本文在前人大量研究的基础上,以东天山地区为例,对比剖析了成矿与不成矿镁铁-超镁铁质岩体的地质、地球化学特征,试图从理论上判别岩体的成矿潜力。提出成矿的超镁铁质岩体一般具有明显右倾的稀土配分曲线,岩体属于多期岩浆侵入形成,岩石中含一定量的斜方辉石,造岩矿物颗粒大小具有明显变化等找矿评价指标

关键词: 铜镍硫化物矿床;找矿评价指标;东天山    

Zr66Al9Cu16Ni9块体非晶合金制备工艺研究

阮许平,阮宏伟

《中国工程科学》 2004年 第6卷 第5期   页码 76-78

摘要:

运用真空电弧炉熔炼合金制备试样,采用三种不同的方法对金属熔体进行处理,试样的X射线衍射晶化相分析结果表明,B2O3和Na2SiO3的混合物与所选组分的熔体发生了反应,不适合作Zr基合金的包裹物;组分为CaF2(45%),AlF3(50%),CaO(5%)以及微量的TiO2的氟盐,由于该净化剂与所选的组分发生了反应,不适合Zr基合金的净化;设备的高真空度、原材料成分的高纯度是促进合金形成非晶态的重要因素。

关键词: 块体非晶合金     制备工艺     玻璃     熔盐     真空度    

小岩体成大矿的理论与找矿实践意义——以西北地区岩浆铜镍硫化物矿床为例

李文渊,张照伟,陈博

《中国工程科学》 2015年 第17卷 第2期   页码 29-34

摘要:

汤中立院士提出的“小岩体成大矿”理论,是基于对与镁铁-超镁铁质侵入岩有关的岩浆铜镍硫化物矿床长期调查研究得出的概括性成矿认识总结。一经提出即得到了国内外勘查界的普遍响应,大量的矿床勘查实践,有力地证明了浅成的较小体积的侵入岩却往往形成了较大规模金属储量的矿床。本文主要通过对西北地区与镁铁-超镁铁岩有关的岩浆铜镍硫化物矿床成矿作用的研究,对“小岩体成大矿”的成因进行深入探讨,认为幔源岩浆深部熔离-贯入作用,是形成小岩体成大矿的主要机理。国外提出的“岩浆通道”说,可以导致成矿的局部富集,与小岩体成大矿的机理认识是一致的。通过对西北地区大量岩浆铜镍硫化物矿床找矿事实的总结,进一步丰富了“小岩体成大矿”科学内涵,对指导找矿有重要的现实意义。

关键词: 侵入岩;铜镍硫化物矿床;小岩体成大矿;矿床成因;找矿远景    

喀拉通克与金川铜镍硫化物矿床地质地球化学特征对比及其意义

代俊峰,宫磊,樊立飞,王勇,赵斌斌

《中国工程科学》 2015年 第17卷 第2期   页码 85-96

摘要:

对喀拉通克和金川铜镍硫化物矿床的主、微量元素的含量及其地球化学特征进行分析对比,结合构造环境和岩石系列对岩浆作用和成矿作用进行了研究。喀拉通克岩体的主量元素特征属于拉斑玄武岩系列;富集大离子亲石元素,亏损高场强元素,显示出大陆地壳的特征;稀土元素表现为轻稀土富集,Sr、Nd同位素值指示岩浆源区为亏损的软流圈地幔。金川岩体的主量元素特征属于拉斑玄武岩和大洋中脊玄武岩(MORB)的岩石系列;富集大离子亲石元素,亏损高场强元素,显示地壳物质混染或者源区洋壳俯冲物质的残留;稀土元素表现为轻稀土富集;Sr、Nd同位素值指示岩浆源于富集地幔。运用三维地质建模的手段,对矿床的岩浆通道和深部边部成矿潜力进行了预测,以期对后期的找矿有所帮助。

关键词: 岩浆铜镍硫化物矿床;岩浆源区;地壳混染;微量元素;岩石系列;三维地质建模;喀拉通克;金川    

Selective recovery of Cu

Haiping LUO,Bangyu QIN,Guangli LIU,Renduo ZHANG,Yabo TANG,Yanping HOU

《环境科学与工程前沿(英文)》 2015年 第9卷 第3期   页码 522-527 doi: 10.1007/s11783-014-0633-5

摘要: As the bioelectrochemical system, the microbial fuel cell (MFC) and the microbial electrolysis cell (MEC) were developed to selectively recover Cu and Ni ions from wastewater. The wastewater was treated in the cathode chambers of the system, in which Cu and Ni ions were removed by using the MFC and the MEC, respectively. At an initial Cu concentration of 500 mg·L , removal efficiencies of Cu increased from 97.0%±1.8% to 99.0%±0.3% with the initial Ni concentrations from 250 to 1000 mg·L , and maximum power densities increased from 3.1±0.5 to 5.4±0.6 W·m . The Ni removal mass in the MEC increased from 6.8±0.2 to 20.5±1.5 mg with the increase of Ni concentrations. At an initial Ni concentration of 500 mg·L , Cu removal efficiencies decreased from 99.1%±0.3% to 74.2%±3.8% with the initial Cu concentrations from 250 to 1000 mg·L , and maximum power densities increased from 3.0±0.1 to 6.3±1.2 W·m . Subsequently, the Ni removal efficiencies decreased from 96.9%±3.1% to 73.3%±5.4%. The results clearly demonstrated the feasibility of selective recovery of Cu and Ni from the wastewater using the bioelectrochemical system.

关键词: bioelectrochemical system     Cu2+     Ni2+     selective recovery    

Preparation of Cu/ZrO

Xinmei LIU, Shaofen BAI, Huidong ZHUANG, Zifeng YAN

《化学科学与工程前沿(英文)》 2012年 第6卷 第1期   页码 47-52 doi: 10.1007/s11705-011-1170-4

摘要: Cu/ZrO catalysts for methanol synthesis from CO /H were respectively prepared by deposition coprecipitation (DP) and solid state reaction (SR) methods. There is an intimate interaction between copper and zirconia, which strongly affects the reduction property and catalytic performance of the catalysts. The stronger the interaction, the lower the reduction temperature and the better the performance of the catalysts. Surface area, pore structure and crystal structure of the catalysts are mainly controlled by preparation methods and alkalinity of synthesis system. The conversion of CO and selectivity of methanol are higher for DP catalysts than for SP catalysts.

关键词: Cu/ZrO2     methanol synthesis     deposition coprecipitation     solid state reaction     CO2/H2    

Primary hypertrophic osteoarthropathy: an update

null

《医学前沿(英文)》 2013年 第7卷 第1期   页码 60-64 doi: 10.1007/s11684-013-0246-6

摘要:

Digital clubbing, which has been recognized as a sign of systemic disease, is one of the most ancient diseases. However, the pathogenesis of clubbing and hypertrophic osteoarthropathy has hitherto been poorly understood. The study of a clinically indistinguishable idiopathic form (primary hypertrophic osteoarthropathy, PHO) provides an opportunity to understand the pathogenesis of hypertrophic osteoarthropathy. Current advances in the study of PHO are discussed. The impaired metabolism of prostaglandin E2 (PGE2) plays a central role in its pathogenesis.

关键词: digital clubbing     primary hypertrophic osteoarthropathy     prostaglandin E2 (PGE2)    

Microwave-assisted catalytic oxidation of gaseous toluene with a Cu-Mn-Ce/cordierite honeycomb catalyst

Longli Bo, Shaoyuan Sun

《化学科学与工程前沿(英文)》 2019年 第13卷 第2期   页码 385-392 doi: 10.1007/s11705-018-1738-3

摘要: A novel Cu-Mn-Ce/cordierite honeycomb catalyst was prepared by an incipient wetness method and the catalyst was characterized. The active ingredients were present as various spinel species of Cu, Mn and Ce oxides with different valences and they were unevenly dispersed over the surface of the catalyst. The catalytic oxidation of gaseous toluene was primarily investigated using a fixed bed reactor under microwave heating in the continuous flow mode. Under the optimal conditions of 6.7 wt-% loading of the active component, a bed temperature of 200°C, a flow rate of 0.12 m ·h and an initial concentration of toluene of 1000 mg·m , the removal and mineralization efficiencies of toluene were 98% and 70%, respectively. Thus the use of the microwave effectively improved the oxidation of toluene and this is attributed to dipole polarization and hotspot effects. After four consecutive cycles (a total of 1980 min), the Cu-Mn-Ce/cordierite catalyst still exhibited excellent catalytic activity and structural stability, and the toluene removal was higher than 90%. This work demonstrates the possibility of treating volatile organic compounds in exhaust gases by microwave-assisted catalytic oxidation.

关键词: microwave     catalytic oxidation     toluene     Cu-Mn-Ce/cordierite     mineralization    

Reconstruction of Cu–ZnO catalyst by organic acid and deactivation mechanism in liquid-phase hydrogenation

《化学科学与工程前沿(英文)》 2023年 第17卷 第9期   页码 1311-1319 doi: 10.1007/s11705-022-2281-9

摘要: A reconstructed Cu–ZnO catalyst with improved stability was fabricated by organic acid treatment method for the liquid-phase hydrogenation of dimethyl succinate to 1,4-butanediol. According to the characterization results of the fresh Cu–ZnO and reconstructed Cu–ZnO, three different forms of ZnO were suggested to be presented on the catalysts: ZnO having strong interaction with Cu species, ZnO that weakly interacted with Cu species and isolated ZnO. The first form of ZnO was believed to be beneficial to the formation of efficient active site Cu+, while the latter two forms of ZnO took the main responsibility for the deactivation of Cu–ZnO catalysts in the liquid-phase hydrogenation of diesters. The reconstruction of the Cu–ZnO catalyst by the organic acid treatment method resulted in a new Cu–ZnO catalyst with more Cu+ and less ZnO species that leads to deactivation. Furthermore, the deactivation mechanism of Cu–ZnO catalysts in liquid-phase diester hydrogenation in continuous flow system was proposed: the deposition of the polyesters on the catalysts via transesterification catalyzed by weakly interacted ZnO and isolated ZnO leads to the deactivation. These results provided meaningful instructions for designing highly efficient Cu–Zn catalysts for similar ester hydrogenation systems.

关键词: liquid phase     hydrogenation     Cu–ZnO     deactivation mechanism     1     4-butanediol     diester    

Removal of Cu(II) and Fe(III) from aqueous solutions by dead sulfate reducing bacteria

Hong’en QUAN, He BAI, Yang HAN, Yong KANG, Jiao SUN

《化学科学与工程前沿(英文)》 2013年 第7卷 第2期   页码 177-184 doi: 10.1007/s11705-013-1324-7

摘要: The biosorption properties of dead sulfate reducing bacteria (SRB) for the removal of Cu(II) and Fe(III) from aqueous solutions was studied. The effects of the biosorbent concentration, the initial pH value and the temperature on the biosorption of Cu(II) and Fe(III) by the SRB were investigated. FTIR analysis verified that the hydroxyl, carbonyl and amine functional groups of the SRB biosorbent were involved in the biosorption process. For both Cu(II) and Fe(III), an increase in the SRB biosorbent concentration resulted in an increase in the removal percentage but a decrease in the amount of specific metal biosorption. The maximum specific metal biosorption was 93.25 mg?g at pH 4.5 for Cu(II) and 88.29 mg?g at pH 3.5 for Fe(III). The temperature did not have a significant effect on biosorption. In a binary metal system, the specific biosorption capacity for the target metal decreased when another metal ion was added. For both the single metal and binary metal systems, the biosorption of Cu(II) and Fe(III) onto a SRB biosorbent was better represented by a Langmuir model than by a Freundlich model.

关键词: sulfate reducing bacteria     biosorption     Cu(II)     Fe(III)    

标题 作者 时间 类型 操作

甘肃金川铜镍(铂)硫化物矿床岩浆通道前进方向探讨

刘美玉,苏尚国,宋晨,蔡楠

期刊论文

中国铜镍(铂族)岩浆硫化物矿床主要成矿构造背景

钱壮志,段俊,冯延清,徐刚,张江江

期刊论文

Catalytic hydrolysis of gaseous HCN over CuNi/γ-Al

Linxia Yan, Senlin Tian, Jian Zhou, Xin Yuan

期刊论文

岩浆镍铜铂族矿床成矿过程中流体的作用——对小岩体超大型矿床的启示

张铭杰,汤庆艳,李文渊、余明、胡沛青、李建平

期刊论文

Ni-Ti-Cu-V四元薄膜库中微观结构和相变的组合合成和高通量表征

Naila M. Al Hasan, Huilong Hou, Suchismita Sarkar, Sigurd Thienhaus, Apurva Mehta, Alfred Ludwig, Ichiro Takeuchi

期刊论文

东天山地区铜镍矿找矿评价指标探讨

刘欢,焦建刚,张国鹏、高栋、邵乐奇

期刊论文

Zr66Al9Cu16Ni9块体非晶合金制备工艺研究

阮许平,阮宏伟

期刊论文

小岩体成大矿的理论与找矿实践意义——以西北地区岩浆铜镍硫化物矿床为例

李文渊,张照伟,陈博

期刊论文

喀拉通克与金川铜镍硫化物矿床地质地球化学特征对比及其意义

代俊峰,宫磊,樊立飞,王勇,赵斌斌

期刊论文

Selective recovery of Cu

Haiping LUO,Bangyu QIN,Guangli LIU,Renduo ZHANG,Yabo TANG,Yanping HOU

期刊论文

Preparation of Cu/ZrO

Xinmei LIU, Shaofen BAI, Huidong ZHUANG, Zifeng YAN

期刊论文

Primary hypertrophic osteoarthropathy: an update

null

期刊论文

Microwave-assisted catalytic oxidation of gaseous toluene with a Cu-Mn-Ce/cordierite honeycomb catalyst

Longli Bo, Shaoyuan Sun

期刊论文

Reconstruction of Cu–ZnO catalyst by organic acid and deactivation mechanism in liquid-phase hydrogenation

期刊论文

Removal of Cu(II) and Fe(III) from aqueous solutions by dead sulfate reducing bacteria

Hong’en QUAN, He BAI, Yang HAN, Yong KANG, Jiao SUN

期刊论文