搜索结果: 1-15 共查到“Nickel”相关记录142条 . 查询时间(0.092 秒)
Iridium 'loses its identity' when interfaced with nickel（图）
Iridium loses identity interfaced nickel
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2019/10/17
Note to physicists and materials scientists: You'd better reevaluate your work if you study iridium-based materials -- members of the platinum family -- when they are ultra-thin.Iridium "loses its ide...
Researchers Inadvertently Boost Surface Area of Nickel Nanoparticles for Catalysis（图）
Researchers Boost Surface Area Nickel Nanoparticles Catalysis
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2017/12/18
Ni nanoparticles (NPs) catalyze many chemical reactions, in which they can become contaminated or agglomerate, resulting in poorer performance. We report deposition of silica (SiO2) onto Ni NPs from t...
Kinetics of Aluminization and Homogenization in Wrought H-X750 Nickel-Base Superalloy
Aluminization and Homogenization Wrought H-X750 Nickel-Base Superalloy
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2014/10/23
In sub-millimeter sheets of wrought H-X750 Nickel-base superalloy, aluminum-rich coatings are bonded to matrix with a vapor phase aluminization process. If an appropriate amount of aluminum is bonded ...
Nickel limitation of nitrogen fixation inTrichodesmium
Nickel limitation nitrogen fixation Trichodesmium
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2014/4/2
I show that the growth ofTrichodesmium, the primary diazotrophic phytoplankton in tropical and subtropical oceans, can be limited by Ni availability in both trace metal–defined culture media and natur...
Ferric hydrogen sulfate supported on silica-coated nickel ferrite nanoparticles as new and green magnetically separable catalyst for 1,8-dioxodecahydroacridine synthesis
Magnetically separable catalyst Ferric hydrogen sulfate Nickel ferrite nanoparticles 1,8-Dioxodecahydroacridine
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2014/3/8
A new magnetically separable catalyst consisting of ferric hydrogen sulfate supported on silica-coated nickel ferrite nanoparticles was prepared. The synthesized catalyst was characterized using vibra...
Liquid Phase Hydrogenation of Nitrobenzene over Nickel Supported on Titania（图）
hydrogenation nitrobenzene nickel titania aniline
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2013/10/5
The catalytic hydrogenation of nitrobenzene to aniline employing nickel impregnated on rutile, anatase, and high surface area titania supports has been investigated. The nickel is present in elemental...
Synthesis of Nickel Hexacyanoferrate Nanoparticles and Their Potential as Heterogeneous Catalysts for the Solvent-Free Oxidation of Benzyl Alcohol（图）
hexacyanoferrate nanoparticle heterogeneous catalyst benzyl alcohol benzaldehyde
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2013/10/9
Nickel hexacyanoferrate nanoparticles were synthesized and characterized using elemental analysis, thermal analysis, infrared spectroscopy, and X-ray diffraction. A FE-SEM image of the nickel hexacyan...
K-shell photoionization of Nickel ions using R-matrix
atomic data atomic processes line formation X-rays
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2011/8/17
Abstract: We present R-matrix calculations of photoabsorption and photoionization cross sections across the K edge of the Li-like to Ca-like ions stages of Ni. Level-resolved, Breit-Pauli calculations...
Preparation of a Nickel Molybdenum Carbide Catalyst and Its Activity in the Dry Reforming of Methane（图）
catalyst activation catalyst selectivity fuel dry reforming methane
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2013/10/13
Nickel molybdenum carbide catalysts were prepared and their activities in the CO2 reforming of methane at a low CO2/CH4 reactant ratio were investigated using a microreactor at atmospheric pressure an...
Deactivation and Regeneration of Nickel-Based Catalysts for Steam-Methane Reforming（图）
nickel catalyst steam reforming deactivation sintering sulfur poisoning regeneration
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2013/10/15
The deactivation of nickel catalysts used in Arak and Razi petrochemical complexes followed by catalyst regeneration was evaluated. The characterization of the different structures was made by powder ...
Effects of annealing and annealing cooling media in corrosion resistance and microhardness of low content Chromium Nickel steel
Corrosion Resistance Microhardness
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2010/9/26
To study the effect of intermediate spheroidal annealing on some properties of a metal, samples of chromium-nickel steal were chosen. The samples were carburized, normalized, annealed, hardened and te...
Monte Carlo simulations of the Nickel K$\alpha$ fluorescent emission line in a toroidal geometry
galaxies active - line formation - radiation mechanism general - scattering - X-rays general
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2010/11/12
We present new results from Monte Carlo calculations of the flux and equivalent width(EW) of the Ni K fluorescent emission line in the toroidal X-ray reprocessor model of Murphy & Yaqoob (2009, MNRAS...
Solid phase extraction of copper, nickel, and cobalt in water samples after extraction using surfactant coated alumina modified with indane-1,2,3-trione 1,2-dioxime and determination by flame atomic absorption spectrometry
Solid phase extraction surfactant coated alumina atomic absorption spectrometry
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2010/12/3
A simple method for simultaneous pre-concentration of Cu, Ni, and Co metal ions prior to their determination by flame atomic absorption spectrometry is reported. The method is based on the extraction ...
'Solid phase extraction of Copper, Nickel and Cobalt in water samples after extraction using surfactant Coated alumina modified with Indane-1,2,3-trione 1,2-dioxime and determination by flame atomic absorption
Solid phase extraction surfactant coated alumina atomic absorption spectrometry
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2010/10/19
A simple method for simultaneous pre-concentration of Cu, Ni, and Co metal ions prior to their determination by flame atomic absorption spectrometry is reported. The method is based on the extraction ...
Nickel Phosphide Catalysts Supported on SBA-15 for Hydrodesulfurization of 4,6-Dimethyldibenzothiophene
Nickel phosphide catalyst SBA-15 support Hydrodesulfurization 4,6-Dimethyldibenzothiophene EXAFS
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2010/9/8
Ni2P catalysts supported on SiO2 and SBA-15 were successfully prepared by temperature-programmed reduction (TPR), and the effect of Ni2P dispersion on the 4,6-dimethyldibenzothiophene hydrodesulfuriza...