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Showing 1 to 20 of 22 for “"Ni-P"”.
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Reactivity and Structure of Supported Nickel Phosphides (Ni₂P) in Deep Hydrodesulfurization Catalysis
… describes preparation and characterization of Ni₂P catalysts and their application in deep hydrodesulfurization (HDS) of a model sulfur compound, 4,6-dimethyldibenzothiophene (4,6-DMDBT), one of the most refractory S-compounds. This topic is of great importance in addressing recently enacted …
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Development and Evaluation of NI-P-PTFE Based Nano-Composite Coatings for Medical Devices
… devices always impose considerable inconvenience and distress to patients and place a substantial economic burden on health care systems. The aim of this research is to solve this problem by developing a new coating which can reduce bacterial adhesion and slow down the corrosion behaviour …
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Shear modulus relaxation of bulk metallic glass, Pd₄₀Ni₄₀P₂₀, near the glass temperature
… of relaxing glasses. The shear modulus, G, is uniquely sensitive to interstitialcies and provides a convenient way to monitor their changing concentrations. A non-contact EMAT technique is used to excite and detect a shear wave resonance in bulk amorphous metallic glass Pd40Ni40P20 during and …
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Spectroscopic and Kinetic Studies of Hydrodenitrogenation and Hydrodesulfurization over Supported Nickel Phosphide (Ni₂P)
… describes preparation and characterization of Ni₂P catalysts and their application in hydrodesulfurization (HDS) and hydrodenitrogenation (HDN). The work carried out includes synthesis of Ni₂P on different siliceous supports, SiO2 and MCM-41. It also includes characterization of these catalytic …
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Novel, High Activity Hydroprocessing Catalysts: Iron Group Phosphides
A series of iron, cobalt and nickel transition metal phosphides was synthesized by means of temperature-programmed reduction (TPR) of the corresponding phosphates. The same materials, Fe₂P, CoP and Ni₂P, were also prepared on a silica (SiO₂) support. The phase purity of these catalysts was …
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Development and evaluation of anti-biofouling nano-composite coatings
… which reduces heat transfer performance significantly. The cost of cleaning and lost output can be extremely high. The high incidence of infections caused by the biofilm formation on the surfaces of medical devices and implants, including catheters and bone fracture fixation pins etc. has a …
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Concentration depth-profile reconstruction from angle-resolved XPS data using the maximum entropy method: characterization of surface film formed on Ni-18P alloy
… of computer generated, ideal and error containing, ARXPS data from model depth-profiles with up to four layers and up to eight components. In a second phase, the tested algorithm was implemented using real ARXPS data obtained from technologically important, highly corrosion and wear resistant …
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Production of phosphorus alloys through thermal reactions and electrochemical reduction of molten apatite
… directly from decomposed molten fluorapatite. Nickel-phosphide is chosen as an examplary alloy both for its incredible thermodynamic stability and for its mechanical properties. Molten hydroxyapatite decomposes as it melts into two solid phosphorus rich phases, tricalcium phosphate and …
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Plastic and mixed waste as feedstocks for solar-driven H₂ production
… water to H₂ and oxidise waste into other organics under ambient temperature and pressure. To date, the majority of photoreforming research has relied on ultraviolet-driven photocatalysts coupled with precious metal co-catalysts to convert ‘model’ molecules rather than complex waste. In this …
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Biofilm Formation by Common Dairy Sporeformers on Native and Modified Stainless Steel Surfaces
… Stainless Steel surface (AMC 18, Dursan, Ni-PPTFE and Lectrofluor 641). Heat resistant aerobic spore-forming bacteria were specifically picked for this study as these can survive pasteurization, Ultra High Temperature (UHT) treatment and can also develop Heat Resistant Spores (HRS), which …
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Synthetic, Structural and Thermochemical Studies of N-Heterocyclic Carbene (NHC) and Tertiary Phosphine Ligands in the Ni(CO)2(L)x (L-PR3, NHC) Systems
Carbonyl complexes of Ni(0) incorporating two N-heterocyclic carbenes of the type Ni(CO)2(NHC)2 (NHC = ICy [N, N'-bis(cyclohexylimidazol)-2-ylidene], IMes [N, N'- bis(2, 4, 6-trimethylphenyl)-imidazol)-2-ylidene]) have been prepared. The complexes Ni(CO)2(ICy)2 (8) and Ni(CO)2(IMes)2 (9) have been …
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Synthesis And Characterization Of Discrete Fexni2-Xp Nanoparticles; Assembly Of Phosphide Nanoparticles Into Porous Networks
… to catalysis, magnetism, and optoelectronic applications. These include (1) synthesis of discrete FexNi2-xP ternary nanocrystals of relevance to hydrodesulfurization (HDS) catalysis and magnetism, and (2) 3-dimensional nanostructures (gels and aerogels) of InP and Ni2P.</p> <p>A …
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Photoelectrochemical and Chemoenzymatic Reforming for Sustainable Fuel Production
… of scientists, policy-makers and global organisations to come up with effective and expeditious solutions to address these challenges. In this context, the development of sustainable technologies driven by renewable energy sources for the production of clean fuels and commodity chemicals from …
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Electrodeposited Functional Nanowires for Energy Applications
… and hence scalable fabrication techniques have been used throughout this work. Electrochemical deposition or electrodeposition (ED) in conjunction with nanoporous templates i.e. template-assisted electrodeposition (TAED) have been used to grow piezoelectric zinc oxide (ZnO) and …
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Nucleation and growth kinetics of tin and tin -silver alloy during initial stages of electrodeposition
… has played an essential role in electronics packaging because it gives superior thickness control for chip interconnects. Pure tin, tin-silver and tin-silver-based solders have been identified as leading candidates for lead-free solders due to the desirable melting point, good creep …
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Topochemical Manipulation of Layered Perovskites
<p> <p>Topochemical strategies, techniques that allow one to effectively manipulate the structures of nonmolecular solids once a crystal lattice is established, are effective in the low temperature (< 500 °C) modification of solid state structures, allowing the preparation of nonmolecular compounds …
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Major and trace element characterization and correlation of the Sentinel Butte Ash/Bentonite (Paleocene), McKenzie County, North Dakota
<p> The Sentinel Butte ash/bentonite has been used for stratigraphic correlation in and around the North Unit of Theodore Roosevelt National Park in western North Dakota primarily by tracing it along the escarpments of the Little Missouri River. The purpose of this study was to determine the …
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Copper mineralization in the Coed-Y-Brenin Porphyry Copper Deposit, North Wales: Mineralogy and Textures
The Coed-Y-Brenin porphyry copper deposit represents the largest deposit (200 mt) of its kind within the UK. This study aims to further understand the mineralogy and textures of ore minerals within the Coed-Y-Brenin deposit. <br/><br/>The area consists of middle to upper Cambrian sediments, namely …
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Γεωχημική μελέτη των ιζημάτων του πυθμένα και της λεκάνης απορροής της Λίμνης της Καστοριάς
… (Mo), νάτριο (Na), νιόβιο (Nb), νικέλιο (Ni), φωσφόρος (P), μόλυβδος (Pb), ρουβίδιο (Rb), ρήνιο (Re), θείο (S), αντιμόνιο (Sb), σκάνδιο (Sc), σελήνιο (Se), κασσίτερος (Sn), στρόντιο (Sr), ταντάλιο (Ta), τελλούριο (Te), θόριο (Th), τιτάνιο (Ti), θάλλιο (Tl), ουράνιο (U), βανάδιο (V), …
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