Cobalt catalysts
Accelerated Deactivation and Activity Recovery Studies of Ruthenium and Rhenium Promoted Cobalt Catalysts in Fischer-Tropsch Synthesis
... CoRu catalysts reduce upto about 25 h time on stream, then levels ...CoRu catalysts, ...promoted catalysts and is almost equal to deactivation of the unpromoted ...
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Time Resolved XANES Studies on Used Silica Supported Cobalt Catalysts
... stable catalysts with high wax selectivity. Today cobalt catalysts for FT diesel production from natural gas are designed for a maximum wax selectivity [4, ...5]. Cobalt is considered as the ...
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Solvent Pre-treated Effects of Carbon Nanotube-supported Cobalt Catalysts on Activity and Selectivity of Fischer-Tropsch Synthesis
... FTS catalysts were ...supported cobalt simultaneously, contributing to high catalytic activity of this kind of catalyst applied to FTS reactions in a CSTR after the initial catalyst ...stable cobalt ...
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Zirconia Modification on Nanocrystalline Titania Supported Cobalt Catalysts for Methanation
... example, cobalt and iron are the metals which have been used in the industry for hydrocarbon ...the cobalt catalysts are more expensive, they are more resistant to deactivation than iron metals ...
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The Effects of Potassium Promoter on the Syngas Conversion of Cobalt Catalysts (TECHNICAL NOTE)
... of cobalt catalysts were also hinted ...supplying cobalt catalysts with silica base, and the potassium promoter were thought ...supplying catalysts were debated according to a new ...
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Effect of Particle Size of Platinum and Platinum-Cobalt Catalysts on Stability Against Load Cycling223-232
... A decrease in metal loading of the catalyst would normally be expected to increase the catalyst surface area, and hence increase the catalyst activity. On the other hand, catalysts with a low metal loading tend to ...
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Azamacrocyclic cobalt catalysts
... The dinuclear Co(II) complex of O-bistren was first prepared by Lehn and collaborators*118). Motekaitis et al *119> have reported the dioxygen formation constants. Pontentiometric studies *931 indicate that the simple ...
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Effect of Cobalt Precursors on Properties of Co/CoAl<sub>2</sub>O<sub>4</sub> Catalysts Synthesized by Solvothermal Method
... as catalysts for FTS, such as iron (Fe), cobalt (Co), nickel (Ni), and ruthenium (Ru) ...supported cobalt catalysts are preferred for FTS because of their high activities for FTS based on ...
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Correlation between Fischer-Tropsch catalytic activity and composition of catalysts
... into cobalt catalysts increased the reduction, CO chemisorption and number of cobalt active sites of the catalyst while an opposite trend was observed for the iron-riched bimetallic ...monometallic ...
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Improvement of Cobalt Dispersion on Co/SBA 15 and Co/SBA 16 Catalysts by Ultrasound and Vacuum Treatments during Post Impregnation Step
... Co. Cobalt silicate can be formed when the temperature is raised above 500 C depending on the support type ...supported cobalt catalysts, the Co/SBA-15-N has two reduction peaks around 280-420 C ...
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The Oxidation Of Carbon Monoxide By Using Different Cobalt Precursors Prepared Catalysts
... The cobalt oxide catalyst samples in ...of cobalt at different locations on the catalyst granular ...of cobalt on the external surface of the cobalt oxalate ...the cobalt ...
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Oscillatory behaviour during the partial oxidation of methane over cobalt wires and foils
... the oxidation of carbon, deposited on the surface dur- ing the period when only methane was present in the gas phase. This deposition could be significant in the absence of oxygen although carbon deposition could take ...
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Cobalt Recovery from Waste Catalysts (Petroleum Refining Industry from Gujarat)
... India cobalt consumption is more than its produc- ...of cobalt, it is very important to recover cobalt from various secondary sources ...The cobalt sources mentioned above become secondary ...
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Cu(II)-Schiff base/SBA-15 as an efficient catalyst for synthesis of decahydroacridine-1,8-diones
... published so far, they suffer from different limitations, such as difficulty in catalyst separation, difficulty in handling of catalyst, use of expensive catalysts, organic solvents, and also occurrence of side ...
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Computational Investigation of Small Molecule Catalysis by Cobalt, Rhodium, and Iridium Molecular Catalysts
... Two overarching motifs can be seen in this thesis beyond the connection of energy sciences. The first is the capacity of small modifications in structure to have large effects on catalytic ability. Gaining a true ...
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Effect of Substitution Degree and the Calcination Temperature on the N2O Decomposition over Zinc Cobaltite Catalysts
... co-precipitation method. Thermal analyzes (TGA and DTA) were used to follow up the thermal events accompanying the heat treatment of the parent mixture. Based on these results, the various parent mixtures were calcined ...
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Synthesis and characterization of cobalt–based catalysts for selective oxidation of styrene and photodegradation of methylene blue
... and cobalt(II) salicylaldehyde. Meanwhile for cobalt complex supported on silica-coated magnetite, APTMS was functionalized on silica-coated magnetite then reacted with cobalt(II) ...form ...
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Cobalt Oxide Nanoparticles Supported on γ-Alumina as Catalysts in The Selective Oxidation of Alcohols in Aqueous Phase
... For investigation of the loading effect Co 3 O 4 on the conversion and selectivity of the products three catalysts were tested. In Table 1, details of the conversion and selectivity of the products for each ...
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Genome-wide analysis discloses reversal of the hypoxia- induced changes of gene expression in colon cancer cells by zinc supplementation
... of cobalt, zinc and anticancer drug and evaluated the effect of zinc on gene expression ...the cobalt-induced changes of gene expression, with reactivation of the drug-induced transcription of pro-apoptotic ...
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Copper nanofiber networked cobalt oxide composites for high performance Li ion batteries
... The crystalline information and chemical composition of deposited electrode materials have been elucidated by XRD and XPS. Figure 2a compares the XRD patterns of CuNFs, CoO x TF, and CuNFs@CoO x , respectively. The ...
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