Journal of Research of the National Bureau of Standards
Topics: data, Kessler, ruthenium, Zeeman
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Topics: Metathesis, Diolefins, Ruthenium, Catalysts
Journal of Research of the National Bureau of Standards
Topics: configurations, eigenvectors, first spectrum, ruthenium
Journal of Research of the National Bureau of Standards
Topics: analysis, first spectrum, ionization, ruthenium
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Topics: Reflectometer, Valence (Theoretical chemistry), Ruthenium, Iron
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Topics: Ruthenium, Electrochemical analysis, Valence (Theoretical chemistry)
http://uf.catalog.fcla.edu/uf.jsp?st=UF001127180&ix=nu&I=0&V=D
Topics: Catalysts, Alcohol--Oxidation, Ruthenium carboxylate, Oxidation.
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14
Jul 19, 2019
07/19
by
Griffith, William Pettit
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ix, 491 p. : 24 cm. --
Topics: Coordination compounds, Iridium, Osmium, Rhodium, Ruthenium
Journal of Research of the National Bureau of Standards
Topics: Hexafluorobenzene, tribomofluoromethane, platinum, pyrolysis, ruthenium, synthesis
Typescript
Topics: Molecular orbitals, Oxidation, Ruthenium, Complex compounds
Typescript
Topics: Transition metal compounds, Molybdenum, Rhodium, Ruthenium
http://uf.catalog.fcla.edu/uf.jsp?st=UF002046398&ix=pm&I=0&V=D&pm=1
Topics: Carbenes (Methylene compounds, Ruthenium, Organometallic compounds.
Journal of Research of the National Bureau of Standards
Topics: Phase diagram, intermetallic compound, ruthenium, solubility, uranium
Typescript
Topics: Iron, Ruthenium, Complex compounds, Organic compounds
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Topics: Transition metals, Complex compounds, Oxidation, Catalysts, Ruthenium
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Nov 26, 2014
11/14
by
DEVARAJAN EZHILARASU 1 and EAGAMPERAM MURUGAN*
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Intriguing catalytic activity of silver and ruthenium nanoparticles has potential application as a nanostructured catalyst. Metal nanoparticles are of wide interest because of their large surface area and some of the properties which differs them from those of bulk metal solids. The increased catalytic activity of these metal nanoparticles is attributed to their size and shape, which can be controlled be controlled by an insoluble polymer stabilization. The present study is aimed to synthesis,...
Topics: Ruthenium, silver, nanoparticle, polymer matrix, cross linking, catalysts.
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266
Jun 12, 2011
06/11
by
NON
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The next generation of rocket engine turbopumps is being developed by industry through Government-directed contracts. These turbopumps will use fluid film bearings because they eliminate the life and shaft-speed limitations of rolling-element bearings, increase turbopump design flexibility, and reduce the need for turbopump overhauls and maintenance. The design of the fluid film bearings for these turbopumps, however, requires sophisticated analysis tools to model the complex physical behavior...
Topics: PALLADIUM ISOTOPES, IRON METEORITES, MOLYBDENUM, RUTHENIUM, REFRACTORIES, ANOMALIES, BONDING
Highly active Ru/TiO2 catalysts for Sabatier reaction have been developed. The catalysts have shown to be stable under repeated shutting down/startup conditions. When the Ru/TiO2 catalyst is coated on the engineered substrate Fe-CrAlY felt, activity enhancement is more than doubled when compared with an identically prepared engineered catalyst made from commercial Degussa catalyst. Also, bimetallic Ru-Rh/TiO2 catalysts show high activity at high throughput.
Topics: NASA Technical Reports Server (NTRS), BIMETALS, CATALYSTS, SABATIER REACTION, STABILITY, TITANIUM...
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Topics: Complex compounds, Organometallic compounds, Ligands, Ruthenium, Iron, Amine isocyanoborane
The electronic spectra and electrochemical potentials of the species Ru(bipy)x(NN)3-x(2+)(bipy = 2,2'-bipyridine, NN = unsaturated diimine, x = 1,2) are correlated via fundamental relationships involving reorganisation and solvation energies. It is argued that the presence of two distinct Ru yields ligand charge transfer transitions allows comparison of the reorganisation energies therefore. Originator supplied keywords include: Ruthenium, Bipyridine, Reorganisation energy, Electrochemistry,...
Topics: DTIC Archive, Dodsworth,E S, YORK UNIV DOWNSVIEW (ONTARIO) DEPT OF CHEMISTRY, *SPECTROSCOPY,...
For equilibrium studies, pure solutions of ruthenium(III) and ruthenium(IV) perchlorates or sulfates are needed. A survey is given of synthetic and analytical methods reported in literature. Since none of them was suitable for our purpose, new or modified methods were worked out. For the preparation of ruthenium(IV) sulfate solution, RuO4 was reduced with H2O2 in dilute H2SO4 and the ruthenium(IV) cations separated from complex anions by a cation exchanger. For the preparation of...
Topics: DTIC Archive, Brito, Felipe, ROYAL INST OF TECH STOCKHOLM (SWEDEN) DEPT OF INORGANIC CHEMISTRY,...
C911 Lab News 01 17 86
Topics: sandia, catalysts, catalytic, center, projectile, albuquerque, lab, mexico, parachute, ruthenium,...
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News/Business. Human-interest stories from around the world.
Topics: perkin, ruthenium, exxon, phenolphthalein, william henry perkin, europe, barton, bayer, brown,...
Source: Comcast Cable
Our aim was to design soft, active materials that: 1) function in an autonomous, self-sustained way, 2) perform multiple, complex functions, and 3) alter their functionality in a programmable manner in response to external stimuli. We took advantage of the unique properties offered by polymer gels undergoing the Belousov-Zhabotinsky (BZ) reaction. The BZ gels can transduce chemical energy into mechanical oscillations in the absence of external stimuli. Consequently, these polymer networks can...
Topics: DTIC Archive, PITTSBURGH UNIVERSITY PA OFFICE OF RESEARCH, *GELS, ADAPTATION, CHEMICAL REACTIONS,...
New supported ruthenium caytalysts have been prepared a) by diffusing Ru(CO)5 into the pores of faujasitic zeolites, and b) by sorbing ruthenium carbonyl cluster compounds onto oxide supports. After thermal activation, the supported ruthenium systemes catalyse the hydrogenation of carbon monoxide to mixtures of paraffins and olefins, but the hydrogenation of carbon monoxide hydrogenation results in typical Anderson-Schulz-Flory (A-S-F) product distributions, ie. low in C2 and C3 hydrocarbons,...
Topics: DTIC Archive, Hastings,W R, QUEEN'S UNIV KINGSTON (ONTARIO) DEPT OF CHEMISTRY, *CATALYSTS, *CARBON...
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May 29, 2011
05/11
by
Ferlemann, Shelly M.; Robinson, Jeffrey S.; Martin, John G.; Leonard, Charles P.; Taylor, Lawrence W.; Kamhawi, Hilm
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Designing a hypersonic vehicle is a complicated process due to the multi-disciplinary synergy that is required. The greatest challenge involves propulsion-airframe integration. In the past, a two-dimensional flowpath was generated based on the engine performance required for a proposed mission. A three-dimensional CAD geometry was produced from the two-dimensional flowpath for aerodynamic analysis, structural design, and packaging. The aerodynamics, engine performance, and mass properties arc...
Topics: CATALYSTS, X RAY DIFFRACTION, SCANNING ELECTRON MICROSCOPY, DEPOSITION, SPUTTERING, THIN FILMS,...
Previous work on conduction mechanisms in thick film microcircuits is reviewed and the goals of the current project outlined. The design and performance of a programmable time-temperature firing facility, and an automatic resistance measuring system is described. The test system chosen for thick film resistor studies was ruthenium dioxide conductive, PbO-B2O3-SiO2 glass, and 96% Al2O3 substrate. Published data on the thermophysical properties of each of these ingredients are discussed, and...
Topics: DTIC Archive, Vest, R W, PURDUE RESEARCH FOUNDATION LAFAYETTE IN, *PRINTED CIRCUITS, *RESISTORS,...
Ru, Mo and Pd are very useful indicators for the identification of nucleosynthetic components. We have developed techniques for Pd isotopes, in an effort to check the extent of isotopic effects in this mass region and for a Pt-group element which is less refractory than Ru. Stable Pd isotopes are produced by the process only (102Pd), the s-process only (104Pd), the process only (Pd-110) and by both the r- and s-processes (Pd-105, Pd-106, Pd-108). Kelly and Wasserburg reported a hint of a shift...
Topics: NASA Technical Reports Server (NTRS), PALLADIUM ISOTOPES, IRON METEORITES, MOLYBDENUM, RUTHENIUM,...
Aryidene complexes of ruthenium have been successfully prepared. These complexes possess reasonable stability and undergo cyclopropanation reactions with olefins. Cis-stereochemistry predominates in the latter reactions. A remarkably stable cyclopropyl substituted carbene complex of iron has been prepared. This complex also undergoes cyclopropanation reactions. (Author)
Topics: DTIC Archive, Husk,G R, NORTH CAROLINA UNIV AT CHAPEL HILL, *Complex compounds, *Carbenes,...
Fuel cells are attractive power sources for a variety of Department of Defense (DoD) needs. Among the various types of fuel cells, direct methanol fuel cells (DMFC) are particularly well-suited for mobile applications (such as soldier power, unmanned underwater systems, and communication devices) since DMFCs employ easily manageable liquid methanol fuel with excellent energy storage densities. However, the adoption of DMFC technology has been hampered by high system costs and complexity, low...
Topics: DTIC Archive, TEXAS UNIV AT AUSTIN, *MEMBRANES, *DIRECT METHANOL FUEL CELLS, *MATERIALS, METHANOLS,...
We have found ferromagnetism in epitaxially grown superlattices of CaRuO3=CaMnO3 that arises in one unit cell at the interface. Scanning transmission electron microscopy and electron energy loss spectroscopy indicate that the difference in magnitude of the Mn valence states between the center of the CaMnO3 layer and the interface region is consistent with double exchange interaction among the Mn ions at the interface. Polarized neutron reflectivity and the CaMnO3 thickness dependence of the...
Topics: DTIC Archive, IOWA UNIV IOWA CITY, *CALCIUM, *FERROMAGNETISM, *MANGANESE OXIDES, *OXIDES,...
Cyclopentadienyl carbonyl complexes of iron and ruthenium have been shown to have broad applications in organic synthesis. The viability of these complexes as intermediates is dependent upon convenient and rapid synthetic routes for their preparation. This research has primarily been directed towards the extension of phase-transfer techniques to the preparation of iron and ruthenium allyl and crotyl complexes. In addition, the synthesis of iron and ruthenium olefin complexes by photochemical...
Topics: DTIC Archive, Brown,D J, NAVAL ACADEMY ANNAPOLIS MD, *SYNTHESIS(CHEMISTRY), *STEREOCHEMISTRY,...
Precious indeed are the platinum-group metals (PGMs): ruthenium, Ru; rhodium, Rh; palladium, Pd; osmium, Os; iridium, Ir; and platinum, Pt. The earthly scarcity and concomitant cost of PGMs have always tempered their adoption in the vast array of strategic and commercial technologies in which their inclusion would yield improved performance. We can now attain the impressive electronic and electrochemical properties of ruthenium oxide -- high electronic conductivity, high capacitive charge...
Topics: DTIC Archive, NAVAL RESEARCH LAB WASHINGTON DC CHEMISTRY DIV, *RUTHENIUM COMPOUNDS, *SILICON...
Introduction: Proposed Research Overview, Synthesis of Backfluorinated NHC Carbene, Precursors, Synthesis of Ir complexes, IR study of Ir dicarbonyl complexes, Synthesis of Ru complexes, Reactivity of Ru complexes, Conclusions and Future Directions.
Topics: DTIC Archive, AIR FORCE RESEARCH LAB EDWARDS AFB CA AEROSPACE SYSTEMS DIRECTORATE, *CARBENES,...
A wet oxidation process was developed for oxidizing waste materials, comprising dissolved ruthenium salt in a reactant feed stream containing the waste materials. The feed stream is introduced into a reactor, and the reactor contents are then raised to an elevated temperature to effect deposition of a catalytic surface of ruthenium black on the interior walls of the reactor. The feed stream is then maintained in the reactor for a period of time sufficient to effect at least partial oxidation of...
Topics: NASA Technical Reports Server (NTRS), INDUSTRIAL WASTES, OXIDATION, SOLID WASTES, CATALYSTS, NOBLE...
The heterogeneous decomposition of liquid hydrazine on a supported ruthenium catalyst is a complex reaction. The kinetics have been analysed in terms of two simultaneous reactions: 3N2H4 to N2 + 4NH3 and 2N2H4 to N2 + H2 + 2NH3. Both reactions are first order with respect to hydrazine concentration. It is suggested that the first reaction occurs when hydrazine is associatively adsorbed on the catalyst but that when it is dissociatively adsorbed the second reaction occurs.
Topics: DTIC Archive, Sayer, C F, ROCKET PROPULSION ESTABLISHMENT WESCOTT (UNITED KINGDOM), *HYDRAZINES,...
1,466
1.5K
Jul 12, 2010
07/10
by
NON
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Progress made by the Flat Plate Solar Array Project during the period April 1982 to January 1983 is described. Reports on polysilicon refining, thin film solar cell and module technology development, central station electric utility activities, silicon sheet growth and characteristics, advanced photovoltaic materials, cell and processes research, module technology, environmental isolation, engineering sciences, module performance and failure analysis and project analysis and integration are...
Topics: CARBON DIOXIDE REMOVAL, METABOLIC WASTES, OXIDATION-REDUCTION REACTIONS, CATALYSTS, CHEMICAL...
A ruthenium porphyrin catalyst with styrene side chains was incorporated into a highly cross-linked polymer by co-polymerization with ethylene glycol dimethacrylate in the presence of a chloroform porogen. Oxidation reactions catalyzed by the resulting polymer were accelerated when perfluoromethylcyclohexane (PFMC) was used as a co-solvent. Moreover, the PFMC co-solvent was found to change the substrate selectivity of the catalytic reactions. Both effects could be explained by a PFMC-induced...
Topics: DTIC Archive, Severin, Kay, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (SWITZERLAND), *POLYMERS,...
Bis(Bipyrazine)ruthenium(II) complexes of general formula cis-Ru(BPZ)2X2n+ are reported where X = C1(-), Br-, Scn-, NO2-, C032-, oxalate 2-, H20, OH- and (OH)(H20)-, ans n = 0, 1, or 2. The complexes are characterized by microanalysis, electronic, vibrational and nmr spectra and conductivity. Electrochemical data are reported and interpreted in terms of the Ru(III)/Ru(II) and BPZ/BPZ- couples. Two principal charge transfer bands in the electronic spectra of these complexes are rationalised in...
Topics: DTIC Archive, Crutchley,R J, TEXAS UNIV AT AUSTIN, *NUCLEAR MAGNETIC RESONANCE, *SPECTROSCOPY,...
Topics: DTIC Archive, Sachse, G, LIBRARY OF CONGRESS WASHINGTON DC AEROSPACE TECHNOLOGY DIV, *PURIFICATION,...
Systematic studies were made on the preparation and characterization of halogenide-free rhodium sulfate and perchlorate solutions. Improved methods of preparation and analysis were worked out. Some redox emfs for Rh(III, V) mixtures are given. They do not correspond to real equilibrium, but the apparent standard electrode potential in 0.5 - 1 M HClO4 is around 1.42 V. Absorption spectra are given for the solution prepared. Pure palladium(II) perchlorate and sulfate solutions were prepared by...
Topics: DTIC Archive, Berecki-Biedermann, Clara, ROYAL INST OF TECH STOCKHOLM (SWEDEN), *PALLADIUM,...
Preliminary results on resistor microstructure are presented and their correlation with the proposed model discussed. The study of RuO2-glass composites led to the conclusion that the difference in thermal expansion between the RuO2 and the glass is a minor factor in controlling resistor TCR. Preliminary studies of the resistance changes during firing of a thick film resistor are described. Evaluation of the performance of the screen printing machine has established that the variations in...
Topics: DTIC Archive, Vest, R W, PURDUE RESEARCH FOUNDATION LAFAYETTE IN, *CIRCUITS, *FIXED RESISTORS,...
The effort that has been undertaken during this Phase I STTR program will enable NanoSonic and their academic partner at the University of Dayton to readily move toward commercialization of a sensor paint during Phase II. A bichromophoric compound containing a pressure-sensitive chromophore and a temperature-sensitive chromophore has been synthesized and formulated into a paint. The luminescent intensity response of the temperature sensor was characterized by fluorescence spectroscopy and was...
Topics: DTIC Archive, Swavey, Rochael J, NANOSONIC INC BLACKSBURG VA, *FLUORESCENCE, *CHROMOPHORES,...
A small, high-resolution, low-power thermometer has been developed for use in ultra-low temperatures that uses multiple RuO2 chip resistors. The use of commercially available thick-film RuO2 chip resistors for measuring cryogenic temperatures is well known due to their low cost, long-term stability, and large resistance change.
Topics: NASA Technical Reports Server (NTRS), CRYOGENIC TEMPERATURE, THERMOMETERS, RUTHENIUM COMPOUNDS,...
This Advances in Olefin Polymerization Catalysis symposium was held at the 247th ACS National Meeting and Exposition, March 19, 2014 in Dallas, Texas and consisted of twelve (12) invited/contributed talks. The hosting ACS division was the Division of Catalysis Science and Technology (CATL), and the specific objective of the symposium was to provide a unified, inclusive platform for the dissemination of results pertaining to polyolefin research. This was the only symposium dedicated exclusively...
Topics: DTIC Archive, TENNESSEE UNIV KNOXVILLE, *CATALYSIS, *OLEFIN POLYMERS, *POLYMERIZATION, ACTIVATION,...
The sintering kinetics and the ripening kinetics for RuO2 particles in the presence of a glass phase were studied by measuring surface area, X-ray line broadening, shrinkage, and electrical resistance. Results from these four techniques are interpreted in terms of competing processes which occur during thick film resistor firing. The sheet resistance of thick film resistors as a function of RuO2/glass ratios is reported.
Topics: DTIC Archive, Vest, R W, PURDUE RESEARCH FOUNDATION LAFAYETTE IN, *MICROCIRCUITS, CHARGE TRANSFER,...
Autonomic materials are those that automatically respond to a change in environmental conditions, such as temperature or chemical composition. While such materials hold incredible potential for a wide range of uses, their implementation is limited by the small number of fully-developed material systems. To broaden the number of available systems, we have developed a post-functionalization technique where a reactive Ru Catalyst ink is printed onto a non-responsive polymer substrate. Using a...
Topics: DTIC Archive, AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING...
Topics: DTIC Archive, Dolecek, R L, NAVAL RESEARCH LAB WASHINGTON DC, *CRYOGENICS, MAGNETIC FIELDS,...
Electrical actuator systems are being pursued as alternatives to hydraulic systems to reduce maintenance time, weight and costs while increasing reliability. Additionally, safety and environmental hazards associated with the hydraulic fluids can be eliminated. For most actuation systems, the actuation process is typically pulsed with high peak power requirements but with relatively modest average power levels. The power-time requirements for electrical actuators are characteristic of pulsed...
Topics: NASA Technical Reports Server (NTRS), ELECTROCHEMICAL CAPACITORS, RUTHENIUM, ACTUATORS, ELECTRIC...
Defense Technical Information Archive
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DTIC ADA061871: Photoactivation of Cluster Catalysis: A Comparison of 1-Pentene Isomerization by Tetracarbonyl(Triphenylphosphine)Ruthenium and 1,1,1,2,2,2,3,3,3- Nonacarbonyl-1,2,3-Tris(Triphenylphosphine)-Triangulo-Triruthenium.
Aug 25, 2017
08/17
by
Defense Technical Information Center
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The photocatalyzed isomerization of 1-pentene to trans- and cis-2-pentene by Ru(CO)4PPh3 and Ru3(CO)9(PPh3)3 is reported along with data for Ru3(CO)12, Fe3(CO)12, and Fe(CO)5. The primary photoprocess in Ru(CO)4PPh3 is dissociative loss of CO giving a coordinatively unsaturated species having the same empirical formula Ru3(CO)9(PPh3)3; the trinuclear species undergoes Ru-Ru bond rupture and ultimate declusterification subsequent to photo-excitation giving a quantitative yield of Ru(CO)4PPh3...
Topics: DTIC Archive, Graff,James L, MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMISTRY, *COMPLEX...
