iridium rhenium catalysis

Ruthenium catalysis in organic synthesis* CiteSeerX

niumcatalyzed reactions. Among them, I would like to focus on our findings that lowvalent ruthenium hydride complexes can be used as alternatives to the conventional Lewis acids and bases. Furthermore, using iridium, rhodium, and rhenium hydride complexes, various novel and unique catalytic reactions can be explored.

Iridium Wikipedia

Iridium is a good catalyst for the decomposition of hydrazine (into hot nitrogen and ammonia), and this is used in practice in lowthrust rocket engines; there are more details in …

Rhenium

catalyst market. Rhenium production in the United States decreased by about 10% owing to reduced imports of ... targets, rhodium and rhodiumiridium for hightemperature thermocouples, tungsten and platinumruthenium for coatings on electrical contacts, and tungsten and tantalum for electron emitters. ...

Rhodium(II) acetate Wikipedia

Rhodium(II) acetate is the chemical compound with the formula Rh 2 ... (II)catalyzed regioselective intramolecular and regiospecific intermolecular C–H insertion into aliphatic and aromatic C–H bonds is a useful method for the synthesis of a diverse range of organic compounds.

Advanced Monopropellants Combustion Chambers and ...

Aug 13, 2012· 4 lbf iridium/rhenium/iridium thruster was designed and manufactured for nontoxic AFM315E monopropellant. A metal foam based monolithic catalyst was developed and fabricated. Ignition of AFM315E monopropellant was demonstrated. The thruster was successfully tested for pulses and then 10 second burn.

Coke formation on bimetallic platinum/rhenium and platinum ...

Applied Catalysis, 16 (1985) 16977 169 Elsevier Science Publishers By., Amsterdam Printed in The Netherlands COKE FORMATION ON BIMETALLIC PLATINUM/RHENIUM AND PLATINUM/IRIDIUM CATALYSTS J. BARBIER, G. CDRROa and Y. ZHANGb Facultdes Science, Laboratoire Associau CNRS 350, 40 Avenue du Recteur Pineau, 86022 Poitiers, France.

Catalysts | American Elements | Products | Applications

Previous experiments have shown rhodium and iridium to be the most effective catalyst materials for N 2 O decomposition, but the pure metals are susceptible to oxidation in the extremely high temperature environments, ... Rhenium Catalysts (Acetonitrile)trichlorobis(triphenylphosphine)rhenium(III) Bis(ethylenediamine)dioxorhenium(V) Chloride.

Umicore | Ruthenium

Re Rhenium. Ruthenium. ... These are titanium anodes, coated with ruthenium oxide or, occasionally, a platinum–iridium alloy, more recently an iridium–ruthenium alloy. ... Certain ruthenium salts act as a catalyst in the lowtemperature synthesis of ammonia. Recycling.

Rhenium and iridium (Conference) |

ACS Catalysis. A new type of electrocatalyst with a core–shell structure that consists of a platinum monolayer shell placed on an iridium–rhenium nanoparticle core or platinum and palladium bilayer shell deposited on that core has been prepared and tested for electrocatalytic activity for the oxygen reduction reaction. Carbonsupported ...

Kazuhiko Takai – Research Output — Okayama University

Kazuhiko Takai. Graduate School of Natural Science and Technology; Professor, ... Iridiumcatalyzed dehydrogenative dimerization of benzylmethylsilanes via silylation of C(sp3)H bonds adjacent to a silicon atom ... Rheniumcatalyzed regio and stereoselective synthesis of γthioα,βunsaturated ketones via insertion of terminal alkynes ...

Mechanism of Isomerization and Methyl Migration in ...

Mechanism of Isomerization and Methyl Migration in Heterobimetallic Rhenium−Iridium Complexes: Experimental and ... would serve as an alkane dehydrogenation catalyst affording alkene and iridium hydride. Re would promote DODH of ... rhenium metal center in the Xray structure of 3,24 which is

Metal Catalyst Services Catalyst Reclamation | Houston

Metal Catalyst Resources services industrial producers and refiners by purchasing, recycling, reclaiming, and/or refining the metals contained in their spent catalysts, metal scrap, residues, sludges, and slurries. ... rhodium, rhenium, iridium, ruthenium, gold, and/or silver, with precious metal concentrations ranging from less than 40 ppm ...

Gemini Industries

Providing an unparalleled service for the reclamation of the Precious Group Metals (PGM) comprised of: Platinum, Rhenium, Iridium and Palladium.

Iridium – Rare Metals USA

The most important iridium compounds in use are the salts and acids it forms with chlorine, though iridium also forms a number of organometallic compounds used in industrial catalysis, and in research. Iridium metal is employed when high corrosion resistance at high temperatures is needed, as in highperformance spark plugs, crucibles for ...

Precious Metals Services | BASF Catalysts

BASF is a worldwide leader in the field of precious metals management and offers industrial customers a full loop of price risk management services. The company actively trades in platinum, palladium, rhodium, iridium, ruthenium, gold, silver, and rhenium. More

Catalytic Activity of Platinum Monolayer on Iridium and ...

Carbonsupported iridium–rhenium alloy nanoparticles with several different molar ratios of Ir to Re were prepared by reducing metal chlorides dispersed on Vulcan carbon with hydrogen gas at 400 °C for 1 h. ... Iridium As Catalyst and Cocatalyst for Oxygen Evolution/Reduction in Acidic Polymer Electrolyte Membrane Electrolyzers and Fuel ...

Iridium: Civilian Hero in Precious Metals

Like other platinum metal alloys, iridium alloy can adsorb organic matter and can be used as the catalyst material. Iridium is widely used in aerospace, pharmaceutical, and automotive industries because of its high melting point and strong corrosion resistance.

Liquid Rocket Engines Ultramet

The iridium/rhenium chamber is stateoftheart for NTO/MMH and NTO/N2H4 propellant systems. Since the mid 1990s, Ultramet has sold an average of nearly 10 iridium/rhenium chambers each year for satellite integration and flight, and demand is increasing. These highperformance engines save fuel and expand the possibilities for mission planners.

Incorporation of iridium into electrodeposited rhenium ...

Rhenium–iridium–nickel alloys Electrodeposition Induced ating codeposition a b s t r a c t Rhenium (Re), a refractory metal that has gained significant recognition as a high performance engineering material, is mostly used in military, aircraft and aerospace applications, as well as for catalysis in the petrochemical industry.

Rhenium Bar % (1 troy ounce) – Rare Metals USA

Rhenium in the form of rheniumplatinum alloy is used as catalyst for catalytic reforming, which is a chemical process to convert petroleum refinery naphthas with low octane ratings into highoctane liquid products. Worldwide, 30% of catalysts used for this process contain rhenium.

EWC Code: 16 08 01 | spent catalysts containing gold ...

Waste Desc: Spent Catalyst Containing Gold, Spent Catalyst Containing Silver, Spent Catalyst Containing Rhenium, Spent Catalyst Containing Rhodium, Spent Catalyst Containing Palladium 160801, European Waste Catalogue Code, Waste Code, List of Waste Code ... silver, rhenium, rhodium, palladium, iridium or platinum (except 16 08 07) Entry Type.

ChemInform Abstract: Homogeneous Tungsten, Rhenium, and ...

Read "ChemInform Abstract: Homogeneous Tungsten, Rhenium, and Iridium Catalysts in Alkane Dehydrogenation Driven by Reflux of Substrate or of Cosolvent or by Inert‐Gas Flow., ChemInform" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

BASF Catalysts Metal Prices

Our portfolio ranges from adsorbents, aircraft and confined space air quality, battery materials, energy storage, emissions catalysts, precious metals services, process catalysts, stationary emissions catalysts, temperature sensing and catalytic coatings.

Gemini Industries

Providing an unparalleled service for the reclamation of the Precious Group Metals (PGM) comprised of: Platinum, Rhenium, Iridium and Palladium.