patent us metal cyanide complexes
US Patent for Metal cyanide complexes Patent (Patent # RE ...
Metal cyanide complexes of a single metal or mixed-metal complexes in which a metal is complexed with cyanide. The metals preferably include .[.magnesium
US3904737A - Metal cyanide complexes - Google Patents
Metal cyanide complexes of a single metal or mixed-metal complexes in which a metal is complexed with cyanide. The metals preferably include magnesium
US Patent for Multi-metal cyanide complexes as catalysts ...
Justia Patents Acyclic US Patent for Multi-metal cyanide complexes as catalysts and their use in preparing polyetherpolyols Patent (Patent # 6,303,833)
US3458542A - Heavy metal-diamine-gold cyanide
US3458542A US3458542DA US3458542A US 3458542 A US3458542 A US 3458542A US 3458542D A US3458542D A US 3458542DA US 3458542 A US3458542 A US 3458542A Authority
US Patent Application for Transition Metal Cyanide ...
2020-1-6 · A system, method, and articles of manufacture for a surface-modified transition metal cyanide coordination compound (TMCCC) composition, an improved electrode
Process for the displacement of cyanide ions from metal ...
The present invention is concerned with the displacement of cyanide ion from metal-cyanide complexes and the recovery or destruction of cyanide ions released
MULTI-METAL CYANIDE COMPLEXES AS CATALYSTS -
1998-9-28 · Patent: Publ.of the Int.Appl. with Int.search report - World Intellectual Property Organization Application: WO1998EP06154 on 1998-09-28 Publication: 1999-04-08
Metal, particularly gold, recovery from adsorbed cyanide ...
The invention has particular application to metal values in the form of cyanide ionic complexes. In such complexes the metal values will form part of the
US Patent for Process for preparing two-metal cyanide ...
A process for preparing double metal cyanide catalysts, comprising combining an aqueous solution of a metal salt of the formula M1m(X)n, with an aqueous solution
Detoxification of aqueous cyanide solutions - FMC
1992-1-21 · The patent teaches employing trimercaptotriazine to precipitate metals (Cu, Ni and Fe) from the cyanide complexes prior to treatment with hydrogen peroxide to
Process for the displacement of cyanide ions from metal ...
1997-1-1 · The metal ions of interest are metals that give very strong complexes with cyanide, mostly iron, nickel, and copper. The physical separation of the water-soluble polymer-metal complex from the cyanide ions can be accomplished through the use of ultrafiltration. Once the metal-cyanide complex is disrupted, the freed cyanide ions can be recovered ...
Metal, particularly gold, recovery from adsorbed cyanide ...
The invention has particular application to metal values in the form of cyanide ionic complexes. In such complexes the metal values will form part of the anionic portion of the complex. In the case of gold, the anionic portion will be the aurocyanide anionic complex, Au(CN) 2-. It has been found that desorption of the metal values by the low ...
US Patent for Process for preparing two-metal cyanide ...
A process for preparing double metal cyanide catalysts, comprising combining an aqueous solution of a metal salt of the formula M1m(X)n, with an aqueous solution of a cyanometallic acid of the formula HaM2(CN)b(A)c, where one or both aqueous solutions may comprises at least one water-miscible organic ligand selected from the group consisting of alcohols, aldehydes, ketones, ethers, polyethers ...
Detoxification of aqueous cyanide solutions - FMC
1992-1-21 · The patent teaches employing trimercaptotriazine to precipitate metals (Cu, Ni and Fe) from the cyanide complexes prior to treatment with hydrogen peroxide to destroy the then-free cyanide ions. However, such prior art processes consume too much hydrogen peroxide according to U.S. Pat. No. 4,966,715.
CYANIDE DECOMPLEXING - ORION RES INC,US
A method of decomplexing complexes of the cyanides of Cu +, Ni + + or Cr + + + preparatory to electrochemical measurement of cyanide ion activity. The method involves heating an acidified aqueous solution of the cyanide complex in the presence of a sequestering agent capable of forming, with the metal of the complex, new complexes having stability constants greater than the corresponding ...
Carbon dioxide oxirane copolymers prepared using double ...
The double metal cyanide complexes are used in catalytically effective amounts, that is, any amount which catalyzes the copolymerization of an oxirane and carbon dioxide is suitable. Preferably between about 0.1 and 10 weight percent of the complex based on the oxirane is used, and more preferably between about 2 and 4
US Patent Application for ETHOXYLATE PRODUCTION
2015-4-28 · Justia Patents US Patent Application for ETHOXYLATE PRODUCTION USING HIGHLY ACTIVE DOUBLE METAL CYANIDE CATALYSTS Patent Application (Application #20170081469)
Molecular level photovoltaics. The electrooptical ...
1993-11-18 · The electrooptical properties of metal cyanide complexes anchored to titanium dioxide. Molecular level photovoltaics. The electrooptical properties of metal cyanide complexes anchored to
Fe–Zn double-metal cyanide complexes as novel, solid ...
Fe–Zn double-metal cyanide complexes are currently used as catalysts for the ring-opening polymerization of epoxides, as well as the coupling of epoxides and CO 2 for the production of polycarbonates.We report their novel application as highly efficient solid catalysts for the transesterification reactions of carbonates. The catalysts were prepared from aqueous solutions of ZnCl 2 and K 4 Fe ...
Mixed metal cyanide complexes derived from the
2004-3-25 · The attempted synthesis of cobalt(III)/zinc(II) double metal cyanide complexes for use as homogeneous catalysts for the coupling of CO 2 and epoxides yielded only insoluble mixed metal polymeric chains. However, two interesting cyanide-bridged crystalline structures were produced from these reactions.
Highly active double metal cyanide catalysts - Patent US ...
Highly active double metal cyanide (DMC) catalysts are disclosed. The catalysts comprise a DMC complex, and organic complexing agent, and from about 5 to about 80 wt. %, based on the amount of catalyst, of a polyether having a number average molecular weight greater than about 500.
Process for the displacement of cyanide ions from metal ...
1997-1-1 · The metal ions of interest are metals that give very strong complexes with cyanide, mostly iron, nickel, and copper. The physical separation of the water-soluble polymer-metal complex from the cyanide ions can be accomplished through the use of ultrafiltration. Once the metal-cyanide complex is disrupted, the freed cyanide ions can be recovered ...
Molecular level photovoltaics. The electrooptical ...
1993-11-18 · The electrooptical properties of metal cyanide complexes anchored to titanium dioxide. Molecular level photovoltaics. The electrooptical properties of metal cyanide complexes anchored to
Patent Report: | US9890052 | Method for recovering
2019-6-13 · A process is disclosed for recovering cyanide used to leach gold or silver from ore. In the course of leaching gold or silver from ore, a barren solution is generated. A portion of the barren solution containing sodium cyanide is recycled to the cyanidation process while blowdown from the barren sol
METAL COMPLEXES HAVING VITAMIN B12 AS A LIGAND -
2005-1-10 · The present invention relates to a metal complex of the general formula M(L)n, wherein each L is independently selected and represents a ligand and at least one L is vitamin B12(cyanocobalamin) or a derivative thereof bound through the nitrogen atom of its cyanide group to M, which is an element selected from the transition metals, thus, forming a M-NC-[Co] moiety with [Co] representing ...
Determination of Metal Cyanide Complexes in
2017-9-6 · the metal cyanide complexes of iron, cobalt, silver, gold, copper, and nickel in solid wastes by anion-exchange chromatography with UV absorbance detection. Metal cyanide complexes are solubilized and recovered by an alkaline extraction procedure (SW846 Method 9013) 5.
Metal complexes as cysteine protease inhibitors - Patent ...
Abstract: The invention relates to metal complexes used to bind proteins and enzymes., Author: GRINSTAFF MARK W
Mixed metal cyanide complexes derived from the
2004-3-25 · The attempted synthesis of cobalt(III)/zinc(II) double metal cyanide complexes for use as homogeneous catalysts for the coupling of CO 2 and epoxides yielded only insoluble mixed metal polymeric chains. However, two interesting cyanide-bridged crystalline structures were produced from these reactions.
Determination of Metal Cyanide Complexes by Ion ...
2017-9-6 · most of the metal cyanide complexes is improved by over two orders of magnitude, compared to a direct injection,4 by preconcentrating metal cyanide complexes from a large sample volume onto a trap column before separation. The method was evaluated for reproducibility, linearity, accuracy, precision, and spike recovery from various environmental ...
Fe–Zn double-metal cyanide complexes as novel, solid ...
2006-7-1 · The double-metal cyanide complexes prepared using K 3 Fe(CN) 6 (wherein the iron is in the ferric state) instead of K 4 Fe(CN) 6 were less active. The influence of temperature, methanol/propene carbonate ratio, and catalyst amount on the yield of DMC in the transesterification of PC with methanol is shown in Fig. 9. The yields reported are the ...