89results about "Iron organic compounds" patented technology

Described herein is a catalyst comprising a nitrogen-doped carbon matrix, iron atoms, iron carbide particles, and carbon nanotubes, wherein the carbon nanotubes are dispersed and bonded to the nitrogen-doped carbon matrix, the iron atoms, and the iron carbide particles are dispersed and bonded to the nitrogen-doped carbon matrix and / or the carbon nanotubes. The catalyst may be used to coat an electrode for use in an electrochemical cell and electrolysis.

The invention relates to a non-gadolinium magnetic resonance contrast agent and a preparation method thereof, and belongs to the field of contrast agents. The invention aims to provide a non-gadolinium contrast agent with high biological safety aiming at the risks of renal fibrosis and cerebral deposition existing in a gadolinium-based magnetic resonance contrast agent. The invention provides a phosphate group modified non-gadolinium magnetic resonance contrast agent. The phosphate group modified non-gadolinium magnetic resonance contrast agent consists of a ligand of a phosphate group substituted trans-cyclohexanediamine tetraacetic acid derivative (tmPCDTA or tqPCDTA) and metal ions Fe < 3 + > or Mn < 2 + >, the contrast agent disclosed by the invention is high in biological safety: endogenous Fe < 3 + > / Mn < 2 + > is used for replacing gadolinium, and cell experiments prove that the survival rate of 4T1 cells is not influenced at the concentration of 500 mu M; clinical applicability is high, kidney excretion is rapid, bladder signals are enhanced 3-5 minutes after mouse intravenous injection, and liver retention is avoided.

The application discloses a method for synthesizing tervalent tetraaryl iron porphyrin from pyrrole, aromatic aldehyde and ferrous salt, which comprises the following steps: adding anhydrous aluminum chloride, aromatic aldehyde, pyrrole and ferrous salt into DMF under stirring, and then heating and refluxing the reaction mixture for 0.5 hours under nitrogen; removing the nitrogen and continuing to heat the reaction mixture for a certain time; stopping the reaction; cooling the reaction mixture; and placing the reaction mixture at 273K overnight; and finally filtering the reaction mixture to obtain the iron porphyrin.

The application relates to the technical field of fine chemical synthesis, and discloses a PDI catalyst for preparing cresol trisiloxane, a preparation method and a preparation method of cresol trisiloxane. Me PDI)FeBr2, sodium and nai are dissolved in an ultradry solvent, and the reaction is stirred under a nitrogen atmosphere; the reaction product is post-treated to obtain a PDI catalyst; 2-(2'-hydroxy-3'-methylethenyl-5'-methylphenyl) benzotriazole and the PDI catalyst are dissolved in an organic solvent, the temperature is increased to 50-60 DEG C, bistrimethylsiloxy methylsilane is added dropwise, and the reaction is preserved for 6-10 h; the organic solvent is removed by concentration under reduced pressure, and crystallization is carried out to obtain cresol trisiloxane. The iron complex catalyst is used to replace the traditional platinum catalyst, the material cost is reduced, the risk of heavy metal residue can be avoided, a small amount of the iron complex catalyst can be used, and higher catalytic activity and selectivity can be realized.

The application provides a flexible ortho-aryloxy cycloalkyl substituted pyridine diimine iron and cobalt complex catalyst and a preparation method and application thereof, and belongs to the technical field of olefin polymerization catalysis; a series of 2,4,6-tricycloalkyl arylamine compounds are introduced into 2,6-diacetyl pyridine, and with the change of the space volume of the cycloalkyl, the molecular weight and distribution of polyethylene can be controlled; the substituents in the complex are selected from cycloalkyl, and under the protection of a gas atmosphere, the ligand is reacted with FeCl2.4H2O and CoCl2.6H2O respectively to obtain the complex catalyst of the present application; the complex exhibits extremely high polymerization activity, up to 1.76*10 7 g / mol.h, and generates high linear polyethylene with different molecular weight ranges; and has good industrial potential.

To provide a method for preparing an in situ metal doped manganese iron oxalate precursor.SOLUTION: Iron source, manganese source, doped metal elements (Mg, Zn, etc.) are weighed according to a stoichiometric ratio, and deionized water is added to the weighed metal to ultrasonically dissolve the weighed metal to obtain a mixed metal solution. The mixed metal solution is added to a prepared oxalic acid solution and subsequently a certain concentration of complexing agent is added to the solution to perform co-precipitation reaction under the protection of inert gas. A resultant suspension of metal doped manganese iron oxalate is recovered and then filtered, washed and dried to obtain a powder of manganese iron oxalate precursor.EFFECT: By using the manganese iron oxalate precursor as the iron and manganese sources, this can effectively avoid the problem of uneven mixing due to the iron and manganese sources. Moreover, lithium manganese iron phosphate synthesized from the manganese iron oxalate precursor after metal doping can significantly improve the electronic conductivity, thereby enhancing the electrochemical properties of lithium manganese iron phosphate.SELECTED DRAWING: Figure 1

This invention discloses an iron complex with a triazacyclic nonane macrocyclic skeleton, its preparation method, and its applications, belonging to the field of coordination chemistry. The iron complex has a triazacyclic nonane macrocyclic skeleton with two acetate side groups and one pyridine-N derivative side group. The iron complex exhibits excellent catalytic activity in the aerobic oxidation of N-aryltetrahydroisoquinoline, while also possessing good stability. The solvents for the catalytic reaction are water and acetonitrile, resulting in low pollution. This invention features mild reaction conditions, simple synthesis operations, and straightforward post-processing, meeting the requirements of environmental friendliness and clean production.

The invention discloses a low-background iron-based magnetic resonance contrast agent and a synthesis method and application thereof.According to the low-spinning ferrous iron-based contrast agent, a group capable of breaking bonds through a biological orthogonal catalytic reaction is introduced, amine is generated through biological orthogonal catalytic cracking, obtained aniline is unstable, then 1, 6-elimination occurs in molecules, triazole groups are removed, and the contrast agent is prepared. And then the rest part of the plumbing arm is cracked to finally become a high-spinning ferrous contrast agent. The relaxation rate of the contrast agent is improved through conversion of high and low spin states, low-background activation is achieved, the contrast ratio of magnetic resonance imaging signals is improved, and imaging of a focus area is expected to achieve early detection of serious diseases.

This application discloses a dialkylphosphine hybrid salt, its preparation method, and its application. The dialkylphosphine hybrid salt is selected from at least one compound having the chemical formula shown in formula (I). The dialkylphosphine hybrid salt with the composition of formula (I) provided in this application requires a small amount to add, has high flame retardant efficiency for various polymer materials, and is economical. It not only overcomes the disadvantage of low flame retardant efficiency of diethylphosphine salt for polymer materials, but also overcomes the disadvantage of excessive volatility and low flame retardant efficiency of diisobutylphosphine salt for polyesters. It can be widely used in the flame retardant application of various polymer materials that require high-temperature processing.

The present application relates to a kind of methods for adsorbing and separating propylene and propane, which includes the adsorption separation of propylene and propane with metal organic framework, wherein the metal organic framework material is formed by the coordination assembly of divalent metal ion, malic acid and pillar supporting ligand.The metal organic framework material involved in the present application is stable in structure and performance, has high adsorption capacity for propylene, can realize the efficient thermodynamic-kinetic synergistic separation of propylene and propane, and the adsorption performance remains the original effect after repeated adsorption-regeneration multiple times.The performance in the adsorption separation of propylene and propane is far superior to most solid adsorbents.

The invention discloses an iron complex with a triazacyclononane macrocyclic skeleton as well as a preparation method and application of the iron complex, and belongs to the technical field of coordination chemistry. The iron complex has a triazacyclononane macrocyclic skeleton, and is attached with two acetate side groups and one pyridine-N derivative side group; the iron complex shows excellent catalytic activity in the aerobic oxidation reaction of N-aryl tetrahydroisoquinoline and has good stability, solvents for the catalytic reaction are water and acetonitrile, and pollution is small. The method is mild in reaction condition, simple in synthesis operation and simple in post-treatment, and meets the requirements of environment friendliness and clean production.

The invention provides a complex, a catalyst composition, a preparation method and application and an ethylene oligomerization reaction method, and relates to the technical field of ethylene oligomerization. The structural formula of the complex is shown as a formula (I), in the formula (I), R1-R13 are the same or different and are independently selected from any one of hydrogen, C1-C6 alkyl, halogen, C1-C6 alkoxy, nitryl and C6-C10 aryl; and R14-R16 are the same or different and are respectively and independently hydrogen or C1-C20 alkyl groups. The complex can be completely dissolved in an organic solvent, the concentration of the complex can be accurately metered in industrial operation, and stable operation of the reaction is ensured. The catalyst composition comprises the complex, so that under the action of the catalyst composition, the ethylene oligomerization reaction is rapid in initiation, stable in operation and good in repeatability.

The invention discloses a metal carborane quaternary ammonium salt compound as well as a synthesis method and application thereof. The structural formula of the compound is as shown in a formula I in the specification. According to the synthesis method, n-hexyl carborane is taken as a starting raw material and is subjected to four-step efficient reaction, and the synthesis method comprises the following steps: 1, carrying out boron removal reaction to generate a nested carborane intermediate; 2, preparing trimethylamine salt and converting the trimethylamine salt into carborane trimethylamine salt; 3, carrying out coordination reaction on the carborane trimethylamine salt and ferrous chloride to form a metal carborane precursor; and 4, further processing to finally form the target metal carborane quaternary ammonium salt compound. The compound disclosed by the invention shows potential application value in the fields of homogeneous catalysis, solid propellant burning rate regulation and control and the like. I.

This decomposition catalyst is used for the decomposition of an organic fluorine compound. This decomposition catalyst has a carrier and a complex. The complex is supported by the carrier. The carrier is composed of a conductor or a semiconductor. The complex is represented by formula (1) and is formed of a transition metal and a π-electron-containing organic ligand. The organic fluorine compound may be a perfluoroalkyl compound and / or a polyfluoroalkyl compound. In formula (1), M may be at least one element that is selected from the group consisting of Mn, Fe, Co, Ni, Cu, Ru, Rh, Cr, V, Mo, Re, and Os.　

Disclosed is a method for preparing a metal-carbon composite. The method includes synthesizing a planarized ligand compound via planarization-modification of a polyphenol-based ligand compound; synthesizing a metal-organic composite via hydrothermal synthesis of a mixed solution of the planarized ligand compound and metal ions; drying the metal-organic composite to prepare precursor powders; and carbonizing the precursor powders.

A heterocycle-containing amino acid compound of formula (1) or a salt thereof:may be substituted such that n is 1, 2, or 3, and R1 is a hydrogen atom, —OH, —NH2, —NH—CO—CH3, —NH—CO—CH2OH, or —NR2—(CH2)m—COOH, with m as 1 or 2, and R2 is a hydrogen atom or a methyl group. A complex may include such a heterocycle-containing amino acid compound or a salt thereof and a metal element.

The invention relates to processes for the removal of iron impurities and optionally other impurities from rare earth metal-containing compositions such as rare earth metal-containing compositions from magnets and ores.

A redox-active modified metal-organic framework There is provided an electrode comprising a substrate coated with a redox-active modified metal-organic framework (MOF), wherein the redox-active modified MOF is a ferrocene-functionalised MOF. There is also provided an electrosorption unit comprising the electrode and a method of separating at least one target molecule from a fluid source using the electrode.

To provide a novel metal-organic framework with a gas storage function, and a gas storage agent and a gas storage method using the same.SOLUTION: The invention provides a metal-organic framework in which a polyvalent metal ion is bonded to a dianion of a compound represented by formula (1).SELECTED DRAWING: None

To provide a method for manufacturing MOF by reaction of metal and an organic compound.SOLUTION: A method for manufacturing a metal organic structure includes obtaining a metal organic structure by carrying out mechanochemical treatment of an object including a metal that serves as a metal ion source, and an organic compound that serves as a cross-linking ligand. The mechanochemical treatment is carried out under conditions where at least a part of the metal is solid and at least a part of the organic compound is solid.SELECTED DRAWING: None

The invention discloses a bimetallic heteronuclear complex as well as a preparation method and application thereof, and relates to the technical field of environmental catalytic materials and preparation. The complex is prepared by adopting a two-step method of'pre-complexing first and bridging later ', under the protection of inert gas, two metal precursors and a terminal ligand are respectively subjected to primary coordination and premixing under an acidic condition, then a bridging ligand is added, a bridging reaction is completed in a weak alkaline environment, and a product is obtained through precipitation and drying. And ball-milling and mixing the complex and a carrier, and then carrying out heat treatment to prepare the bimetallic supported catalyst. The catalyst plays a synergistic effect by constructing atomic-scale dispersed bimetallic active sites, shows a wide active temperature window, high activity and selectivity in denitration, N2O decomposition and CO catalytic oxidation reaction, has excellent sulfur resistance and hydrothermal aging resistance, is suitable for various carriers and reactions, is controllable in cost, and provides a new path for purification of atmospheric pollutants.

A substrate processing apparatus includes: a chamber; and a processing gas supply unit connected to the chamber via a processing gas supply flow path and configured to supply a processing gas. The processing gas supply unit includes a raw material cartridge that includes a raw material tank that accommodates a porous member containing a metal-organic framework adsorbed with gas molecules of a raw material of the processing gas; a main body configured to communicate the raw material tank and the processing gas supply flow path with each other when the raw material cartridge is attached; and a desorption mechanism configured to desorb the gas molecules of the raw material of the processing gas and allow the gas molecules to flow out as the processing gas to the processing gas supply flow path while the raw material cartridge is attached to the main body.

High purity bis (arene) metal complexes and related methods and related compositions are provided. Compositions are provided comprising a bis (arene) metal complex having a purity of at least 95%. Methods for purifying bis (arene) metal complexes are provided. Methods for producing bis (arene) metal complexes at high conversion are also provided.

The invention provides an iron complex, a catalyst composition, a preparation method and application and an ethylene oligomerization reaction method, and relates to the technical field of ethylene oligomerization. The structural formula of the iron complex is shown in the formula (I), in the formula (I), R1-R6 and R9-R11 are the same or different and are independently any one of hydrogen, C1-C6 alkyl, halogen, C1-C6 alkoxy and nitryl; r7 is selected from any one of hydrogen, C1-C6 alkyl groups, halogen, C1-C6 alkoxy groups, C6-C15 aryl groups and nitryl groups; r8 and R12 are the same or different and are independently selected from any one of hydrogen, C1-C6 alkyl, halogen, C1-C6 alkoxy and nitro respectively; and R13 and R14 are the same or different and are selected from C1-C20 alkyl groups. The iron complex can be completely dissolved in an organic solvent, and the concentration of the iron complex can be accurately metered in industrial operation, so that stable operation of reaction is ensured. The catalyst composition comprises the iron complex, so that under the action of the catalyst composition, the ethylene oligomerization reaction is rapid to initiate, stable in operation and good in repeatability.

The application discloses an organic metal complex and a preparation method and application thereof. The organic metal complex is synthesized based on 2-(thiophene-2-yl)thiazole and is added to an active layer of an organic solar cell as a novel solid additive. The power conversion efficiency of the organic solar cell to which the additive is added is significantly improved. When the thickness of the active layer reaches 300 nanometers, the power conversion efficiency is still relatively high. In particular, the effect of the TTz-Pt additive is particularly remarkable. When the thickness of the active layer reaches 300 nanometers, the conversion efficiency can reach 18.84%. The application provides a simple and effective method, effectively prolongs the exciton diffusion length, realizes the preparation of a high-efficiency thick-film organic solar cell, and promotes the commercialization of the organic solar cell.

The invention discloses a terpyridyl ferrous catalyst derived from terthiophenes and application of the terpyridyl ferrous catalyst in photocatalysis of CO2. The catalyst has a structure as shown in a formula I. According to the catalyst, a light capture unit terthiophene is integrated to a terpyridyl ferrous catalytic center through molecular design to form an integrated structure with a self-sensitization function, and the preparation method comprises the following steps: condensing 2, 2 ': 5', 2 ''-trithiophene-5-formaldehyde and 2-acetylpyridine under an alkaline condition to obtain a ligand; and coordinating with ferrous chloride to obtain the target catalyst. According to the present invention, in the photocatalytic CO2 reduction reaction, the efficient catalysis can be achieved without the addition of the noble metal photosensitizer, the CO conversion number is up to 642, the selectivity exceeds 98%, and the low-cost and high-activity new scheme is provided for solving the dependence on the noble metal in the prior art.

The present invention relates to the field of adsorbent materials, and specifically to the use of metal-organic particles (MOF), intended for the selective adsorption of germanium ions in aqueous solutions. The invention also relates to a method for adsorbing Ge ions.

The present compound is a heterocycle-containing amino acid compound represented by a general formula (1) or a salt thereof. In the formula (1), n is 1, 2, or 3, and R1 represents a hydrogen atom, -OH, -NH2, -NH-CO-CH3, -NH-CO-CH2OH,or -NR2-(CH2)m-COOH, where m is 1 or 2, and R2 represents a hydrogen atom or a methyl group. The present complex includes the heterocycle-containing amino acid compound or a salt thereof and a metal element.

The invention provides an iron-based complex, a preparation method thereof and an ethylene oligomerization catalyst. The iron-based complex is formed by coordination of a ligand and an iron compound, the ligand has a structure as shown in a formula I. In the formula I, R1 and R1'are the same or different and are independently selected from H, C1-C4 alkyl and derivatives thereof, and when the iron-based complex and a cocatalyst form an ethylene oligomerization catalyst and are used for ethylene oligomerization, the generation amount of a byproduct polymer can be reduced.