6082 results about "Metal-organic framework" patented technology

An isoreticular metal-organic framework (IRMOF) and method for systematically forming the same. The method comprises the steps of dissolving at least one source of metal cations and at least one organic linking compound in a solvent to form a solution; and crystallizing the solution under predetermined conditions to form a predetermined IRMOF. At least one of functionality, dimension, pore size and free volume of the IRMOF is substantially determined by the organic linking compound.

The invention relates to a nanometer hole metal-organic frame material in a single-level or multilevel pore canal structure as well as a preparation method and the application thereof. The preparation method comprises the following steps: at least one metal salt and at least one polyfunctional group organic ligand reacts with at least one template agent in at least one solvent under the condition that no hole aid agent exists or only one hole aid agent exist, and single-level or multilevel nanometer holes or channels with the size of 0.5-100 nm exist in at least one direction in the internal space of the obtained metal-organic frame solid. The nanometer hole metal-organic frame material with large hole size and the nanometer hole metal-organic frame material in the layered multilevel pore canal structure can be obtained without the synthesis of the large-size organic ligand and have wide applications.

The ability to design and construct solid-state materials with pre-determined structures is a grand challenge in chemistry. An inventive strategy based on reticulating metal ions and organic carboxylate links into extended networks has been advanced to a point that has allowed the design of porous structures in which pore size and functionality can be varied systematically. MOF-5, a prototype of a new class of porous materials and one that is constructed from octahedral Zn—O—C clusters and benzene links, was used to demonstrate that its 3-D porous system can be functionalized with the organic groups, —Br, —NH2, —OC3H7, —OC5H11, —H4C2, and —H4C4, and its pore size expanded with the long molecular struts biphenyl, tetrahydropyrene, pyrene, and terphenyl. The ability to direct the formation of the octahedral clusters in the presence of a desired carboxylate link is an essential feature of this strategy, which resulted in the design of an isoreticular (having the same framework topology) series of sixteen well-defined materials whose crystals have open space representing up to 91.1% of the crystal volume, and homogeneous periodic pores that can be incrementally varied from 3.8 to 28.8 angstroms. Unlike the unpredictable nature of zeolite and other molecular sieve syntheses, the deliberate control exercised at the molecular level in the design of these crystals is expected to have tremendous implications on materials properties and future technologies. Indeed, data indicate that members of this series represent the first monocrystalline mesoporous organic / inorganic frameworks, and exhibit the highest capacity for methane storage (155 cm3 / cm3 at 36 atm) and the lowest densities (0.41 to 0.21 g / cm3) attained to date for any crystalline material at room temperature.

A gas storage material contains a metal-organic framework that includes a plurality of metal clusters and a plurality of charged multidentate linking ligands that connect adjacent metal clusters. Each metal cluster includes one or more metal ions and at least one open metal site. The metal-organic framework includes one or more sites for storing molecular hydrogen. A hydrogen storage system using the hydrogen storage material is provided.

A method for filling a gap feature on a substrate surface is disclosed. The method may include: providing a substrate comprising a non-planar surface including one or more gap features; depositing a metal oxide film over a surface of the one or more gap features by a cyclical deposition process; contacting the metal oxide with an organic ligand vapor; and converting at least a portion of the metal oxide film to a porous material thereby filling the one or more gap features. Semiconductor structures including a metal-organic framework material formed by the methods of the disclosure are also disclosed.

The growth of continuous MOF membranes on porous polymeric supports is reported, wherein a dip-coating procedure is used to deposit a layer of seed MOF nanocrystals on the surfaces of porous polymers, preferably in the form of hollow fibers, and polycrystalline MOF membranes are subsequently grown at temperatures as low as 65° C. from precursor solutions. The present work opens the road to inexpensive and scalable fabrication of MOF membranes for large-scale separation applications.

Metal-organic framework (MOF)-polymer mixed matrix membranes (MOF-MMMs) have been prepared by dispersing high surface area MOFs (e.g. IRMOF-1) into a polymer matrix (e.g. Matrimid 5218). The MOFs allow the polymer to infiltrate the pores of the MOFs, which improves the interfacial and mechanical properties of the polymer and in turn affects permeability. Pure gas permeation tests show the incorporation of 20 wt-% of IRMOF-1 in Matrimid 5218 polyimide matrix results in 280% improvement in CO2 permeability without a loss of CO2 / CH4 selectivity compared to those of the pure Matrimid 5218 membrane. This type of MOF-MMMs has significantly improved gas separation performance with dramatically high CO2 permeability (>35 barrer) and higher than 29 CO2 / CH4 selectivity at 50° C. under 100 psig pressure, which are attractive candidates for practical gas separation applications such as CO2 removal from natural gas.

A carbon dioxide storage system includes a container and a conduit attached to the container for introducing or removing a carbon dioxide-containing composition from the container. A carbon dioxide storage material is positioned within the container. The carbon dioxide-storage material includes a metal-organic framework, which has a sufficient surface area to store at least 10 carbon dioxide molecules per formula unit of the metal-organic framework at a temperature of about 25° C.

The invention relates to a preparation method of a porous metal organic skeleton material. The porous metal organic skeleton material comprises at least a metal ion and at least an organic compound that can be matched with the metal ion. The material can be prepared by dissolving metal compounds, organic ligand, and sustained-released alkali into a solvent and carrying out direct water (solvent) thermal synthesis at a certain temperature under a certain pressure so as to obtain the porous metal organic skeleton material. The operation of the provided preparation method is simple, the preparation method is suitable for massive industrial production and is suitable for the synthesis of porous metal organic skeleton membrane, and the provided porous metal organic skeleton material is used to absorb, separate, and store gas.

The invention relates to a porous metal organic framework material based on transition metal cobalt and a preparation method thereof. The metal organic framework material is a compound with supramolecular porous network structure and formed by self-assembly of metal ions and organic ligands through coordination complexation. The porous cobalt-based metal organic framework material contains one or more metal ions, and one or more organic ligands; and at least one of the metal ions is Co (II). The porous cobalt-based organic framework material has excellent selective adsorption on CH4 in a separation process of CH4 and N2; and the advantage of adsorption selectivity on CH4 is particularly evident under low pressure. The material is particularly suitable for development and recovery of oil field gas, coal bed methane and biogas.

A gas storage material contains a metal-organic framework that includes a plurality of metal clusters and a plurality of charged multidentate linking ligands that connect adjacent metal clusters. Each metal cluster includes one or more metal ions and at least one open metal site. The metal-organic framework includes one or more sites for storing molecular hydrogen. A hydrogen storage system using the hydrogen storage material is provided.

The invention relates to a preparation method of a metal organic framework based composite phase-change material. The method comprises the steps that a metal organic framework material substrate is prepared selectively; hole diameter size design and hole channel polarity regulation and control are performed on the substrate according to the size and the kind of a core material, so that a phase-change core material to be loaded is matched better; the soluble phase-change core material is prepared into a solution; a metal organic framework material is dispersed in the prepared phase-change material solution; a phase-change material is adsorbed by utilizing an extra-large specific surface area and a nano hole channel structure of the metal organic framework material; drying is performed; and then the metal organic framework composite phase-change material with a shaping effect is obtained. According to the method, a novel metal organic framework based composite phase-change material is developed; the prepared metal organic framework based composite phase-change material can effectively avoid leakage and the like, and has the advantages of adjustable nano hole structure and wide core material selection range; the method is simple in technology and mild in reaction condition, and is suitable for scale production; and a raw material is cheap and easy to obtain.

The subject invention pertains to metal organic frameworks (MOF) having zeolite-net-like topology, their methods of use, and their modes of synthesis. The ZMOFs are produced by combining predesigned tetrahedral building, generated in situ using heterochelation, with polyfunctional ligands that have the commensurate angle and the required donor groups for the chelation. Each molecular building block is contrasted of a single metal ion and ligands with both heterochelation functionality and bridging functionality. Advantageously, zeolite-net-like MOFs of the subject invention are porous and contain large functional cavities, which is useful for encapsulating large molecules.

The ability to design and construct solid-state materials with pre-determined structures is a grand challenge in chemistry. An inventive strategy based on reticulating metal ions and organic carboxylate links into extended networks has been advanced to a point that has allowed the design of porous structures in which pore size and functionality can be varied systematically. MOF-5, a prototype of a new class of porous materials and one that is constructed from octahedral Zn—O—C clusters and benzene links, was used to demonstrate that its 3-D porous system can be functionalized with the organic groups, —Br, —NH2, —OC3H7, —OC5H11, —H4C2, and —H4C4, and its pore size expanded with the long molecular struts biphenyl, tetrahydropyrene, pyrene, and terphenyl. The ability to direct the formation of the octahedral clusters in the presence of a desired carboxylate link is an essential feature of this strategy, which resulted in the design of an isoreticular (having the same framework topology) series of sixteen well-defined materials whose crystals have open space representing up to 91.1% of the crystal volume, and homogeneous periodic pores that can be incrementally varied from 3.8 to 28.8 angstroms. Unlike the unpredictable nature of zeolite and other molecular sieve syntheses, the deliberate control exercised at the molecular level in the design of these crystals is expected to have tremendous implications on materials properties and future technologies. Indeed, data indicate that members of this series represent the first monocrystalline mesoporous organic / inorganic frameworks, and exhibit the highest capacity for methane storage (155 cm3 / cm3 at 36 atm) and the lowest densities (0.41 to 0.21 g / cm3) attained to date for any crystalline material at room temperature.

Provided is a method of manufacturing porous metal oxide, the method including: preparing a metal-organic framework (MOF) wherein an ion of a metal to be used as a catalyst is linked to an organic ligand; impregnating the MOF with a precursor solution of metal oxide to be manufactured; and thermally treating the metal oxide precursor solution-impregnated MOF to remove the organic ligand. The inventive method of manufacturing porous metal oxide involves the impregnation of a metal oxide precursor solution in a MOF wherein metal ions are uniformly linked to organic ligands and the thermal treatment (calcination) of the metal oxide precursor solution-impregnated MOF to remove the organic ligands.

The invention relates to solids made of a porous crystalline metal-organic framework (MOF) loaded with at least one gas of biological interest, and to a method for preparing the same. The MOF solids of the present invention are capable of adsorbing and releasing in a controlled manner gases having a biological interest. They can be used in the pharmaceutical field and / or for applications in the cosmetic field. They can also be used in the food industry.

The invention provides a metal organic framework / polymer nanofiber composite membrane material and a preparation method thereof. The metal organic framework / polymer nanofiber composite membrane material is characterized by being prepared from a polymer nanofiber membrane; a metal organic framework layer grows on the surfaces of nanofibers in the polymer nanofiber membrane. The preparation method is characterized by comprising the steps of firstly preparing the polymer nanofiber membrane, hydrolyzing the polymer nanofiber membrane, and putting the hydrolyzed polymer nanofiber membrane into a precursor solution of a metal organic framework to enable the metal organic framework to grow on the polymer nanofiber membrane so as to obtain the metal organic framework / polymer nanofiber composite membrane material. The metal organic framework / polymer nanofiber composite membrane material has great application potential in the fields such as gas adsorption and separation, catalysts, sensors and electrode materials.

The invention discloses a metal catalyst based on a metal organic framework as well as a preparation method and application thereof. Metal salt and organic ligand are used for preparing the metal organic framework (MOF), and then the MOF is used as a precursor to be reduced to obtain the metal catalyst. The catalyst based on the MOF in the invention has high catalytic activity, good circularity and excellent catalytic property while being used as the catalyst of NH3BH3 hydrolysis hydrogen discharging reaction, thus having significant application value and wide application prospect in the field of catalyst and hydrogen storage technology.

The invention relates to a preparation method of a thermal conduction enhanced metal organic framework gas storage material and belongs to the field of nanocomposites. The preparation method comprises the following steps: firstly selectively preparing a metal organic framework material with a large surface area and a high micropore proportion; performing synthesis post-modification on the metal organic framework material by a 'one-pot' method, regulating the polarity and contained functional groups of pores, immobilizing metal nanoparticles inside the pores to enhance the thermal conduction property of the metal organic framework material; adsorbing industrial gas by utilizing the ultra-large specific surface area and the nano duct structure of the metal organic framework material, wherein the thermal conduction enhanced adsorption material can be used for quickly transmitting the heat generated in the adsorption and desorption process of the industrial gas. The metal organic framework industrial gas adsorber prepared by the invention can be used for efficiently adsorbing and desorbing the industrial gas and effectively improving the thermal conduction property of the adsorber, and avoiding the influence of the heat effect on the adsorption quantity in the adsorption and desorption process. The preparation method provided by the invention has the advantages of use of readily available and inexpensive raw materials, simple process, and mild reaction conditions and is suitable for large-scale production.

Disclosed are metal organic frameworks that adsorb nitric oxide, NO-loaded metal organic frameworks, methods of preparing the NO-loaded metal organic frameworks, methods of releasing the nitric oxide into a solution or into air, and uses of the metal organic frameworks.

Metal-organic framework (MOF)-polymer mixed matrix membranes (MOF-MMMs) can be prepared by dispersing high surface area MOFs into a polymer matrix. The MOFs allow the polymer to infiltrate the pores of the MOFs, which improves the interfacial and mechanical properties of the polymer and in turn affects permeability. These mixed matrix membranes are attractive candidates for practical gas separation applications such as CO2 removal from natural gas.

The present invention provides a metal-organic framework (“MOF”) comprising a plurality of metal clusters and a plurality of multidentate linking ligands. Each metal of the plurality of metal clusters comprises one or more metal ions. Each ligand of the plurality of multidentate linking ligands connects adjacent metal clusters. The present invention also provides a method of forming the metal-organic framework. The method of the invention comprises combining a solution comprising one or metal ions with a multidentate linking ligand having a sufficient number of accessible sites for atomic or molecular adsorption that the surface area of the resulting metal-organic framework is greater than 2,900 m2 / g.

The invention provides a metal organic framework material used for absorbing and separating CO2 and a preparation method thereof. The metal organic framework material is a rigid metal carboxyl compound cluster-like structure which is formed by transition metal ions and multidentate organic ligands through covalent bonds and intermolecular forces. An amine polymer is modified on the metal organic framework material; and the metal organic framework material used for absorbing and separating the CO2 has a specific surface area of 1,000 to 1,200 m<2> / g, and a pore volume of 0.4 to 0.6 cm<3> / g. The preparation method comprises the following steps of: respectively dissolving the nitrate, the chloride or the carbonate of copper or zinc and 1,3,5-trimesic acid together in a stoichiometric ratio in water or an organic solvent; mixing uniformly and sufficiently to react to obtain a BTC bridged complex crystal; and applying a product obtained by reacting an obtained BTC bridged complex crystal with the solution of polyethyleneimine to the metal organic framework material used for absorbing and separating the CO2. The material can realize selective absorption of a gas under a low pressure.

The invention provides a method for preparing a multilevel porous carbon base composite phase change material, and belongs to the field of composite phase change materials. The method comprises the following steps: at first, preparing an organic metal skeleton material by using such methods as a solution method, a solvothermal method or a stirring synthesis method; with the organic metal skeleton material as a template, high temperature carbonizing under the protection of an inert gas, and changing the carbonizing temperature and the post treatment manner to obtain a multilevel porous carbon material with a super-large specific surface area and a super-large pore volume; selecting proper solvents according to different kinds of phase change core materials, preparing the phase change core materials to a solution, dispersing the porous carbon material into the solution, removing the solvent by such manners as heating, and meanwhile the phase change core materials are adsorbed and limited in the porous carbon material. The composite phase change material prepared by the method provided by the invention has good thermal storage property, can effectively avoid the leakage problem of the phase change core material, and has the advantages of excellent heat transfer property, good cycling stability and wide application range, and the process is simple and is suitable for large-scale production.

The invention discloses a preparation method for a carbon-containing material metal organic framework-based composite phase change material and belongs to the field of nano composite materials and composite phase change materials. The preparation method comprises the following steps: carrying out in-situ growth of MOFs particles on a polyvinylpyrrolidone (PVP)-modified carbon material surface by adopting a hydrothermal method to prepare a carbon-containing material metal organic framework-based porous carrier material; then, dispersing a carbon material @MOFs porous carrier material into a prepared solution containing a phase change core material by adopting a solution dipping method; adsorbing a phase change core material by utilizing an oversized specific surface area of the metal organic framework material and a nao duct structure; and drying at a temperature higher than the phase change material to obtain the carbon-containing material metal organic framework-based composite phase change material. The material can be used for improving the heat transfer performances of the composite phase-change material, effectively preventing core material leakage, and has the advantages of wide core material selection range. The composite phase change material prepared by the method provided by the invention is excellent in heat transfer performance, good in circulating stability, simple in process and suitable for large-scale production.

A rapid, simple and versatile metal organic framework molecule (MOF) synthesis method particularly adapted to make non-linear MOFs includes heating MOF precursors, such as a metal or metal oxide and an organic ligand, in a microwave oven for a period sufficient to achieve crystallization. Microwave-assisted MOF synthesis yields high quality MOF crystals in a reaction time ranging from about 5 seconds to about 2.5 minutes, compared to hours and days required in conventional solvothermal and hydrothermal methods. In addition, microwave assisted methods provide MOF materials with uniform crystal size and well-defined shape. Further, microwave synthesis of MOFs allows the size and shape of MOF crystals to be tailored for use in a wide range applications by manipulating reaction conditions. Secondary growth processes may also be employed to grow larger crystals using seeds obtained from microwave-assisted synthesis methods.

The invention discloses an application of a metal-organic framework functional material, and belongs to the technical field of water processing. A metal-organic framework material is subjected to pre-modification and post-modification, and a series of different functional groups are introduced to an organic ligand or an inorganic metal cluster of the material. The metal-organic framework functional material is used as an adsorbent for removing radioactive ions from nuclear waste. The metal-organic framework material containing sulfate radicals and sulfonate radicals has a preferable adsorption effect on 133Ba<2+>; the maximum removal rate can reach 99.9%; and adsorption equilibrium can be achieved in 5min. By using the functionalized metal-organic framework material, a simple, easy, efficient, and fast novel method is provided for removing 133Ba<2+> from the nuclear waste. The metal-organic framework functional material has significant industrial application value with respect to nuclear pollution management.

The present invention involves the use of certain metal organic frameworks that have been treated with water or another metal titrant in the storage of carbon dioxide. The capacity of these frameworks is significantly increased through this treatment.

The invention discloses a preparation method of an aromatic polyamide film modified by a ZIF-8 type metal-organic framework material. A ZIF-8 filling polyamide composite film is prepared on an ultrafiltration bottom film by an interfacial polymerization method, wherein nano-grade ZIF-8 particles are added into an m-phenylenediamine aqueous solution and / or a trimesoyl hexane solution; a polyamide ultrathin skin layer, to which ZIF-8 is added, is formed through interfacial polymerization. The preparation method has the advantages that by the use of a ZIF-8 nano-grade aperture and a three-dimensional multi-hole structure, the selectivity or the permeability of the aromatic polyamide film is improved; the prepared ZIF-8 filling polyamide composite film can serve as a nanofiltration or reverse osmosis film for removing organic matters from the aqueous solution; when the adding ratio of an organic phase or water phase solution, to which ZIF-8 is added, is 0.05-0.15% (w / v), the performance of the film is the highest, and the permeation flux and the retention rate can be increased at the same time; furthermore, the nanofiltration or reverse osmosis performance of the two-phase adding film is higher than that of a single-phase adding film.

The invention discloses a method for rapidly synthesizing a BTC (1,3,5-benzenetricarboxylic acid)-based nanoscale organometallic framework material at room temperature. The nanomaterial is prepared by the following steps: mixing metal acetate aqueous solution with BTC solution at room temperature, and reacting to obtain BTC-based organometallic framework nanoparticles. The method is rapid, simple and energy-saving; the yield is high; the used raw materials and solvents are inexpensive and easily available; the safety problem of commonly used nitrate is not caused; the method is favorable to the industrial production and has wide application prospects in the fields of catalysis, adsorption, drug carriers, building of nano devices and the like.