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6051 results about "Metal-organic framework" patented technology

Metal–organic frameworks (MOFs) are a class of compounds consisting of metal ions or clusters coordinated to organic ligands to form one-, two-, or three-dimensional structures. They are a subclass of coordination polymers, with the special feature that they are often porous. The organic ligands included are sometimes referred to as "struts", one example being 1,4-benzenedicarboxylic acid (BDC).

Preparation method of metal organic framework based composite phase-change material

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.
Owner:UNIV OF SCI & TECH BEIJING

Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein, with application for gas storage

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.
Owner:RGT UNIV OF MICHIGAN

Preparation method of thermal conduction enhanced metal organic framework gas storage material

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.
Owner:UNIV OF SCI & TECH BEIJING

Method for preparing multilevel porous carbon base composite phase change material

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.
Owner:UNIV OF SCI & TECH BEIJING

Preparation method for carbon-containing material metal organic framework-based composite phase change material

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.
Owner:UNIV OF SCI & TECH BEIJING

Preparation method of aromatic polyamide film modified by ZIF-8 type metal-organic framework material

InactiveCN104209021AIncrease fluid channelFacilitate water permeation membraneSemi-permeable membranesPolymer scienceMetal-organic framework
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.
Owner:BEIJING FORESTRY UNIVERSITY
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