摘要:
Metal Organic Framework (MOF) materials and methods of making MOF materials. The methods include grinding of mixtures of metal hydroxide(s) and ligand(s). The MOF materials may have at least two different ligands. The MOF materials may have open metal sites. The MOF materials can be used in gas storage applications.
摘要:
A range of carbon materials can be produced using lignin in combination with synthetic phenolic resins or naturally occurring lingo-cellulosic materials. The lignin, which is essentially a naturally occurring phenolic resin, has a carbon yield on pyrolysis similar to that of the synthetic resins, which aids processing. The lignin can be used as a binder phase for synthetic resin or lignocellulosic materials allowing the production of monolithic carbons from a wide range of precursors, as the primary structural material where the thermal processing is modified by the addition of small quantities of synthetic resin materials or as structure modified in the production of meso/macro porous carbons in either bead, granular or monolithic form. A carbonised monolith is provided comprising mesoporous and/or macroporous carbon particles dispersed in a matrix of microporous carbon particles with voids between the particles defining paths for fluid to flow into and through the structure. The monolith may take the form of a shaped body having walls defining a multiplicity of internal transport channels for fluid flow, the transport channels being directed along the extrusion direction. The monolith may be made by carbonising a shaped phenolic body based on phenolic resin precursors. In a method for producing such a carbonisable shaped resin body solid particles of a first phenolic resin are provided which is partially cured so that the particles are sinterable but do not melt on carbonisation. The particles of the first phenolic resin are mixed with particles of a second phenolic resin that has a greater degree of cure than said first phenolic resin and has a mesoporous and/or macroporous microstructure that is preserved on carbonisation. The resulting mixture is formed into a dough e.g. by mixing the resin particles with methyl cellulose, PEO and water, after which the dough is extruded to form a shaped product and stabilising in its shape by sintering.
摘要:
Soil adsorbing composites, and more particularly to soil adsorbing composites that exhibit improved (lower values) Backscattering Values as measured according to the Soil Flocculation and Settling Test Method described herein compared to non-soil adsorbing composites (such as particulate materials, for example silica and/or pulp fibers, that are not associated with a soil adsorbing polymer), soil adsorbing compositions containing same, processes for making same, and methods for using same.
摘要:
A separation medium consisting of a cyclodextrin metal-organic framework (CD- MOF) for separating aromatic compounds and methods of preparing the same are presented. The method includes one of the following procedures. A bottom-up preparation includes the following steps: (a) preparing a first mixture comprising a cyclodextrin, an alkali metal salt, water and an alcohol; (b) performing one of the following two steps: (i) stirring the first mixture; or (ii) adding an amount of a surfactant to the first mixture to form a second mixture; and (c) crystallizing the CD-MOF from the first mixture or the second mixture. A top-down preparation includes the following steps: (a) preparing a first mixture comprising the cyclodextrin, an alkali metal salt, water and an alcohol; (b) crystallizing the CD-MOF from the first mixture; and (c) optionally performing particle size reduction of the crystallized CD-MOF. The CD-MOFs are amenable for use in methods for separating alkylaromatic compounds and haloaromatic compounds from a mixture of hydrocarbons.
摘要:
It is described a method for controlling the emission of polluting substances in a gaseous effluent produced by a combustion process comprising at least the step of putting said gaseous effluent, at a temperature within the range of 800°C - 1400°C, in contact with a sorbent composition in powder form comprising at least calcium hydroxide (Ca(OH)2), magnesium hydroxide ((MgOH)2) and magnesium oxide (MgO), said sorbent having a specific surface area (BET) greater than 20 m2 /g. A sorbent composition in powder form, said sorbent thermally activated and a process for the preparation of said sorbent composition are also described.
摘要翻译:描述了一种用于控制由燃烧过程产生的气态流出物中的污染物质的排放的方法,该方法至少包括将所述气态流出物在800℃至1400℃的温度范围内与 包含至少包含氢氧化钙(Ca(OH)2),氢氧化镁((MgOH)2)和氧化镁(MgO))的粉末形式的吸附剂组合物,所述吸附剂的比表面积(BET)大于20m 2 / g 。 还描述了粉末形式的吸附剂组合物,所述吸附剂热活化和制备所述吸附剂组合物的方法。
摘要:
The invention disclosed herein provides, Porous Crystalline Frameworks (PCFs) also known as Covalent Organic Frameworks (COFs) of formula (I) that exhibit stability towards, acidic, basic and neutral pH conditions. Further the invention discloses an economical, environmentally-friendly process for the synthesis thereof.