摘要:
Disclosed are an adsorptive permeation hollow fiber membrane formed by uniformly dispersing an adsorbent capable of selectively adsorbing only a specific gas in mixed gas components inside a porous hollow fiber membrane having a sponge structure capable of non-selectively permeating a mixed gas in a powder or crystalline powder form, a method of manufacturing the same, and a gas adsorptive/desorptive separation system utilizing the same.
摘要:
A porous formed composite material comprising: (i) a polymer, or a mixture thereof, said polymer having immobilised therein (ii) an insoluble sorbent material selected from the group consisting of: (a) a cross-linked vinyl lactam homopolymer or copolymer, said vinyl lactam homopolymer or copolymer being optionally mixed with silica gel; and (b) polyvinyl lactam-modified silica gel; is described. Solid phase extraction apparatus incorporating the material and its use in removing polyphenols and/or proteins from beverages to prevent the formation of haze in beverages are also described.
摘要:
Synthesis, fabrication, and application of nanocomposite polymers in different form (as membrane/filter coatings, as beads, or as porous sponges) for the removal of microorganisms, heavy metals, organic, and inorganic chemicals from different contaminated water sources.
摘要:
The invention separating material and separation method make it possible to separate and collect 1,3-butadiene selectively from a mixed gas containing 1,3-butadiene and a C4 hydrocarbon other than 1,3-butadiene. A separating material capable of adsorbing 1,3-butadiene selectively includes: a dicarboxylic acid compound (I) represented by formula (I) (wherein R1, R2, R3 and R4 independently represent a hydrogen atom, an alkyl group or the like); a metal ion such as a zinc ion and a cobalt ion; and a metal complex having such a structure that multiple pseudo-diamondoid frameworks are intruded mutually, wherein each of the pseudo-diamondoid frameworks comprises an organic ligand (II) that is represented by formula (II) (wherein X represents —CH2—, —CH2—CH2—, —CH═CH— or the like; and R5, R6, R7, R8, R9, R10, R11 and R12 independently represent a hydrogen atom, an alkyl group or the like) and is capable of being bidentately coordinated with the metal ion.
摘要:
Methods are provided for synthesizing ZSM-58 crystals with an improved morphology and/or an improved size distribution. By controlling the conditions during synthesis of the ZSM-58 crystals, crystals of a useful size with a narrow size distribution can be generated. Additionally, by controlling the ratio of water content to silica content in the synthesis mixture, it has unexpectedly been found that ZSM-58 crystals can be formed with an improved morphology. The improved morphology can result in ZSM-58 crystals with a more uniform size across the various dimensions of the crystal, which allows for more uniform diffusion within the crystal. This is in contrast to conventionally synthesized crystals, where the size of the crystal can vary along different axes of the crystals.
摘要:
A composition of enzyme, polymer, and crosslinker forms a network of covalently bound macromolecules. The covalently immobilized enzyme preparation has enzymatic activity, and retains stable activity when dried and stored at ambient conditions. Methods for preparing an immobilized enzyme and methods for using the enzyme are disclosed.
摘要:
A filter includes a membrane having pores and that is air permeable. A nanoparticle precursor is dispersed throughout the pores, and the nanoparticle precursor is responsive to a stimulus to form a catalytically active nanoparticle. An associated method is also provided.
摘要:
A composition of matter comprises a carbon-containing matrix. The carbon-containing matrix may comprise one or more carbon materials selected from the group comprising graphite crystalline carbon materials, carbon powder, carbon fibers, artificial graphite powder, and combinations thereof. In addition, the carbon-containing matrix comprises a plurality of pores. The composition of matter also comprises a reactive additive that is not a metal pressure disposed within at least a portion of the plurality of pores.
摘要:
An adaptive membrane structure is provided. The adaptive membrane structure has movable membranes that can be made to change its gas, liquid or particulate permeability in response to surrounding environmental conditions. Such adaptive membrane structures can be used to provide protective apparel that is comfortable to wear wherein the level of protection provided is based on conditions in the environment. The adaptive membrane structures can be used to provide protective enclosures.