摘要:
A process for continuous refining of steel via multiple distinct reaction vessels for melting, oxidation, reduction, and refining for delivery of steel continuously to, for example, a tundish of a continuous caster system, and associated apparatus.
摘要:
A composition for a reduced viscosity hydrophobic thickener system for thickening a polymer-containing aqueous system, a method for providing a reduced viscosity thickener system for a polymer-containing aqueous system, and a method for increasing the viscosity of a polymer-containing aqueous system are disclosed.
摘要:
A method for the formation of a membrane is described. A collection of substantially spherical particles formed from a selected material is contacted with at least one reactive material. The reactive material is cured or otherwise polymerized by various techniques, so that it forms a matrix that substantially surrounds and contains the particles. A portion of the particle material is then removed, so that the matrix contains a pattern of pores that are permeable to selected substances in solution. In some instances, the matrix is formed by an interfacial reaction between at least two reactive materials. Related filtration membranes are also described.
摘要:
A method of synthesizing mechanically resilient titanium carbide (TiC) nano-fibrous felts comprising continuous nanofibers or nano-ribbons with TiC crystallites embedded in carbon matrix, comprising: (a) electrospinning a spin dope for making precursor nanofibers with diameters less than 0.5 μm; (b) overlaying the nanofibers to produce a nano-fibrous mat (felt); and then (c) heating the nano-felts first at a low temperature, and then at a high temperature for making electrospun continuous nanofibers or nano-ribbons with TiC crystallites embedded in carbon matrix; and (d) chlorinating the above electrospun nano-felts at an elevated temperature to remove titanium for producing carbon-derived-carbon (CDC) nano-fibrous felt with high specific surface areas.
摘要:
Proposed is a process for the continuous hydrogenation of carbon-carbon double bonds in an unsaturated polymer to produce a hydrogenated polymer, said unsaturated polymer being based on a conjugated diolefin and at least one other copolymerizable monomer, in the presence of a homogeneous or heterogeneous catalyst, wherein said unsaturated polymer, hydrogen and said homogeneous or heterogeneous catalyst is passed through a multistage agitated reactor, comprising a cylindrical, elongated shell having closed ends and separated by baffles into a multiplicity of discrete chambers with access from one chamber to another through concentric circular openings, axially centered with said baffles and a continuous rotatable shaft extending concentric with said baffles within said shell with at least one impeller attached thereto positioned in each chamber, said continuous rotatable shaft and said circular openings providing annular openings and said hydrogenated polymer being withdrawn at the opposite end of the multistage agitated reactor at which the feed is introduced.
摘要:
A process for continuous refining of steel via multiple distinct reaction vessels for melting, oxidation, reduction, and refining for delivery of steel continuously to, for example, a tundish of a continuous caster system, and associated apparatus.
摘要:
A photoelectrochemical cell may include a cell housing defining an interior volume with a window affixed to the cell housing for allowing the passage of light into the interior volume of the cell. A polymeric film may be affixed within the interior volume defining an anterior compartment and a posterior compartment within the cell housing. A plurality of semiconductor particles embedded continuously within a through thickness of the polymeric film so that a first respective surface area of the plurality of semiconductor particles is exposed to the anterior portion of the cell and a second respective surface area of the plurality of semiconductor particles is exposed to the posterior portion of the cell. The membrane may be immersed within an electrolyte so that incident radiation on the semiconductor particles causes oxidation and reduction to occur within the cell to produce gaseous hydrogen and oxygen.
摘要:
An optical article configured to transform from a pre-activated state of functionality to an activated state of functionality is provided. The optical article includes an optical data layer for storing data, wherein the data is read from the optical data layer in an activated state of functionality, and a material capable of undergoing a morphological transformation being disposed on the optical data layer and adapted to irreversibly alter from a first morphology to a second morphology upon interaction with the external stimulus to alter the state of functionality of the optical article from a pre-activated state to the activated state.
摘要:
A method of synthesizing mechanically resilient titanium carbide (TiC) nanofibrous felts comprising continuous nanofibers or nano-ribbons with TiC crystallites embedded in carbon matrix, comprising: (a) electrospinning a spin dope for making precursor nanofibers with diameters less than 0.5 J·Lm; (b) overlaying the nanofibers to produce a nano-fibrous mat (felt); and then (c) heating the nano-felts first at a low temperature, and then at a high temperature for making electrospun continuous nanofibers or nano-ribbons with TiC crystallites embedded in carbon matrix; and (d) chlorinating the above electrospun nano-felts at an elevated temperature to remove titanium for producing carbide derived carbon (CDC) nano-fibrous felt with high specific surface areas.
摘要:
A separation matrix comprises a porous surface layer; and a bulk porous support, wherein both the porous surface layer and the bulk porous support comprising a block copolymer. The block copolymer comprises A-B or A-B-A repeating units, wherein A and B at each occurrence are two different blocks of oligomer, or polymer. A structural unit of block A is derived from one or more atom transfer radical polymerization (ATRP)-active monomer or oligomer and a structural unit of block B is derived from a thermoplastic ATRP-active macro initiator. A poly dispersity index of the block copolymer is at least about 2.