Hanwha Chemical Corporation

Skhynix Inc.

Korea Research Institute of Chemical Technology

Joo Hee Han

Jin Seo Lee

Seong Cheol Hong

Seung-Hoe Do

Seung Hoe Do

Gui Ryong Ahn

Gil Ho Kim

Jin Woong Kim

Young Jin Lee

Min Soo Kim

Yong Ki Park

Won Choon Choi

Dong Sun Sheen

Dong Ho Lee

Na Young Kang

Hwi Min Seo

Sung Jin Whang

Seong Yun Jeon

Ki Pung Yoo

Man Woo Jung

Won Ik Lee

Sang Ah Kim

Ji Ho Kim

Young Hae Choi

Joo Seok Oh

Jin Hae Choi

Min Jeong Noh

Woo Hyung Lee

The present invention relates to a gas distribution unit for a fluidized bed reactor system, a fluidized bed reactor system having the gas distribution unit, and a method for preparing granular polysilicon using the fluidized bed reactor system. The gas distribution unit for a fluidized bed reactor system according to the present invention enables gas flow rate control and gas composition control for each zone within the plenum chamber. In addition, a fluidized bed reactor system having the gas distribution unit enables shape control of a fluidized bed (in particular, transition between a bubbling fluidized bed and a spout fluidized bed). The method for preparing granular polysilicon using the fluidized bed reactor system not only simultaneously improves process stability and productivity, but also enables more flexible handling in the event of an abnormal situation.

Gas distribution unit for fluidized bed reactor system, fluidized bed reactor system having the gas distribution unit, and method for preparing granular polycrystalline silicon using the fluidized bed reactor system

A method for preparing trichlorosilane according to an embodiment of the present invention comprises the steps of: supplying surface-modified metal silicide and metal grade silicon to a reaction unit; supplying silicon tetrachloride and hydrogen to the reaction unit; and supplying a product, which is generated by a reaction of metal grade silicon, silicon tetrachloride, and hydrogen in the presence of metal silicide in the reaction unit, to a separation unit, and separating a trichlorosilane component. In cases where a silicon tetrachloride hydrochlorination reaction is performed using the method for preparing trichlorosilane according to the embodiment of the present invention, the yield of trichlorosilane can be raised.

Method for surface-modifying metal silicide, and method and apparatus for preparing trichlorosilane using surface-modified metal silicide

Provided is a heat-dissipating paint composition using a carbon material, the heat-dissipating paint composition including a dispersion solution containing a surface treated carbon material, a heat resistance additive, and an adhesion improving emulsion, so that the heat-dissipating paint composition can have excellent heat dissipation performance and can be applied to various industrial field requiring temperature control.

High-efficiency heat-dissipating paint composition using a carbon material

Provided area carbon nanotube composite material obtained by treating a mixture including carbon nanotubes, at least one carbon compound other than carbon nanotubes and a dispersion medium under a sub-critical or super-critical condition of 50-400 atm, and a method for producing the same. More particularly, the method for producing a carbon nanotube composite material, includes: introducing a mixture including carbon nanotubes, at least one carbon compound other than carbon nanotubes and a dispersion medium into a preheating unit under a pressure of 1-400 atm to preheat the mixture; treating the preheated mixture under a sub-critical or super-critical condition of 50-400 atm; cooling and depressurizing the resultant product to 0-1000 C and 1-10 atm; and recovering the cooled and depressurized product. Provided also is an apparatus for producing a carbon nanotube composite material in a continuous manner.

Blending improvement carbon-composite having carbon-nanotube and its continuous manufacturing method and apparatus

The device includes plural control gates stacked on a substrate, plural first channels, configured to penetrate the control gates, and plural memory layer patterns, each located between the control gate and the first channel, configured to respectively surround the first channel, wherein the memory layer patterns are isolated from one another.

3-dimensional nonvolatile memory device and method of manufacturing the same

A three-dimensional (3-D) nonvolatile memory device includes channel layers protruding perpendicular to a surface of a substrate, interlayer insulating layers and conductive layer patterns alternately formed to surround each of the channel layers, a slit formed between the channel layers, the slit penetrating the interlayer insulating layers and the conductive layer patterns, and an etch-stop layer formed on the surface of the substrate at the bottom of the slit.

3-D nonvolatile memory device and method of manufacturing the same

A continuous method for functionalizing a carbon nanotube includes preparing a carbon nanotube solution containing a nitro compound represented by chemical formula 1 as R&#x2014;(NOx)y wherein R is an alkyl group of C1 to C7 or an aryl group of C6 to C20 and x and y are integers of 1 to 3 independently, a carbon nanotube and a solvent. An oxidizer for forming a nitric acid selected from the group consisting of the carbon nanotube, oxygen, air, ozone, hydrogen peroxide and a mixture thereof is mixed with the carbon nanotube solution at a front end of a functionalizing reactor and the carbon nanotube mixture is fed into the functionalizing reactor. A functionalized carbon nanotube is prepared by treating the carbon nanotube mixture fed into the functionalizing reactor under a subcritical water or supercritical water condition of 50 to 400 atm.

Continuous method and apparatus for functionalizing carbon nanotube

Provided is a continuous method and apparatus of purifying carbon nanotubes. The continuous method and apparatus of purifying carbon nanotubes is characterized in a first purifying step for injecting a carbon nanotube liquid mixture containing an oxidizer into a purifying reactor under a sub-critical water or supercritical water condition at a pressure of 50 to 400 atm and a temperature of 100 to 600&#xb0; C. to obtain a purified product, thereby removing amorphous carbon and producing the carbon nanotube product.

Apparatus for purifying carbon nanotubes

The present invention relates to a continuous method for functionalizing a carbon nanotube, and more specifically, to a continuous method for functionalizing a carbon nanotube by feeding functional compounds having one or more functional group into a functionalizing reactor into which a carbon nanotube mixture including oxidizer is fed under a pressure of 50 to 400 atm and a temperature of 100 to 600&#xb0; C. to a subcritical water or supercritical water condition of a pressure of 50 to 40 atm by using a continuously functionalizing apparatus to obtain the functionalized products, such that the functional group of the functional compound can be easily introduced to the carbon nanotube, thereby increasing the functionalized effect of the carbon nanotube and increasing the dispersibility accordingly.

Continuous method and apparatus of functionalizing carbon nanotube

Provided is a continuous method and apparatus for purifying carbon nanotubes. Carbon nanotube is fed together with solvent into a preheater via a heat exchanger to produce a carbon nanotube mixture. The carbon nanotube mixture is preheated at 100 to 370&#xb0; C. Then, the carbon nanotube mixture is purified in a purifying reactor under a subcritical water condition of 50 to 400 atm. The resulting purified product is cooled down to 0 to 100&#xb0; C. and depressurized into 1 to 10 atm by feeding the purified product into a cooling down and depressurizing part via the heat exchanger. Finally, the cooled and depressurized product is recovered.

Continuous method for purifying carbon nanotube

The present invention relates to a continuous method and apparatus of functionalizing a carbon nanotube, and more specifically, to a continuous method of functionalizing a carbon nanotube under subcritical water or supercritical water conditions without additional functionalizing processes, comprising: a) continuously feeding the carbon nanotube solution and an oxidizer under a pressure of 50 to 400 atm, respectively or together, and then preheating the mixture of said carbon nanotube solution and said oxidizer; b) functionalizing the carbon nanotube in the preheated said mixture under the subcritical water or the supercritical water condition of 50 to 400 atm; c) cooling down the functionalized product into 0 to 100&#xb0; C. and depressurizing the functionalized product into 1 to 10 atm; and d) recovering the cooled down and depressurized product.

Continuous methods and apparatus of functionalizing carbon nanotube

Methods for isolating taxol and derivatives thereof with high purity are described. The methods include a supercritical fluid and a cosolvent extraction step, a liquid&mdash;liquid separation step, and a column chromatography step. An apparatus for isolating Taxol and derivatives thereof that allows the method steps to be performed online also is described.

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Daejeon, South Korea

Joo Hee Han