Lg Chem, Ltd

Electronics and Telecommunications Research Institute

Seungyong Lee

Jihee Woo

Dong Hyun Cho

Hyungsik Jang

SungJin Kim

Kyung Yeon Kang

KyungYeon Kang

Jinmyung Cha

Dongchul Lee

Seungyong Son

Kibom Kim

Hyunuk Hwang

Sang Hoon Choy

Hyun Woo Park

Eugene Oh

Yelin Kim

Kwang Woo Yoon

Seokwon Kim

Donghyun Cho

Ogsin Kim

KwangWoo Yoon

JaeKeun Yoon

Seongtaek Chee

The present invention relates to an impregnated supported catalyst, a carbon nanotube aggregate, and a method for producing the carbon nanotube aggregate. The carbon nanotube aggregate includes a four-component catalyst in which catalytic components and active components are supported on a granular support, and bundle type carbon nanotubes grown on the catalyst. The carbon nanotube aggregate has an average particle diameter of 100 to 800 &#x3bc;m, a bulk density of 80 to 250 kg/m, and a spherical or potato-like shape.

Supported catalyst, carbon nanotube assembly, and preparation method therefor

The apparatus for manufacturing carbon nanotube pellets according to the present invention provides carbon nanotube pellets with increased apparent density by using only a small amount of solvent. The carbon nanotube pellets produced by the apparatus according to the present invention can improve various problems generated by scattering of powders. And since the density of the pellet form is high, transport, transfer and improvement become easier. Therefore, it can be more effectively applied to the manufacturing of composite materials.

Apparatus for manufacturing carbon nanotube pellets

A method and an apparatus for recovery of a file system using metadata and data clusters. The apparatus for recovery of a file system generates an MFT entry list in a disc or an evidence image, collects at least one data cluster candidate, and uses at least one MFT entry and at least one data cluster candidate within the MFT entry list to generate at least one MFT entry-data cluster pair candidate. The apparatus for recovery of a file system analyzes the at least one MFT entry-data cluster pair candidate to determine attribute values of a virtual partition and generate the virtual partition based on the attribute values.

Method and apparatus for recovery of file system using metadata and data cluster

The present invention relates to a device for drying and collecting a product such as a carbon nanotube pellet or aggregate, which can accelerate solvent evaporation by inserting and dispersing high temperature gas into a drying column as well as by a heat source inside and outside of the column, and can quickly remove the evaporated solvent. Further, the device can be used for drying and collecting processes while minimizing product breakage by regulating the gas flow rate and controlling flow of the product in the column. Thus, the device can be effectively applied to mass production of a carbon nanotube pellet product.

Device for drying and recovering carbon nanotube product and method for manufacturing carbon nanotube using same

The present invention relates to a supported catalyst that can be used to produce a carbon nanotube aggregate with high bulk density, a method for preparing the supported catalyst, a carbon nanotube aggregate produced using the supported catalyst, and a method for producing the carbon nanotube aggregate. According to the present invention, the bulk density of the carbon nanotube aggregate is easily controllable. Therefore, the carbon nanotube aggregate is suitable for use in various fields.

Method for manufacturing carbon nanotube agglomerate having controlled bulk density

The method for producing carbon nanotube pellets according to the present invention can reduce the particle size of the carbon nanotubes contained in the pellet by a repetitive extrusion process to produce pellets having improved dispersion characteristics in a solvent. The present invention can improve the problems of the change of the content generated by scattering of powders and safety issues by using carbon nanotubes in the form of pellet. And since the density of the pellet form is higher than that of the powder form, transport, transfer and improvement become easier. Therefore, it can be more effectively applied to the manufacturing of composite materials.

Carbon nanotube pellets and method for manufacturing same

The carbon nanotube pellets according to the present invention are produced by using only a small amount of solvent and have increased apparent density. The present invention can improve the problems of the change of the content generated by scattering of powders and safety issues by using carbon nanotubes in the form of pellet rather than carbon nanotubes in the form of powder in composite materials. And since the density of the pellet form is higher than that of the powder form, transport, transfer and improvement become easier. Therefore, it can be more effectively applied to the manufacturing of composite materials.

The present invention relates to a method for producing large-diameter, low-density carbon nanotubes. The method uses a catalyst containing spherical &#x3b1;-alumina that is capable of controlling the growth of carbon nanotubes without deteriorating the quality of the carbon nanotubes. The use of the catalyst makes the carbon nanotubes highly dispersible.

Carbon nanotubes having larger diameter and lower bulk density and process for preparing same

Provided is a supported catalyst for producing carbon nanotubes with a large specific surface area. The supported catalyst enables the production of carbon nanotubes with a large specific surface area in high yield. Therefore, the catalyst can be used in various fields. Also provided are carbon nanotubes produced using the supported catalyst.

Catalyst for producing carbon nanotubes and carbon nanotubes produced using same

A method and apparatus for recovering a partition based on file system metadata, which calculate core information necessary for the recovery of a partition using only the MFT entry information of $MFT and recover a deleted partition when an MBR and a GPT that correspond to the partition configuration information of a disk and a BR and a BBR that store the configuration information of a volume are deleted or destroyed. The method includes determining an unallocated area in a disk or an evidence image, collecting MFT entries from the unallocated area, generating MFT partition candidate information by analyzing the MFT entries, and creating information enabling a layout of a partition to be reconfigured based on the MFT partition candidate information, and creating a tree structure using the created information and the MFT entries.

Growing community of inventors

Daejeon, South Korea

Seungyong Lee