Lg Chem, Ltd

KyungYeon Kang

SungJin Kim

Jihee Woo

Ji Yeon Kim

Dong Hyun Cho

Jun Seon Choi

Seungyong Son

Seungyong Lee

Dongchul Lee

Jinmyung Cha

Hyeon Sik Choi

Sang Hoon Choy

Dong Hyun Kim

Jong Won Lee

Yelin Kim

Houngsik Yoo

Gyemin Kwon

Jongheon Seol

JaeKeun Yoon

Hyungsik Jang

Jungkeun Yoo

Donghyun Cho

Jindo Kim

There is provided an ammoxidation catalyst for propylene having a structure in which molybdenum (Mo) oxide is supported first, and an oxide of heterogeneous metals including bismuth (Bi) is supported later. Related methods of making and using the catalyst are also provided.

Ammoxidation catalyst for propylene, manufacturing method of the same catalyst, ammoxidation method using the same catalyst

Provided is an ammoxidation catalyst for propylene, a manufacturing method of the same, and an ammoxidation method of propylene using the same. Specifically, according to one embodiment of the invention, there is provided a catalyst having a structure in which metal oxide is supported on a silica carrier, having narrow particle size distribution, and having excellent attrition loss. The catalyst may have a D50 particle diameter of 30 to 300 μm, and D10 particle diameter, D50 particle diameter and D90 particle diameter may satisfy the relationship (D90−D10)/D50<2.0. The catalyst may have a chemical formula MoBiFeCoKO, where a is 0.1 to 5, b is 0.1 to 5, c is 0.01 to 10, d is 0.01 to 2, and x is 24 to 48.

An ammoxidation catalyst includes a metal oxide represented by Chemical Formula 1 supported on a silica carrier, wherein the catalyst has pores having a diameter of 5 to 200 nm, a pore volume of 0.1 to 3.0 cm/g, and a BET surface area of 50 m2/g to 1,000 m2/g:MoBiFeABCO  Chemical Formula 1

An ammoxidation catalyst includes a metal oxide represented by Chemical Formula 1, wherein a first peak having intensity of A appears in the 2θ range of 26.3=0.5°, and a second peak having intensity of B appears in the 2θ range of 28.3±0.5° in X ray diffraction analysis by CuKα, and an intensity ratio (A/B) of the first peak to the second peak is 1.5 or more:MoBiFeABCDO  Chemical Formula 1

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

Provided is a method for preparing a supported catalyst that enables the production of carbon nanotubes having a large specific surface area in high yield. Carbon nanotubes produced using the supported catalyst are also provided. The carbon nanotubes are suitable for use in various applications due to their large specific surface area and high yield.

Carbon nanotube having high specific surface area and method for manufacturing same

The present disclosure relates to a carbon nanotube dispersion liquid comprising bundle-type carbon nanotubes; a dispersion medium; and a polyvinyl butyral resin having a weight average molecular weight of greater than 50,000, a method for preparing the same, methods for preparing electrode slurry and an electrode using the same, and an electrode and a secondary battery prepared using the carbon nanotube dispersion liquid.

Carbon nanotube dispersion and method for producing same

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

The present invention relates to a supported catalyst having a structure in which a metal catalyst is supported on a core-shell structured support. The support includes core particles and shell particles having a smaller particle diameter than the core particles and coated on the core particles to form a shell layer. Due to this structure, the supported catalyst can be used to produce carbon nanostructures that form a novel secondary structure in which ends of the carbon nanostructures are supported on the supported catalyst and form independent branches and the opposite ends grow and are assembled together. The novel structure is expected to find application in various fields, such as energy materials, functional composites, pharmaceuticals, batteries, and semiconductors, because of its characteristic shape.

Supported catalyst, method for preparing same, secondary structure of carbon nanostructure manufactured using same

The present disclosure relates to a carbon nanotube dispersion including carbon nanotubes, a dispersion medium, and partially hydrogenated nitrile rubber having a residual double bond (RDB) value of 0.5% by weight to 40% by weight calculated according to Mathematical Formula 1, a method for preparing the same, and methods for preparing electrode slurry and an electrode using the same.

Carbon nanotube dispersion liquid and manufacturing method thereof

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

The present invention relates to a method for producing a carbon nanotube aggregate whose bulk density is easily controllable. Therefore, the present invention provides a carbon nanotube aggregate suitable for use in various fields.

Method for controlling bulk density of carbon nanotube agglomerate

The present invention relates to a novel secondary structure of carbon nanostructures, a bundle thereof and a composite comprising the same. The secondary structure according to the present invention is characterized that it is formed by a plurality of carbon nanostructures (CNSs) assembled to have a tube form in whole or in part. The novel secondary structure according to the present invention, the bundle thereof and the composite comprising the same are highly applicable in fields of energy materials, functional composites, batteries, semiconductors and the like.

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Daejeon, South Korea

KyungYeon Kang