Korea University Research and Business Foundation

Lg Electronics Inc.

Hyundai Motor Company

Kia Corporation

Other

Jungkyu Choi

Kwan Young Lee

Kwan-Young Lee

Eunhee Jang

Sung-Won Hong

Joonyup Lee

Seokbok Jang

Jongse Park

Jinseong Kim

Eun-Joo Kim

Juhee Kim

Yang-Hwan Jeong

Hwiyoon Noh

Eun-Hee Jang

Jin Seong Kim

Chang Hwan Kim

Youngwoo Kim

Jin Woo Choung

Jaemin Kim

Michael Tsapatsis

Yongchul Park

Huran Choi

Eunjoo Kim

Hae-Kwon Jeong

Chun Yong Kang

Younghan Lee

Dalyoung Yoon

Kyehwan Lee

Eun Jun Lee

Junho Cho

Jaebok Kim

Haney Park

La Young Choi

Yanghwan Jeong

Sungwon Hong

Layoung Choi

Minseong Lee

Daeyeon Yi

Wanxi Cai

Hyunseob Lee

Yaeun Seo

Disclosed are a hydrocarbon adsorption and desorption complex including zeolite with a controlled cation type and a preparation method therefor. The hydrocarbon adsorption and desorption complex exhibits excellent hydrocarbon adsorption and oxidation performance even at a temperature lower than a catalyst activation temperature by controlling the distribution of metal ions and metal oxides, and also exhibits excellent hydrocarbon adsorption and oxidation performance even in the presence of water, by being prepared through hydrothermal treatment.

Hydrocarbon adsorption and desorption complex comprising zeolite with controlled cation and preparation method therefor

The present invention relates to a separator membrane having a hierarchical structure, a production method therefor and a xylene separation method using same, and to: a separator membrane having a hierarchical structure comprising mesopores, the separator membrane having mesopores introduced inside a microporous zeolite separator membrane, thereby being thin, having less defects and exhibiting high xylene permeation and separation performance; a production method therefor; and a xylene separation method using same.

Separator membrane having hierarchical structure comprising mesopores, production method therefor and xylene separation method using same

Disclosed are a CHA zeolite membrane and a method of preparing the same, and more particularly, a CHA zeolite membrane having high capacity to separate CO/Nand CO/CHeven under wet conditions using a membrane produced using a synthetic precursor having a controlled ratio of Si and Al, a method of preparing the same, and a method of capturing and removing carbon dioxide using the membrane.

CHA zeolite membrane and method of preparing the same

The present invention relates to a method of controlling a defect structure in an MFI zeolite membrane and a method of separating xylene isomers using the MFI zeolite membrane produced by the method, and more particularly, to a method of controlling a defect structure in an MFI zeolite membrane that improves the performance of separating a xylene isomer by reducing the amount and size of defects formed in the MFI membrane structure when removing organic-structure-directing agents in the membrane through calcination at a low temperature using ozone.

Method of controlling structure of defects in MFI zeolite membranes

Disclosed are a hydrocarbon adsorption and desorption complex that reduces emission of hydrocarbon from vehicle exhaust gas and improves hydrothermal stability of a device, and a method for preparing the same. The hydrocarbon adsorption and desorption complex may have improved adsorption ability of the hydrocarbon as metal ions are bound to a gas adsorbing portion containing aluminum, and may have improved hydrothermal stability as a reinforcing portion made of silica is formed on a surface of the gas adsorbing portion.

Hydrocarbon adsorption and desorption complex including gas adsorbing portion and reinforcing portion and method for preparing the same

The present invention relates to a method of controlling a defect structure in a chabazite (CHA) zeolite membrane, the CHA zeolite membrane having a controlled defect structure by the method and a method of separating CO, H, or He and water from a mixture of water and an organic solvent using the CHA zeolite membrane, and more particularly, to a method of controlling a defect structure in a CHA zeolite membrane that improves the separation performance by reducing the amount and size of defects formed in the CHA membrane structure when removing organic-structure-directing agents in the membrane through calcination at a low temperature using ozone.

Method of controlling structure of defects in chabazite zeolite membranes through low temperature heat treatment

Disclosed are a MWW/DDR type gas separation membrane comprising at least one MWW type zeolite and at least one DDR type zeolite and a method for preparing the same. One of the MWW type zeolite and the DDR type zeolite is disposed on the other thereof, wherein at least one of the MWW type zeolite and the DDR type zeolite is epitaxially grown. In the gas separation membrane, the DDR type zeolite is epitaxially grown from the MWW type zeolite, or the MWW type zeolite is epitaxially grown from the DDR type zeolite. Thus, the MWW/DDR type gas separation membrane is synthesized using a structural continuity of the MWW type zeolite and the DDR type zeolite. Thus, the gas separation membrane has excellent separation efficiency.

Gas separation membrane containing heterogeneous zeolites and preparation method thereof

A hydrocarbon adsorbent includes a core-shell particle including a core and a shell surrounding the core, wherein the core includes ion-exchanged zeolite that is ion-exchanged with a metal other than silicon (Si) and aluminum (Al) and the shell includes a mesoporous metal oxide.

Hydrocarbon adsorbent

Disclosed are a hydrocarbon adsorption and desorption complex showing hydrocarbon adsorption and oxidation performance by controlling the cation ratio in zeolite, and a preparation method therefor. The hydrocarbon adsorption and desorption complex controls a cation ratio to exhibit the excellent hydrocarbon adsorption ability and oxidation performance even at a temperature lower than the catalyst activation temperature, and increases hydrothermal stability of the hydrocarbon adsorption and desorption complex through hydrothermal treatment to exhibit the excellent hydrocarbon adsorption and desorption performance even in a situation where water is present at a high temperature.

Hydrocarbon adsorption and desorption complex comprising zeolite with controlled cation ratio and preparation method therefor

Disclosed are a heterogeneous zeolite membrane and a method of preparing the same, and more particularly a heterogeneous zeolite membrane that has CHA and DDR zeolite structures by growing seed particles into a crystal structure different from that of the zeolite membrane and can thus separate CO/Nand CO/CHeven under wet conditions, a method of preparing the same, and a method of capturing and removing carbon dioxide using the membrane.

Method of preparing heterogeneous zeolite membranes

The present disclosure provides a catalyst for reducing CO and HC which is a core-shell particle including a core and a shell surrounding the core, the core includes metal oxide nanoparticles and noble metal nanoparticles fixed to the metal oxide nanoparticles, and the shell includes zirconia (ZrO), and a layer from which the metal oxide is removed between the core and the shell is included.

Catalyst for reducing carbon monoxide and hydrocarbon, and method for preparing the same

Disclosed are a method of preparing carbon-dioxide-selective separation membranes by controlling calcination conditions including rapid thermal processing and separation membranes produced thereby. More particularly, disclosed are a method of preparing carbon-dioxide-selective separation membranes that can improve COpermselectivity, particularly, exhibit excellent COpermselectivity in the presence of water in the feed gas, by controlling the size of defects in the separation membranes using rapid thermal processing, separation membranes produced thereby, and a method of capturing and removing carbon dioxide using the separation membranes.

Method of preparing CO-selective membranes by controlling calcination process including rapid thermal processing and membranes produced thereby

The present invention relates to a method of fabricating an organic structure directing agent-free CHA type zeolite membrane and a membrane fabricated thereby, and more particularly to a method of fabricating a continuous CHA type zeolite membrane, which exhibits CO/Nand CO/CHseparation performances comparable with those of conventional membranes, in a cost-effective manner without a calcination process by hydrothermal synthesis using an alkali metal hydroxide without using an organic structure directing agent, and to a membrane fabricated thereby.

Method of fabricating organic structure directing agent-free CHA type zeolite membrane and membrane fabricated thereby

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Seoul, South Korea

Jungkyu Choi