Korea University Research and Business Foundation

Chonnam National University

Other

Hyundai Motor Company

Kia Corporation

Korea Institute of Science and Technology

Seoul National University

Kwan Young Lee

Jungkyu Choi

Sung-Won Hong

Sung June Cho

Hyun Wook Jung

Soon Hee Park

Yang-Hwan Jeong

Dae Won Lee

Seung Yong Lee

Min Sung Kim

Dong Hoon Jeong

Hyun Wook Kim

Eun-Joo Kim

Jung Ho Hwang

Ho Seong Jang

So Hye Cho

Sang Soo Han

Kwang Min Chun

Eunhee Jang

Jin Seok Park

Do Heui Kim

Young-Hoon Cho

Dalyoung Yoon

Hyo Bin Nam

Ki Bong Lee

Eun Jun Lee

Myung-gi Seo

Haney Park

Eun-Hee Jang

Seung Gwan Lee

Minseong Lee

Hyoseong Woo

Yonghyun Lim

Minyeong Gim

Byoung Jin Chun

Gi Wook Lee

Woong Sup Yoon

Jin Hee Park

Won Gi Ahn

Geun Ho Han

Jae Hong Ryu

Hyeong Sang Lee

Kyo Seung Lee

Bae Hyeock Chun

A catalyst for purifying exhaust gas includes a first catalyst including a first metal oxide on which platinum (Pt) and rhodium (Rh) are supported, and a second catalyst including a second metal oxide on which palladium (Pd) and platinum (Pt) are supported, wherein the first catalyst and the second catalyst are physically mixed.

Catalyst for exhaust gas purification and manufacturing method thereof

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

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 low-temperature de-NOcatalyst using a ceria-alumina complex support, and a method of manufacturing the same. According to the present invention, provided is a low-temperature de-NOcatalyst using a ceria-alumina complex support, manufactured by impregnating noble metal and metal oxides into a ceria-alumina complex support synthesized by treating a ceria precursor and an alumina precursor in a predetermined mass ratio by a co-precipitation method.

Low-temperature de-NOcatalyst using ceria-alumina complex support and manufacturing method thereof

A supported metal catalyst and a method of forming the same is provided. The supported metal catalyst according to embodiments of the present invention is formed by a method comprising supporting a metal on a support and treating the support supporting the metal with an acid. The method of forming a supported metal catalyst according to embodiments of the present invention comprises supporting a metal on a support and treating the support supporting the metal with an acid.

Supported metal catalyst and method of forming the same

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

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 post-treating a zeolite membrane, comprising treating a defective zeolite membrane with a chemical material such as a dye molecule, which has a size larger than that of the pores of the zeolite membranes and smaller than defects in the membrane, thereby healing the defects in the membrane. The post-treatment method performs post-treatment of the zeolite membrane under mild conditions (room temperature and normal pressure), thereby selectively healing the defects in the zeolite membrane and improving the performance of the zeolite membrane. In addition, the method may provide a high-performance membrane having a high separation factor, particularly under dry conditions.

Method of post-treating zeolite membranes by using dye molecules

Disclosed are a method of preparing a zeolite nanosheet and a zeolite nanosheet particle prepared thereby, and more particularly a method of preparing a zeolite nanosheet capable of preparing a monolayer zeolite nanosheet through a simple process of mixing a multilayer zeolite precursor with a swelling agent to swell the multilayer zeolite precursor and drying and calcining the multilayer zeolite precursor, wherein the monolayer zeolite nanosheet is useful to separate a catalyst or gas, and a zeolite nanosheet particle prepared thereby.

Method of preparing zeolite nanosheet via simple calcination process and zeolite nanosheet particle prepared thereby

Provided is a method for producing zeolite having a controlled aluminum content, wherein the sodium hydroxide molar concentration of a zeolite synthesis mixture can be adjusted to adjust the aluminum content in synthesized CHA. The structure of the low aluminum-content CHA produced by the provided method does not collapse even after high-temperature hydrothermal treatment, and thus the catalytic activity of the CHA can be maintained. Moreover, by adjusting the aluminum content in the framework, the properties of the produced CHA significantly change, and thus the CHA can be applied to various fields.

Method for producing zeolite having controlled aluminum content by adjusting composition of synthesis mixture

Disclosed are method for synthesizing zeolites by using structure directing agent having benzyl groups and zeolites synthesized therefrom. A zeolite having various effects can be produced by using a material including a structure directing agent containing various benzyl groups, and raw material with various SiO/AlOmolar ratios as alumina and silica source.

Method for synthesizing zeolite using structure directing agent containing benzyl group and zeolite synthesized therefrom

The present invention relates to a method of preparing a perm-selective porous membrane and a method of separating gases using the prepared porous membrane. According to the present invention, a membrane is synthesized using a hierarchically structured alumina porous support by a counter diffusion method. During this synthesis, the diffusion rate of metal ions loaded on the porous support is controlled by controlling the pore size of the porous support, and the position at which the membrane is synthesized is controlled by synthesizing the membrane inside the support. This can increase the physical stability of the membrane and make the membrane thicker so as to ensure higher H/COseparation factors.

Method of preparing perm-selective porous membrane and method of separating gases using porous membrane prepared thereby

Growing community of inventors

Seoul, South Korea

Kwan Young Lee