Korea Institute of Science and Technology

Korea University Industrial Academic Collaboration Foundation

Ung Lee

Hyun Joo Lee

He Won Lee

Woong Hee Lee

Hong Gon Kim

Dong Ki Lee

Byoung Koun Min

Yun Jeong Hwang

Tae Hoon Kim

Dong Jin Suh

Young Hyun Yoon

Jae Wook Choi

Jeong-Myeong Ha

Nak Ju Doh

Hyung Suk Oh

Gi Seok Yang

Kyeong Su Kim

Hyung-Suk Oh

Tran Huyen Dang

Kyung In Kang

Shinhye Cho

Jai Hyun Koh

Dahye Won

Hyemin Yang

Jeong Eom Lee

Ye Seul Jeong

Seok Hyeon Cheong

Tae Koo Kang

Sung Hoon An

Gwi Tae Park

Seoung Kyou Lee

Da Hye Won

Jae Hyung Im

Disclosed is a methanol and sulfuric acid co-production system capable of producing methanol and sulfuric acid in equal equivalents. Specifically, the system includes an oxidation reaction unit configured to produce methyl bisulfate (CHOSOH) by reacting methane gas with an acid solution in the presence of a catalyst, a reactive distillation unit disposed downstream of the oxidation reaction unit and configured to esterify methyl bisulfate (CHOSOH) supplied from the oxidation reaction unit with trifluoroacetic acid (CFCOOH) to obtain a product and to separate the product into methyl trifluoroacetate (CFCOOCH) and sulfuric acid (HSO) through thermal distillation, and a hydrolysis reaction unit disposed downstream of the reactive distillation unit and configured to produce methanol by hydrolyzing methyl trifluoroacetate (CFCOOCH) supplied from the reactive distillation unit, in which the reactive distillation unit recirculates the sulfuric acid resulting from separation to the oxidation reaction unit.

Methanol and sulfuric acid co-production system

Provided are a basic electrocatalyst applied to a carbon dioxide reduction and ethylene production system, a basic electrocatalyst electrode and an apparatus each including the same, and a method of manufacturing the basic electrocatalyst electrode. The basic electrocatalyst electrode for for carbon dioxide reduction and ethylene production includes: catalyst particles each including copper hydroxide (Cu(OH)); and a basic compound. Since the basic electrocatalyst electrode has high carbon dioxide reduction performance and high ethylene selectivity, the basic electrocatalyst electrode may be applied to a reduction electrode of a carbon dioxide reduction and ethylene production apparatus and may exhibit high current density and high ethylene selectivity. The basic electrocatalyst electrode may be manufactured by a simple method, and may be applied to a large-area electrode.

Basic electrocatalyst for carbon dioxide reduction and ethylene production, electrode and apparatus each including the same, and method of manufacturing the electrode

Proposed is an iridium alloy catalyst having reversible catalytic activity for an oxygen evolution reaction (OER), a hydrogen evolution reaction (HER), and a hydrogen oxidation reaction (HOR) by including an iridium alloy including iridium (Ir) and nickel (Ni). The iridium alloy catalyst according to the present disclosure is rapidly converted to an iridium alloy catalyst in an oxide form and an iridium alloy catalyst in a metallic form according to applied voltage by controlling its crystallinity. Thus, even in case an oxide layer is formed after the OER, the oxidation layer disappears during the HER and HOR and the properties of an iridium metal catalyst remain, thereby maintaining HER/HOR performance.

Iridium alloy catalyst having reversible catalytic activity and preparation method thereof

A method for producing a methanol precursor, methyl trifluoroacetate, having high-purity includes the steps of (a) preparing methyl bisulfate by mixing a catalyst with an acid solution comprising a sulfur-containing acid to provide a first mixture and supplying methane gas to the first mixture to prepare the methyl bisulfate; and (b) preparing methyl trifluoroacetate (CFCOCH) by adding trifluoroacetic acid (CFCOH) to the first mixture including the methyl bisulfate to provide a second mixture and distilling the second mixture under heating to prepare, separate and purify the methyl trifluoroacetate (CFCOCH). Methanol may be produced by adding water to the methyl trifluoroacetate (CFCOCH). A methyl ester represented by Formula 2 below may be produced by adding a carboxylic acid represented by Formula 1 below to the methyl trifluoroacetate (CFCOCH):RCOH&#x2003;&#x2003;(1),

Methods for producing a methanol precursor, methanol, and a methyl ester from methane in high purities

A sulfur dioxide absorbent that is an ionic liquid including a solvent; and a salt of a diamine compound that is substituted with a hydroxyl group and has a chemical formula 1 to 3 below dissolved in the solvent: 

Sulfur dioxide absorbent is an ionic liquid including a salt of a diamine compound that is substituted with a hydroxyl group

Disclosed herein are a method of acid saccharification of biomass and a method of polymerization of furan compounds. The method of acid saccharification of biomass comprises recovering pentose-derived furan compounds produced during the acid saccharification process of biomass. The method of acid saccharification of biomass comprises introducing furan compounds into the acid saccharification process of biomass, to produce and recover furan polymers.

Method of acid saccharification of biomass

A self movable boom system is provided. The self movable boom system include: a boom disposed on a plane perpendicular to a building clamp structure; and a moving unit apparatus including a circumferential moving unit which is disposed between the boom and the building clamp structure to move the boom on a plane perpendicular to the building clamp structure, a lifting-up unit of which one end is disposed toward the circumferential moving unit and of which other end is disposed toward the building clamp structure to move the boom along a longitudinal direction of the building clamp structure, and a boom moving unit which moves an object along the longitudinal direction of the building clamp structure and along a longitudinal direction of the boom.

Self movable crane system with a boom

Growing community of inventors

Seoul, South Korea

Ung Lee