Korea Research Institute of Chemical Technology

Korea Research Institute of Bioscience and Biotechnology

Korea Research Institute of Standards and Science

Jeong Hoon Kim

Bong Jun Chang

Su Young Moon

Chae Young Park

Bo Ryoung Park

In Jun Park

Jong-Wook Ha

Byoung Chul Park

Soo-Bok Lee

Dong-Kwon Kim

Jeong Hee Moon

Sang-Yun Lee

Kwang-Won Lee

Kwang-Han Kim

Mihye Yi

Yong-Hyeon Yim

Youn-Sang Bae

Simon MoonGeun Jung

Chang In Kong

Bong-Jun Chang

Hyoung Jun Lee

Sang-Man Ahn

Seung-Hak Choi

Sung Goo Park

Ji-Seon Oh

Hee Moon Park

Eun-Hee Kim

Yang No Yun

Tea-Hoon Kim

Sung Woo Heo

Hoon Moh Seong

Ho Cheol Kang

The present invention relates to a system and method for separating and recovering hydrogen from coke oven gas (COG) in steel industry, particularly a system and method for separating and recovering hydrogen at a concentration of 99.9% by volume or more from coke oven gas (COG) in steel industry with a recovery rate of 95% or more.

Separation and recovery system and method of hydrogen from coke oven gas(COG) in steel industry

The present invention relates to a BCDA-based semi-alicyclic homo- or co-polyimide membrane material for gas separation and a preparation method thereof. The polyimide material prepared according to the present invention has high solubility in casting solvents, particularly in polar organic solvents, by interrupting asymmetry in the polyimide chain structure and formation of polyimide complexes compared with aromatic polyimides, and has higher heat resistance than the conventional aromatic polyimides and aliphatic polyimides, so that it is useful for the process of a high-selective permeable composite membrane or a asymmetric hollow fiber membrane used for commercial purposes, suggesting that it can be effectively used as a membrane for gas separation in various fields. In addition, the polyimide material membrane for gas separation of the present invention is useful because it has superior gas separation properties to the conventional commercialized aromatic polyimides or semi-alicyclic polyimides.

BCDA-based semi-alicyclic homo- or co-polyimide membrane materials for gas separation and the preparation method thereof

Provided are a methane-selective composite membrane comprising: a UiO-66 type organic-inorganic composite nanoporous material, a MIL-100 type organic-inorganic composite nanoporous material, or a ZIF-8 type organic-inorganic composite nanoporous material to which a methane-selective functional group is introduced for selectively separating methane from a gas mixture containing methane/nitrogen, a use thereof, and a method of preparing the same.

Methane-selective mixed matrix membranes including nanoporous metal-organic framework materials to which a methane-selective functional group is introduced, the use thereof, and a method of preparing the same

A mass spectrometry device includes a sample seating part including an ultrasonic vibrator having a through hole through which liquid particles formed by the ultrasonic vibrator from an adsorbent material including a sample and a solvent are discharged, the adsorbent material being seated on the ultrasonic vibrator; a reaction part in which plasma or an ionization medium generated by plasma come into contact with the liquid particles discharged from the through hole to form an ionized material; an introduction part discharging and introducing the ionized material to a detection part; and the detection part analyzing the ionized material discharged from the introduction part. The mass spectrometry device and the mass spectrometry method can detect the components of various samples by converting a sample into liquid particles using ultrasonic waves and applying plasma and can detect samples in various fields without regard to locations.

Ionization mass spectrometry method and mass spectrometry device using same

The present invention provides a anion-exchange composite membrane comprising a copolymer containing a vinylbenzyl trialkylammonium salt repeating unit, a styrene repeating unit and a divinylbenzene derived repeating unit; an olefin additive; a plasticizer; and a polyvinyl halide polymer. The anion-exchange composite membrane comprising a copolymer containing a vinylbenzyl trialkylammonium salt repeating unit, a styrene repeating unit and a divinylbenzene derived repeating unit; an olefin additive; a plasticizer; and polyvinylidene fluoride of the present invention not only displays low electrical resistance, excellent ion exchange capability, excellent ionic conductivity, excellent mechanical properties, excellent chemical properties, and processability, but also is easy to regulate its ion exchange capacity and ionic conductivity. Also, the composite membrane of the invention is easier to produce and cheaper to manufacture than the conventional anion-exchange composite membrane.

Homogeneous anion-exchange composite membrane having excellent chemical resistance and method for producing the same

The present invention provides a cation-exchange composite membrane comprising a copolymer containing a styrene repeating unit introduced with a sulfonation group, a tert-butylstyrene repeating unit and a crosslink repeating unit, an olefin additive, a plasticizer and a polyvinyl halide polymer. The cation-exchange composite membrane comprising a copolymer containing a styrene repeating unit introduced with a sulfonation group, a tert-butylstyrene repeating unit and a crosslink repeating unit, an olefin additive, a plasticizer and a polyvinyl halide polymer of the present invention not only displays low electrical resistance, excellent ion exchange capability, excellent ionic conductivity, excellent mechanical properties, excellent chemical properties, and processability, but also is easy to regulate its ion exchange ability and ionic conductivity. Also, the composite membrane of the invention is easier to produce and cheaper to manufacture than the conventional cation-exchange composite membrane.

Homogeneous cation-exchange composite membrane having excellent chemical resistance and method for producing the same

A separation membrane for olefin separation and olefin separation method using the same are provided.

Separation membrane for olefin separation and olefin separation method using the same

The present invention provides a method for separating high purity methane gas from biogas, which comprises the steps of: compressing and cooling biogas (step 1); and separating carbon dioxide by introducing the biogas compressed and cooled in step 1 into a four-stage polymer separation membrane system in which the residue stream of the first polymer separation membrane is connected to the second polymer separation membrane, the residue stream of the second polymer separation membrane is connected to the third polymer separation membrane, and the permeate stream of the second polymer separation membrane is connected to the fourth polymer separation membrane (step 2).

Multistage membrane separation and purification process and apparatus for separating high purity methane gas

The present invention relates to a polyimide-based macromolecular compound which is produced by using DOCDA and one or more diamines selected from the group consisting of MDA, ODA, PDA, TDA, TrMPD, TeMPD and MBCA; and a gas-separation asymmetrical hollow-fiber membrane comprising the same. The polyimide-based macromolecular compound according to the present invention can advantageously be used in the production of a gas-separation hollow-fiber membrane having an asymmetrical structure since the said compound is highly viscous due to a high molecular weight in addition to having outstanding gas permeability and high selectivity while having excellent high heat resistance, chemical resistance, and mechanical properties and being outstandingly soluble in polar organic solvents.

Polyimide-based macromolecular compound and gas-separation asymmetrical hollow-fibre membrane comprising the same

A novel polyvinyl alcohol-based polymer membrane is disclosed. The novel polyvinyl alcohol-based polymer membrane of the present invention comprises two different compounds which are crosslinked by irradiating light such as UV or electronic beams or heat treatment to form a covalent bond between double bonds thereby providing improved properties such as chemical resistance and durability. This invention also relates to a process its preparation.

Crosslinked polyvinyl alcohol-based polymer membrane and a process of its preparation

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Daejeon, South Korea

Jeong Hoon Kim