Korea Research Institute of Chemical Technology

Dong Won Hwang

Young Kyu Hwang

Jong-San Chang

Do Young Hong

U Hwang Lee

Jong San Chang

Kyung Ho Cho

U-Hwang Lee

Pravin Pandharinath Upare

Su Kyung Lee

You-Kyong Seo

Do Sun Hong

Ji Woong Yoon

Ji Sun Lee

Anil Haribhau Valekar

Pravin P Upare

Jaesung Kwak

Jung Ho Lee

Ho Jeong Chae

In Taek Hwang

Do-Young Hong

Jong Y Jeon

Youn-Sang Bae

Sue Kyung Lee

Kyung Ryul Oh

Ma Eum Lee

Joungmo Cho

Seung-joon Lee

Sukyung Lee

Ji Sun Yoon

Joung-mo Cho

Pandharinath Pravin Upare

MaEum Lee

Kyu Eun Shim

HyoJin Gwak

Maeum Lee

Man Jae Gil

A Reum Byeun

Yoo Han Han

You Kyong Seo

The present disclosure relates to a catalyst for preparing 1,2-pentanediol from furfural and/or furfuryl alcohol, and more particularly to a catalyst, which is configured such that a catalytically active metal containing both at least one transition metal and tin (Sn) is supported on a basic support and is capable of increasing reaction selectivity for 1,2-pentanediol, and a method of preparing 1,2-pentanediol using the same.

Catalyst for preparing 1,2-pentanediol and method for preparing 1,2-pentanediol by using same

Proposed is a catalyst complex having high activity for carbon dioxide conversion reaction that converts carbon dioxide to useful compounds through reaction of carbon dioxide and hydrocarbon containing at least one hydroxyl group, and a carbon dioxide conversion process using the same, wherein the catalyst complex includes, as an active metal in the catalyst complex, at least one of noble metals and at least one of transition metals other than noble metals, thereby having high activity for the carbon dioxide conversion reaction.

Heterogeneous catalyst complex for carbon dioxide conversion

The present disclosure provides a preparing method for 5-alkoxymethylfurfural, including steps of (a) preparing fructose, (b) mixing the fructose, an organic acid catalyst, and an organic solvent, thereby preparing mixing solution, and (c) heating the mixing solution, thereby preparing 5-alkoxymethylfurfural. Therefore, 5-alkoxymethylfurfural may be effectively prepared without by-products from fructose.

Preparing method for 5-alkoxymethylfurfural

The present invention relates to an olefin metathesis reaction catalyst where rhenium (Re) oxide or molybdenum (Mo) oxide is supported, as a catalyst main component, on a surface-modified mesoporous silica or mesoporous alumina support, and a preparation method therefor. The olefin metathesis reaction catalyst of the present invention allows highly efficient metathesis of long-chain unsaturated hydrocarbons having at least eight carbons at a low temperature of 150&#xb0; C. or lower. The catalyst can be separated readily from reaction solution, regenerated at a low temperature of 400&#xb0; C. or lower by removing toxins accumulated on it during the metathesis reaction, and used repeatedly in metathesis reaction many times, thereby being made good use in commercial olefin metathesis processes.

Olefin metathesis reaction catalyst and preparation method therefor

Provided is a secondary battery having a battery case which accommodates an electrode assembly including a cathode, a anode, and a separator disposed between the cathode and the anode, together with an electrolyte, wherein one or more selected from the group consisting of the cathode, the anode, the separator, the electrolyte, and the interior of the battery case include, as a water adsorbent, a first organic-inorganic hybrid nanoporous material which may be regenerated by desorbing 70% or more of a total adsorption amount of adsorbed water at 150&#xb0; C. or lower; and optionally, a second organic-inorganic hybrid nanoporous material, of which water adsorption capacity is higher than water desorption capacity at a relative humidity p/p0 of 0.3 or less (herein, p0 represents a saturated vapor pressure at an application temperature and p represents a vapor pressure upon adsorption).

Secondary battery including organic-inorganic hybrid nanoporous material as water adsorbent

Methods for the oligomerization of ethylene, and more specifically, methods for the preparation of mainly ethylene oligomers of Cor higher are described. A method can include performing a first oligomerization of an ethylene gas using a Ni-containing mesoporous catalyst, followed by a second oligomerization using an ion exchange resin, etc. to produce ethylene oligomers of Cor higher. The method for the preparation of ethylene oligomers can produce Cethylene oligomers in high yield without inducing deactivation of the catalyst, compared to the conventional technology of ethylene oligomerization by a one-step process.

Method for oligomerization of ethylene

The present invention relates to a method and apparatus for preparation of lactide using a lactide purification process, comprising introducing an aqueous solution comprising lactic acid into a reactor filled with a catalyst and reacting the same to produce crude lactide vapor; and purifying the crude lactide vapor to produce lactide crystals, wherein a first purification comprises collecting and crystallizing the crude lactide vapor using a first solvent to produce lactide crystals, and separating the lactide crystal from a residue through filtration.

Method and apparatus for preparation of lactide using lactide purification process

The present invention relates to a method for preparing fructose or xylulose from biomass comprising glucose or xylose, and a method for separating a mixture of glucose and fructose and a mixture of xylose and xylulose.

Method for preparing fructose or xylulose from biomass containing glucose or xylose using butanol, and method for separating the same

The present invention relates to a catalyst for transfer hydrogenation, which is formed of a metal-organic framework having an MOF-808 based X-ray diffraction pattern. A high crystalline porous MOF-808 based metal-organic framework exhibits excellent performance in the transfer hydrogenation of ethyl levulinate (EL) at high and low temperature.

Zirconium-based metal-organic frameworks as catalyst for transfer hydrogenation

The present invention relates to a method for preparing mannitol which includes performing the hydrogenation of fructose in the presence of a Cu-based nanocomposite catalyst, for example, a nanocomposite catalyst of CuO(x)/SiO2(100-x) (wherein x is a real number from 20 to 90), using butanol as a solvent.

Method for preparation of mannitol from fructose using butanol as solvent

The present invention relates to a method for preparing for a furan derivative from biomass, comprising step (1) of preparing 5-hydroxymethylfurfural by reacting biomass and a solid acid catalyst in butanol; and step (2) of preparing a furan derivative by reacting the butanol solution of 5-hydroxymethylfurfural, obtained in step (1), with a hydrogenation catalyst.

Method for preparing furan derivatives from biomass

The present invention relates to a nitrogen adsorbent having nitrogen selective adsorptivity by including an organic-inorganic hybrid nanoporous material having a coordinatively unsaturated metal site with density of 0.2 mmol/g to 10 mmol/g in a skeleton, surface or pore; and use thereof, such as a device separating nitrogen from a gas mixture containing nitrogen and methane, a pressure swing adsorption separation device and a temperature swing adsorption separation device for separating nitrogen provided, a method for separating nitrogen and methane from a gas mixture containing nitrogen and methane, a device for separating nitrogen, oxygen or argon, a method for separating nitrogen, oxygen or argon from a gas mixture containing nitrogen, oxygen or argon, and a method for preparing nitrogen or high purity inert gas all separated from a gas mixture containing nitrogen and inert gas.

Inorganic-organic hybrid nanoporous material with nitrogen selective adsorptivity and method for separating nitrogen-containing gas mixture using the same

The present invention provides a method for directly producing lactide by subjecting lactic acid to a dehydration reaction in the presence of a catalyst comprising a tin compound, preferably, a tin (IV) compound, wherein lactide can be produced directly or by one step from lactic acid, without going through the step of producing or separating lactic acid oligomer. The method of the present invention has advantages of causing no loss of lactic acid, having a high conversion ratio to lactic acid and a high selectivity to optically pure lactide, and maintaining a long life time of the catalyst. Further, since lactic acid oligomer is not or hardly generated and the selectivity of meso-lactide is low, the method also has an advantage that the cost for removing or purifying this can be saved.

Method for producing lactide directly from lactic acid and a catalyst used therein

The present invention relates to a complex and a method for manufacturing same, the complex comprising: at least one crystalline hybrid nanoporous material powder, in which a metal ion, or a metal ion cluster to which oxygen is bound, and an organic ligand, or the organic ligand and a negative ion ligand are in a coordinate covalent bond; and at least one organic polymer additive, or at least one organic polymer additive and an inorganic additive, wherein the shape of the complex is spherical or pseudo-spherical, the size of the complex is 0.1 to 100 mm, a total volume of pores is 5 or more volume % based on the sum of a total volume of nanoporous material having a size of at most 10 nm and a total volume of pores having a size of at least 0.1 &#x3bc;m, and wherein a non-surface value per weight (m/g) of the complex as at least 83% of a non-surface value per weight (m/g) of the nanoporous material powder.

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Daejeon, South Korea

Dong Won Hwang