Korea Kumho Petrochemical Co., Ltd.

Kyoung Ho Row

Jae Woo Kim

Yong Hee Yun

Ji Won Park

Jin Woo Park

Yun Jung Kim

Ick Jin An

Seok Hyun Kang

Chang Kyo Shin

Ji Hyun Heo

Hyung Jae Lee

Chan Hyun Park

Young Rok Lee

Yu Mi Kim

A preparation process of 5-ethylidene-2-norbornene, including: introducing dicyclopentadiene into a dicyclopentadiene decomposition reactor to thermally decompose the dicyclopentadiene; introducing a product of the above step into a cyclopentadiene purification tower; introducing 1,3-butadiene, a solvent, and cyclopentadiene separated from the top of the cyclopentadiene purification tower into a Diels-Alder reactor to react the same; introducing a product of the immediate above step into a 1,3-butadiene removal tower to recover 1,3-butadiene from the top; introducing a mixture at the bottom of the 1,3-butadiene removal tower into a desolvation tower, and recycling a solvent and unreacted raw materials recovered from the top of the desolvation tower to the dicyclopentadiene decomposition reactor; introducing a mixture at the bottom of the desolvation tower into a 5-vinyl-2-norbornene separation tower to separate 5-vinyl-2-norbornene; and introducing the 5-vinyl-2-norbornene into an isomerization reactor to react the same.

Preparation process of 5-ethylidene-2-norbornene

One aspect of the present disclosure provides a system for producing 1,3-butadiene, which includes: a first supply unit, by which a first feed including a butene raw material, oxygen and steam is supplied; a second supply unit, by which a second feed including a butene raw material and oxygen is supplied; and a reaction unit, which includes a catalyst fixed bed and in which an oxidative dehydrogenation reaction takes place, wherein the first supply unit is connected to a front end of the reaction unit, and the second supply unit is connected to an intermediate end of the reaction unit.

System for producing 1,3-butadiene and method of producing 1,3-butadiene using the system

According to an embodiment of the present invention, there are provided a catalytic body, a method of manufacturing the same, and a method of preparing 1,3-butadiene using the same. The catalytic body includes an inactive support; an intermediate layer disposed on a surface of the inactive support; and an active layer disposed on a surface of the intermediate layer, wherein the active layer includes catalyst powder and a binder.

Catalytic body coated with metal oxide, method of manufacturing the same, and method of preparing 1,3-butadiene using the same

A metal oxide catalyst involved in a hydrogenation reaction in which a ketone is converted into an alcohol, a method of preparing the metal oxide catalyst, and a method of preparing an alcohol using the same are provided. The metal oxide catalyst has a spinel structure represented by the following Formula 1:XAlO,&#x2003;&#x2003;&#x3c;Formula 1&#x3e;

Metal oxide catalyst, method of preparing the catalyst, and method of alcohol using the same

One aspect of the present invention provides a method for preparing a ferrite metal oxide catalyst, comprising (a) preparing a precursor solution by dissolving a magnesium nitrate precursor and an iron nitrate precursor in a polar solvent, (b) forming a catalyst powder by spray-pyrolyzing the precursor solution into a reactor using a carrier gas, and (c) calcinating the catalyst powder in a reservoir after conveying the catalyst powder to the reservoir. The method may increase the activity and stability of a catalyst powder by additionally performing a step of calcinating the catalyst powder at a certain temperature for a certain period of time, and may increase the purity of the catalyst by reducing moisture and nitrate remaining in the catalyst. Also, when using the catalyst in an oxidative dehydrogenation of n-butene, the selectivity and purity of 1,3-butadiene may increase.

Method for preparing ferrite metal oxide catalyst

A method for preparing a phenolic oligomer antioxidant with a very small residual content of butylated hydroxytoluene (BHT) is provided. Specifically, the method for preparing the phenolic oligomer antioxidant relates to a method which is capable of a BHT-free phenolic oligomer antioxidant or a phenolic oligomer antioxidant containing a trace amount of residual BHT by removing the precursor of BHT as much as possible by performing the concentration under the reduced pressure while injecting an inert gas to an intermediate product and/or removing BHT by performing the concentration under the reduced pressure while injecting an inert gas to the final product.

Preparing method of a phenolic oligomer antioxidant

A mixing reactor for heterogeneous fluids includes a first inlet part for introducing a first fluid, a first nozzle to eject the first fluid, a fluid chamber having a first space portion and a second space portion having a larger inner diameter than that of the first space portion, a second inlet part for introducing a second fluid, a second nozzle to eject the second fluid, a mixing chamber, and a third nozzle part to eject the second fluid. In the mixing reactor for heterogeneous fluids, two or more fluids are effectively collided with each other to enhance mixing uniformity, reduce side reactions, and thus improve reaction yield and reaction rate, and allow for simple maintenance and reuse.

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Daejeon, South Korea

Kyoung Ho Row