Lg Chem, Ltd

Lg Chemical Ltd.

Dong-Hyun Ko

Jae-Hui Choi

Sung-Shik Eom

Moo-Ho Hong

Dae-Chul Kim

O-Hak Kwon

Yong-Jin Choe

Won-Ho Lee

Sang-Gi Lee

Young-Chang Byun

Kyung-Hwa Kang

O-Hark Kwon

Chan-Hong Lee

Moo Ho Hong

Sang-Oeb Na

Sung Shik Eom

Dae Chul Kim

O Hak Kwon

Kwang-Ho Park

Hye-Won Yang

Ji-Joong Moon

Dae-Heung Choi

Hyun-Seok Nam

Kyong-Yong Cha

JAE-Hui Choi

You-Moon Jeon

Bog-Ki Hong

Sang-Gi 105-1203 Samsung Pureun Apt Lee

Sung-Shik 107-807 Expo Apt Jeonmin-Dong Eom

Disclosed is a method for regenerating a hydrogenation catalyst. More specifically, disclosed is a method for regenerating a hydrogenation catalyst poisoned during hydrogenation of a hydroformylation product for preparation of alcohol by stopping hydrogenation in a hydrogenation stationary phase reactor in which the hydrogenation catalyst is set and flowing hydrogen gas under a high temperature normal pressure. The method has an effect in that the poisoned hydrogenation catalyst can be efficiently recovered through a simple process.

Method for regenerating hydrogenation catalyst

Disclosed is a method for producing 1,3-butadiene through oxidative dehydrogenation of normal-butene using a parallel reactor in which catalysts are charged into fixed bed reactors and are not physically mixed. More specifically, disclosed is a method for efficiently producing 1,3-butadiene through oxidative dehydrogenation of normal-butene using the parallel reactor containing multi-component bismuth molybdate-based catalysts exhibiting different activities to oxidative dehydrogenation for normal-butene isomers (1-butene, trans-2-butene and cis-2-butene), and butene separated from a C4 mixture containing normal-butene and normal-butane, as a reactant.

Method for preparing 1,3-butadiene as high yield

The present invention relates to an apparatus for producing alcohols from olefins, comprising: a hydroformylation reactor wherein aldehydes are produced from olefins; a catalyst/aldehydes separator; a hydrogenation reactor wherein the aldehydes are hydrogenated to produce alcohols; and a distillation column. The hydroformylation reactor is equipped with a distributor plate, which has a broad contact surface for providing sufficient reaction area for reactants such as olefins and synthesis gas, and allows the reaction mixture to circulate and mix sufficiently, which contribute to excellent efficiency in terms of production of aldehydes. In addition, the hydrogenation reactor suppresses sub-reactions to improve the production yield of alcohols.

Apparatus for producing alcohols from olefins

The present invention relates to an apparatus for coproducting iso-type reaction product and alcohol from olefin, and a method for coproducting using the apparatus, in which the hydroformylation reactor provides a sufficient reaction area due to the broad contact surface area between the olefin and the synthesis gases that are the raw materials by a distributor plate installed in the reactor, and the raw materials can be sufficiently mixed with the reaction mixture due to the circulation of the reaction mixture so that the efficiency of the production of the aldehyde is excellent; and also the hydrogenation reactor suppresses the side reaction so that the efficiency for producing aldehyde and alcohol are all increased, and also iso-type reaction product and alcohol can be efficiently co-produced.

Apparatus for coproducting ISO type reaction products and alcohols from olefins, and method for coproducting them using the apparatus

The present invention relates to a catalyst composition for hydroformylation reaction and a hydroformylation process using the same. In the hydroformylation process using the catalyst composition according to the present invention, increased catalytic stability and high catalytic activity can be obtained, and the selectivity of iso-aldehyde produced can be desirably controlled.

Catalyst composition for hydroformylation reaction and hydroformylation process using the same

Disclosed is a hydroformylation method having improved catalyst stability in a reaction. Advantageously, provided is a hydroformylation method in which a specific &#x3b1;,&#x3b2;-unsaturated carbonyl compound is incorporated during a hydroformylation reaction to prevent alkyl phosphite decomposed from a phosphite ligand from acting as a catalyst poison, thereby improving a yield of reaction and inhibiting decomposition of ligand and catalyst.

Hydroformylation method having improved catalyst stability in reaction

Apparatus for coproducting iso type reaction products and alcohols from olefins, and method for coproducting them using the apparatus

The present invention relates to a catalyst composition that includes a triphenylphosphine ligand, a monodentate phosphine ligand, a monodentate phosphine oxide ligand, and a transition metal catalyst, and a hydroformylation process using the same. In the hydroformylation process using the catalyst composition according to the present invention, the high catalytic activity can be obtained, and the selectivity (N/I selectivity) in respects to normal- or iso-aldehyde can be desirably controlled.

Phosphorus-containing catalyst composition and hydroformylation process using the same

The present invention relates to a catalyst composition that includes a bis-phosphite ligand, a poly-phosphite ligand or a mono-phosphite ligand, and a transition metal catalyst, and a hydroformylation reaction using the same. The catalyst composition has the excellent catalytic activity, and the normal/iso (N/I) selectivity of aldehyde generated by the hydroformylation reaction using the same is increased.

Catalyst composition including phosphite ligands and hydroformylation method using the same

The present invention relates to a method for preparing aldehydes by reacting olefins with a synthesis gas including carbon monoxide and hydrogen, and to an apparatus therefore. More particularly, the present invention relates to a method for preparing aldehydes, characterized by spraying and supplying olefins, synthesis gas including carbon monoxide and hydrogen, and a catalyst composition into an oxo reactor through a nozzle, and to an apparatus therefore. According to the present invention, the hydroformylation efficiency can be improved, thereby obtaining desirable aldehydes with a high yield.

Method for the hydroformylation of olefins and apparatus using the same

A method of coating a catalyst to a support for use in acrolein oxidation reaction. Metallic salt components of the catalyst including molybdate, vanadate and tungstate are dissolved in a liquid to form a suspension of particles of the catalyst. The precipitation of the catalyst particles is controlled by homogenizing the catalyst particles suspended in the liquid. The phase separation between the catalyst particles and the liquid can be substantially slowed down by the homogenization. Then the catalyst is coated on an inert support by applying the suspension of the catalyst particles to the support. In the suspension, the total weight of water is about 0.8 to about 5 times of the total weight of the metallic salts in the catalyst. This method of preparing suspension minimizes the amount of the liquid required to dissolve the metallic salts, which reduces the amount of time and energy to be used in evaporating the liquid from the suspension. Additionally, in obtaining catalyst from the suspension prepared by this method, it is possible to avoid the deterioration of the catalytic performance since less heat is required to evaporate the water.

Method of coating a catalyst to a support for use in acrolein oxidation

A method of producing acrylic acid using a catalyst for acrolein oxidation reaction. Metallic salt components of the catalyst including molybdate, vanadate and tungstate are dissolved in water. An additional metallic salt component of the catalyst is added to the aqueous solution of the salts to form a suspension of the catalyst. In the suspension, the total weight of water is about 0.8 to about 5 times of the total weight of the metallic salts in the catalyst. This method of preparing suspension minimizes the amount of water required to dissolve the metallic salts, which reduces the amount of time and energy to be used in evaporating water from the suspension in the following step of obtaining catalyst. Additionally, in obtaining catalyst from the suspension prepared by this method, it is possible to avoid the deterioration of the catalytic performance since less heat is required to evaporate the water. Disclosed also is a method of producing a carrier-retained catalyst. Catalyst particles suspended in the water are split or ground into smaller particles to maintain homogeneous suspension. The suspension is sprayed to an inert carrier while applying heated air flow to remove water and obtain a carrier-retained catalyst.

Method of producing acrylic acid using a catalyst for acrolein oxidation

Disclosed is a method of producing a carrier catalyst for a use in acrolein oxidation reaction. Metallic salt components of the catalyst including molybdate, vanadate and tungstate are dissolved in water. An additional metallic salt component of the catalyst is added to the aqueous solution of the salts to form a suspension of the catalyst. In the suspension, the total weight of water is about 0.8 to about 5 times of the total weight of the metallic salts in the catalyst. This method of preparing suspension minimizes the amount of water required to dissolve the metallic salts, which reduces the amount of time and energy to be used in evaporating water from the suspension in the following step of obtaining catalyst. Additionally, in obtaining catalyst from the suspension prepared by this method, it is possible to avoid the deterioration of the catalytic performance since less heat is required to evaporate the water. Disclosed also is a method of producing a carrier-retained catalyst. Catalyst particles suspended in the water are split or ground into smaller particles to maintain homogeneous suspension. The suspension is sprayed to an inert carrier while applying heated air flow to remove water and obtain a carrier-retained catalyst.

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Daejeon, South Korea

Dong-Hyun Ko