Lg Chem, Ltd

Min Ji Choi

Dong Hyun Ko

Mi Young Kim

Tae Yun Kim

Sung Shik Eom

Da Won Jung

Sungshik Eom

Dawon Jung

Taewoo Kim

Tae Youn Kim

Jung Uk Choi

A hydroformylation catalyst having excellent catalytic activity and stability, a composition including the hydroformylation catalyst, and a method of preparing an aldehyde using the hydroformylation catalyst, wherein, when hydroformylation of an olefin compound is performed in the presence of the hydroformylation catalyst to prepare an aldehyde, the normal/iso (n/i) ratio of the prepared aldehyde is lowered, and synthesis gas yield is increased.

Composition including hydroformylation catalyst

The present invention relates to a catalyst composition for hydroformylation and a method of preparing an aldehyde using the same. More specifically, the present invention provides a catalyst composition for hydroformylation including a specific phosphite-based ligand and a transition metal compound in a specific amount range, thereby being capable of greatly lowering a use amount of an expensive transition metal compound and exhibiting excellent catalyst activity or stability. In addition, by using the catalyst composition in hydroformylation, excellent reaction efficiency may be provided and iso-aldehyde may be generated in high yield.

Catalyst composition for hydroformylation and method of preparing aldehyde using the same

A method for preparing dimethylolbutanal including performing an aldol reaction of n-butyraldehyde (n-BAL) and paraformaldehyde (PFA) in the presence of water and an alkylamine catalyst, in which a weight ratio of the paraformaldehyde:water is 1:0.35 to 1:0.85.

Method for manufacturing dimethylolbutanal and method for manufacturing trimethylolpropane using same

A method for preparing trimethylolpropane, the method including: subjecting dimethylolbutanal (DMB) to a hydrogenation reaction in the presence of a metal catalyst and an alcohol solvent. During the hydrogenation reaction, a weight ratio of the alcohol solvent based to dimethylolbutanal is 2 to 10.

Method for preparing trimethylolpropane

Hydroformylation catalyst, composition including hydroformylation catalyst, and method of preparing aldehyde using hydroformylation catalyst

A method for producing dimethylolbutanal, the method including: (A) distilling a raw material comprising dimethylolbutanal (DMB) in a distillation column; (B) separating the distilled raw material in the distillation column into a low boiling point component, dimethylolbutanal, and a high boiling point component; and (C) refluxing a portion or all of the high boiling point component to the distillation column by heating the portion or all of the high boiling point component, in which the dimethylolbutanal is separated from a side cut of the distillation column.

Method for producing dimethylolbutanal and distillation apparatus for producing same

The present invention relates to a catalyst composition for hydroformylation and a hydroformylation method using the same, and more particularly to a catalyst composition for hydroformylation including a phosphoramidite ligand and a transition metal catalyst, and a hydroformylation method using the catalyst composition. In accordance with the present invention, provided are a catalyst composition for hydroformylation which increases productivity and provides superior catalytic activity and stability while lowering an n/i ratio in generated aldehyde upon hydroformylation of an olefinic compound, and a method of hydroformylating an olefinic compound using the catalyst composition. [Representative Figure] FIG.

Catalyst composition for hydroformylation and hydroformylation method using the same

The present invention relates to a catalyst composition including a phosphorous-based ligand, and a hydroformylation method using the catalyst composition. More particularly, the present invention relates to a catalyst composition, which includes two different kinds of monocoordinated phosphine ligands and a transition metal catalyst, and a hydroformylation method using the catalyst composition. In accordance with the present invention, a catalyst composition lowering a selection ratio of normal aldehyde to iso aldehyde (n/i ratio), which are generated during hydroformylation of an olefinic compound, and exhibiting superior catalytic activity and stability, and a method of hydroformylating an olefinic compound using the catalyst composition are provided.

Catalyst composition containing phosphorous-based ligand and method for hydroformylation using same

The present disclosure relates to an apparatus for generating glycol and a method thereof. More particularly, the present disclosure relates to an apparatus for generating glycol including (a) an aldol reactor; (b) an extractor for extracting an aldol product, unsaturated aldehyde, using an organic solvent that is not mixed with water; (c) a distillation column for removing a raw material from a solution extract that is discharged from the extractor; (d) a hydrogenation reactor for hydrogenating a solution extract that is discharged from the distillation column; and (e) a divided-wall distillation column for isolating glycol from a hydrogenated solution product that is discharged from the hydrogenation reactor, wherein the hydrogenation reactor is a fixed-bed catalytic reactor that is filled with a copper-based catalyst, and a method of preparing the same. In accordance with the present disclosure, an economical apparatus for preparing glycol which reduces loss of a raw material and provides a high glycol yield while inhibiting generation of by-products, and a method of preparing the same are provided.

Apparatus for preparing glycol and method of preparing the same

Disclosed are a highly efficient neopentyl glycol preparation method and a device therefor. The method includes adding a hydroxypivaldehyde solution and hydrogen to a hydrogenation reactor that includes a hydrogenation catalyst. The hydroxypivaldehyde solution includes 6 to 30% by weight of hydroxypivaldehyde, 35 to 70% by weight of neopentyl glycol, 10 to 30% by weight of alcohol, and 10 to 30% by weight of water. The neopentyl glycol preparation method does not require separate heating in a section of a feed vessel to an inlet of a hydrogenation reactor unlike conventional technologies to save energy, and, at the same time, by-products with a high boiling point are not generated in the section to prevent poisoning of a hydrogenation catalyst in a reactor due to the by-products with a high boiling point and increase a hydrogenation yield, and a device therefor can be provided.

Highly efficient neopentyl glycol preparation method and device therefor

Disclosed are a catalyst composition containing a phosphorous-based ligand and a hydroformylation process using the same. More specifically, disclosed are a catalyst composition containing a monodentate phosphite ligand, a monodentate phosphine ligand and a transition metal catalyst, wherein the total content of the entire ligand including the monodentate phosphite ligand and the monodentate phosphine ligand is 1 to 33 moles, based on 1 mole of the transition metal catalyst, and a hydroformylation method using the same. The present invention has an effect of providing a catalyst composition which reduces an N/I (ratio of normal to iso) selectivity of aldehydes produced by hydroformylation of an olefin-based compound and exhibits superior catalytic activity and stability, and a hydroformylation method of an olefin-based compound using the catalyst composition.

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Daejeon, South Korea

Min Ji Choi