Abstract:
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.
Abstract:
Disclosed are a method of preparing conjugated diene and a device therefor. More particularly, disclosed a method of preparing conjugated diene, wherein generated gas including butadiene is cooled and then water discharged at a lower part is not directly treated as waste water and subjected to byproduct removal and steam-extraction to utilize converted steam, and an installation issue of an existing biological waste water disposal equipment due to an excessive amount of byproducts can be resolved, and a device therefor are disclosed.
Abstract:
Disclosed is an ester plasticizer composition, as a plasticizer composition, which comprises a hybrid alkyl-substituted terephthalate compound and a non-hybrid alkyl-substituted terephthalate compound as active ingredients, improves workability due to high absorption speed for the resins and short melting time, and thus may imparts a uniform foaming property upon being applied to wallpaper formulation.
Abstract:
Disclosed are a mesoporous composite oxide catalyst, a method for preparing the same and a method for synthesizing 1,3-butadidne using the same. The surface area is increased by introducing certain porous silica into preparation of a catalyst for synthesizing 1,3-butadiene, thereby improving a conversion ratio of normal-butene, and selectivity and yield of 1,3-butadiene, and providing economic efficiency from the viewpoint of decreasing an amount of used metal and reducing catalyst production cost.
Abstract:
Disclosed is a multi-component bismuth molybdate catalyst for production of butadiene which comprises bismuth, molybdenum and at least one metal having a monovalent, divalent or trivalent cation, and further comprises cesium and potassium and thus has advantages of improving conversion ratio, yield and selectivity of butadiene and of providing stability of process operation.
Abstract:
Disclosed are a catalyst composition and a method of hydroformylating olefin using the same, which may maintain catalyst activity through improvement of catalyst stability and reduce a use amount of a ligand while improving selectivity to iso-aldehyde, by using a specific ligand to a transition metal catalyst and a ligand stabilizer together in hydroformylation of olefin.
Abstract:
Disclosed is a plasticizer composition which comprises an ester-based plasticizer and an ether compound and exhibits improved workability and heat loss in proportion to content of the ether compound.
Abstract:
Disclosed are a method for preparing an ester plasticizer and an ester plasticizer prepared by the method. More specifically, disclosed are a method for preparing an ester plasticizer comprising trans-esterifying 100 parts by weight of dioctyl terephthalate with 0.1 to 89.9 parts by weight of butyl alcohol, and an ester plasticizer prepared by the method.Advantageously, provided are a novel method for preparing an ester plasticizer and an ester plasticizer with superior physical properties, prepared by the method.
Abstract:
An ester composition including terephthalate compounds substituted with a non-hybrid and non-branch type alkyl group, a hybrid and branch type alkyl group, and a non-hybrid and branch type alkyl group, respectively by 0.5 wt % to 9.5 wt %, by 14.5 wt % to 43.8 wt %, and 46.7 wt % to 85 wt % based on the total weight of the ester composition, a method of preparing the same, and a resin composition including the same are provided. The ester composition has a short absorption time with respect to the resin and short fusion time and improves the processability of the resin composition. In addition, good physical properties may be provided when manufacturing a sheet and a compound such as a cable, an interior of a car, a film, a sheet, a tube, a wallpaper, a toy, a flooring material, and the like.