Hyundai Motor Company

Seoul National University

Lotte Chemical Corporation

Samhwa Capacitor Co., Ltd.

Jong Heop Yi

In Kyu Song

Pil Seung Kim

Ji Bong Joo

Jong Hyun Lee

Young Min Kim

Young Joo Oh

Jung Rag Yoon

In Chul Hwang

Ji Chul Jung

Young Jong Seo

Joong Won Lee

Hyung Ki Min

Eo Jin Lee

Yoon Jae Lee

Disclosed is a propylene direct oxidation reaction catalyst capable of preparing a propylene oxide from propylene and oxygen at a higher yield than catalysts prepared by conventional methods, by applying a specific transition metal oxide promoter in preparation of a catalyst containing silver, a transition metal oxide promoter and a carrier through a slurry process. The present invention provides a propylene direct oxidation reaction catalyst, which is a supported silver catalyst used for preparing a propylene oxide from the propylene direct oxidation reaction, the catalyst including a molybdenum oxide and a tungsten oxide as a catalyst promoter.

Propylene direct oxidation reaction catalyst, method for preparing same, and method for preparing propylene oxide through propylene direct oxidation reaction using same

Provided is a preparation method of a metal oxide doped monolith carbon aerogel for a high capacitance capacitor, the including: preparing a monolith carbon aerogel by performing a thermal decomposition of a moist gel dried in condition of a atmospheric pressure and a room temperature in a nitrogen atmosphere; impregnating the monolith carbon aerogel into alcohol where a metal precursor is dissolved; and calcinating the monolith carbon aerogel where the metal precursor is impregnated in an atmospheric atmosphere. By impregnating the metal oxide into the monolith carbon aerogel, a limit of capacitance may be enhanced using a pseudo capacitance effect by an interfacial oxidation reduction reaction.

Preparation method of metal oxide doped monolith carbon aerogel for capacitance capacitor

The present invention relates to a method for preparing a highly dispersed supported platinum catalyst, which comprises the step of adding a reducing agent to a mixture of a platinum precursor and a carbon support, wherein the reducing agent is prepared by mixing ethylene glycol and sodium borohydride.

Method for preparing highly dispersed supported platinum catalyst using complex reducing agent

The present invention relates to a method for synthesizing highly dispersed supported platinum catalyst. More particularly, the present invention relates to a method of synthesizing highly dispersed supported platinum catalyst comprising: dissolving a reducing agent in a solvent to produce a solution, dissolving a platinum chloride to the same solvent; adding a carbon support and platinum in a predetermined ratio to the above mixed solution, agitating the mixture, performing ultrasonic treatment, and performing heat treatment; and adding a HCl solution, agitating the mixture, separating the precipitates via filtration to produce a catalyst, and then washing the catalyst with distilled water, thereby obtaining an active highly dispersed supported platinum catalyst which has excellent electric charge activity, uniformly-sized platinum particles and relatively high specific surface area.

Method for preparation of highly dispersed supported platinum catalyst

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Seoul, South Korea

Jong Heop Yi